ATOP EHG6510 Industrial Lite Managed Booster Switch User Manual
- June 3, 2024
- atop
Table of Contents
EHG6510 Industrial Lite Managed Booster Switch
Industrial Lite-Managed Booster Switch
User Manual
Atop Technologies, Inc.
Industrial Lite-Managed Booster Switch
User Manual
V1.1 October 27th, 2021
Series covered by this manual: EHG65XX * The user interface on these products
may be slightly different from the one shown on this user manual
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This PDF Document contains internal hyperlinks for ease of navigation. For
example, click on any item listed in the Table of Contents to go to that page.
Published by:
Atop Technologies, Inc. 2F, No. 146, Sec. 1, Tung-Hsing Rd, 30261 Chupei City,
Hsinchu County Taiwan, R.O.C. Tel: +886-3-550-8137 Fax: +886-3-550-8131
www.atoponline.com
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Important Announcement
The information contained in this document is the property of Atop
Technologies, Inc., and is supplied for the sole purpose of operation and
maintenance of Atop Technologies, Inc., products. No part of this publication
is to be used for any other purposes, and it is not to be reproduced, copied,
disclosed, transmitted, stored in a retrieval system, or translated into any
human or computer language, in any form, by any means, in whole or in part,
without the prior explicit written consent of Atop Technologies, Inc.,
Offenders will be held liable for damages and prosecution. All rights,
including rights created by patent grant or registration of a utility model or
design, are reserved.
Disclaimer
We have checked the contents of this manual for agreement with the hardware
and the software described. Since deviations cannot be precluded entirely, we
cannot guarantee full agreement. However, the data in this manual is reviewed
regularly and any necessary corrections will be included in subsequent
editions. Suggestions for improvement are welcome. All other product’s names
referenced herein are registered trademarks of their respective companies.
Preface
This manual contains some advanced network management knowledge, instructions,
examples, guidelines, and general theories. The contents are designed to help
users manage the switch and use its software, a background in general theory
is a must, when reading it. Please refer to the Glossary for technical terms
and abbreviations.
Who Should Use This User Manual
This manual is to be used by qualified network personnel or support
technicians who are familiar with network operations, and might be useful for
system programmers or network planners as well. This manual also provides
helpful and handy information for first time users. For any related problems,
please contact your local distributor. If they are unable to assist you,
please redirect your inquiries to www.atoponline.com .
Warranty Period
Atop technology provides a limited 5-year warranty for managed Ethernet
switches.
Documentation Control
Author: Revision: Revision History: Creation Date: Last Revision Date: Product Reference: Document Status:
Matteo Tabarelli 1.1 New features 21 February 2021 27 October 2021 Layer-2 Managed Switch Released
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Table of Contents
1 Introduction………………………………………………………………………………………………………. 7
1.1 Introduction to Industrial Managed Switch………………………………………………………………………………….
7 1.2 Software Features …………………………………………………………………………………………………………………. 8
2 Configuring with a Web Browser ………………………………………………………………………….. 9
2.1 Web-based Management Basics …………………………………………………………………………………………….. 9 2.1.1
Default Factory Settings …………………………………………………………………………………………………………. 9 2.1.2
Login Process and Main Window Interface ……………………………………………………………………………… 10
2.2 System Info ………………………………………………………………………………………………………………………… 14 2.2.1 System
Info ………………………………………………………………………………………………………………………… 14
2.3 Administration …………………………………………………………………………………………………………………….. 15 2.3.1
Account ……………………………………………………………………………………………………………………………… 15 2.3.2 IP
Setting……………………………………………………………………………………………………………………………. 16 2.3.3 Modbus
Setting …………………………………………………………………………………………………………………… 17 2.3.4 System Time
………………………………………………………………………………………………………………………. 24
2.4 Forwarding …………………………………………………………………………………………………………………………. 27 2.4.1 QoS
…………………………………………………………………………………………………………………………………… 27 2.4.2 Rate Control
……………………………………………………………………………………………………………………….. 30 2.4.3 Storm Control
……………………………………………………………………………………………………………………… 32
2.5 Port……………………………………………………………………………………………………………………………………. 34 2.5.1 Port
Setting ………………………………………………………………………………………………………………………… 34 2.5.2 Port Status
…………………………………………………………………………………………………………………………. 35
2.6 VLAN …………………………………………………………………………………………………………………………………. 36 2.6.1 VLAN
Setting………………………………………………………………………………………………………………………. 37 2.6.2 802.1Q VLAN
……………………………………………………………………………………………………………………… 37 2.6.3 Port-Based VLAN
………………………………………………………………………………………………………………… 40
2.7 Power over Ethernet…………………………………………………………………………………………………………….. 41 2.7.1
PoE Schedule Profile …………………………………………………………………………………………………………… 41 2.7.2 PoE
Schedule …………………………………………………………………………………………………………………….. 42 2.7.3 PoE Status
…………………………………………………………………………………………………………………………. 42
2.8 Trunking …………………………………………………………………………………………………………………………….. 44 2.8.1
Trunking Setting ………………………………………………………………………………………………………………….. 44
2.9 Spanning Tree…………………………………………………………………………………………………………………….. 46 2.9.1
Spanning Tree Setting………………………………………………………………………………………………………….. 46 2.9.2
Bridge Info………………………………………………………………………………………………………………………….. 48 2.9.3 Port
Setting ………………………………………………………………………………………………………………………… 49
2.10 System ………………………………………………………………………………………………………………………………. 52
2.10.1Backup/Restore…………………………………………………………………………………………………………………… 52
2.10.2Firmware Update…………………………………………………………………………………………………………………. 53
2.10.3Factory Default Setting…………………………………………………………………………………………………………. 53
2.10.4Reboot……………………………………………………………………………………………………………………………….. 53 2.10.5Logout
……………………………………………………………………………………………………………………………….. 53
3 Glossary …………………………………………………………………………………………………………. 55
4 Modbus Memory Map ………………………………………………………………………………………. 57
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Introduction
Table of Figures
Figure 2.1 IP Address for Web-based
Setting…………………………………………………………………………………………..10 Figure 2.2 Example of Google’s
Chrome web brower invalid certificate authority…………………………………………..10 Figure 2.3
A hyperlink to proceed to the managed switch at IP address
10.0.50.1…………………………………………11 Figure 2.4 Login page
…………………………………………………………………………………………………………………………..11 Figure 2.5 Login timeout
error notification………………………………………………………………………………………………..12 Figure 2.6 Example
of error notification on blocked account ………………………………………………………………………12 Figure
2.7 Notification on recording of unauthorized login
………………………………………………………………………….13 Figure 2.8 Default Web Interface
……………………………………………………………………………………………………………13 Figure 2.9 System Information
Dropdown Menu……………………………………………………………………………………….14 Figure 2.10 Details of
System Info Webpage under the System Info Mainmenu ……………………………………………14 Figure
2.11 Administration Dropdown Menu …………………………………………………………………………………………….15
Figure 2.12 Account Setting Webpage ……………………………………………………………………………………………………15
Figure 2.13 Notification of old password
………………………………………………………………………………………………….16 Figure 2.14 IP Setting under IP
Setting Webpage …………………………………………………………………………………….16 Figure 2.15 IP Interface
Part under IP Setting Webpage ……………………………………………………………………………17 Figure 2.16
Webpage for Setting the Modbus Address ……………………………………………………………………………..17
Figure 2.17 Mapping Table of Modbus Address for Switch’s IP
Address………………………………………………………18 Figure 2.18 Entering Connection Setup Menu of
the Modbus Poll……………………………………………………………….18 Figure 2.19 Modbus Poll Connection
Setup……………………………………………………………………………………………..19 Figure 2.20 Multiple Cell
Selection in Modbus Poll ……………………………………………………………………………………19 Figure 2.21 Set
Display Mode to Hex in Modbus Poll ………………………………………………………………………………..20 Figure
2.22 Modbus Poll Setup Read/Write Definition ……………………………………………………………………………….20
Figure 2.23 Slave ID in the Modbus Poll Function is set to 1
………………………………………………………………………21 Figure 2.24 Set Code 03 in the Modbus Poll
Function ……………………………………………………………………………….21 Figure 2.25 Setup Starting Address
and Quantity in Modbus Poll ……………………………………………………………….22 Figure 2.26 Modbus
Memory Address 81 and 82 are the location of EHG6510’s IP Address
………………………….22 Figure 2.27 Mapping Table of Modbus Address for Clearing Port
Statistics ………………………………………………….23 Figure 2.28 Port Count in Port Statistics
Webpage……………………………………………………………………………………23 Figure 2.29 Click on Function 06 in
the Modbus Poll …………………………………………………………………………………23 Figure 2.30 Use Modbus Poll
to Clear Switch’s Port Count ………………………………………………………………………..24 Figure 2.31
Cleared Port Statistics …………………………………………………………………………………………………………24 Figure 2.32
Webpage for Setting System Time when Daylight Saving Time and SNTP Functions
are disabled 25 Figure 2.33 Webpage for Setting System Time when Daylight
Saving Time and SNTP Functions are enabled 25 Figure 2.34 Forwarding Dropdown
Menu…………………………………………………………………………………………………27 Figure 2.35 QoS Dropdown Menu
………………………………………………………………………………………………………….27 Figure 2.36 QoS Setting Webpage
…………………………………………………………………………………………………………28 Figure 2.37 Mapping Table of CoS
Webpage …………………………………………………………………………………………..29 Figure 2.38 Mapping Table of
DSCP and ECN Webpage ………………………………………………………………………….30 Figure 2.39 Rate Control
Webpage ………………………………………………………………………………………………………..31 Figure 2.40 Storm Control
Webpage ………………………………………………………………………………………………………32 Figure 2.41 Port Dropdown
Menu …………………………………………………………………………………………………………..34 Figure 2.42 Port Setting
Webpage………………………………………………………………………………………………………….34 Figure 2.43 Port Status
Webpage…………………………………………………………………………………………………………..35 Figure 2.44 Example of
VLAN Configuration ……………………………………………………………………………………………36 Figure 2.45 VLAN
Dropdown Menu ………………………………………………………………………………………………………..36 Figure 2.46 VLAN
Setting Webpage ……………………………………………………………………………………………………….37 Figure 2.47 802.1Q
VLAN Dropdown Menu……………………………………………………………………………………………..38 Figure 2.48 802.1Q
VLAN’s Setting Webpage………………………………………………………………………………………….38 Figure 2.49 802.1Q
VLAN PVID Setting Webpage ……………………………………………………………………………………39 Figure 2.50
802.1Q VLAN Table Webpage………………………………………………………………………………………………40 Figure 2.51
Port-based VLAN Setting Webpage……………………………………………………………………………………….40 Figure
2.52 Power over Ethernet Dropdown Menu Example on EHG6510-4PoE-2SFP-
24V…………………………..41 Figure 2.53 PoE Schedule Webpage with Example on EHG6510
-4PoE-2SFP-24…………………………………………42 Figure 2.54 PoE Status
Webpage…………………………………………………………………………………………………………..43 Figure 2.55 Trunking
Dropdown Menu…………………………………………………………………………………………………….44 Figure 2.56 Trunking
Setting Webpage with Example on EHG6510-4PoE-2SFP-24V ……………………………………45
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Introduction
Figure 2.57 Spanning Tree Dropdown Menu ……………………………………………………………………………………………46
Figure 2.58 Spanning Tree Mode Setting
………………………………………………………………………………………………..47 Figure 2.59 Spanning Tree Main
Setting for RSTP……………………………………………………………………………………47 Figure 2.60 Spanning Tree
Per-port Setting for STP and RSTP………………………………………………………………….48 Figure 2.61
Bridge Information Webpage ………………………………………………………………………………………………..48 Figure
2.62 Spanning Tree Port Setting Webpage ……………………………………………………………………………………49
Figure 2.63 System Dropdown Menu………………………………………………………………………………………………………52
Figure 2.64 Backup/Restore Configuration via
HTTP………………………………………………………………………………..52 Figure 2.65 Firmware Update Webpage
………………………………………………………………………………………………….53 Figure 2.66 Factory Default Setting
Webpage ………………………………………………………………………………………….53 Figure 2.67 Reboot Webpage
………………………………………………………………………………………………………………..53 Figure 2.68 Logout
Webpage…………………………………………………………………………………………………………………54
Table of Tables
Table 2.1 Descriptions of the Basic information
……………………………………………………………………………………….14 Table 2.2 Descriptions of IP Settings
………………………………………………………………………………………………………17 Table 2.3 Descriptions of the System
Time and the SNTP ………………………………………………………………………….25 Table 2.4 Descriptions of
QoS Setting …………………………………………………………………………………………………….27 Table 2.5 Priority queue
descriptions………………………………………………………………………………………………………29 Table 2.6 Descriptions
of Rate Control Setting …………………………………………………………………………………………31 Table 2.7
Descriptions of Storm Control ………………………………………………………………………………………………….32 Table
2.8 Descriptions of Limiting Parameters………………………………………………………………………………………….33
Table 2.9 Descriptions of Port
Settings……………………………………………………………………………………………………34 Table 2.10 Description of
VLAN Setting…………………………………………………………………………………………………..37 Table 2.11 Setting
Descriptions of 802.1Q VLAN Settings …………………………………………………………………………38 Table 2.12
Setting Descriptions of 802.1Q VLAN PVID ……………………………………………………………………………..39
Table 2.13 Descriptions of 802.1Q VLAN Table
……………………………………………………………………………………….40 Table 2.14 Default value of PoE Schedule
Profile …………………………………………………………………………………….41 Table 2.15 Descriptions of PoE
Status ……………………………………………………………………………………………………43 Table 2.16 Descriptions of
Trunking Settings……………………………………………………………………………………………45 Table 2.17 Descriptions
of Spanning Tree Parameters ……………………………………………………………………………..47 Table 2.18
Bridge Root Information ………………………………………………………………………………………………………..48 Table 2.19
Bridge Topology Information ………………………………………………………………………………………………….49 Table
2.20 Descriptions of Spanning Tree Port Setting
……………………………………………………………………………..49 Table 2.21 Default Path Cost for RSTP
…………………………………………………………………………………………………..51
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Industrial Lite-Managed Booster Switch
1 Introduction
User Manual
Introduction
1.1 Introduction to Industrial Managed Switch
Atop’s EHG (Ethernet Switching Hub Full Gigabit) 65XX series are product lines
of powerful industrial lite-managed booster switch which are referred to as
Open Systems Interconnection (OSI) Layer 2 bridging devices. Unlike an
“unmanaged” switch, which is normally found in homes or in Small Office/Home
Office (SOHO) environments and runs in “auto-negotiation” mode, each port on a
“managed switch” can be configured for its link bandwidth, priority, security,
and duplex settings. The managed switches can be managed by Simple Network
Management Protocol (SNMP) software, or web browsers. Since every single port
can be configured to specific settings, network administrators can better
control the network and maximize network functionality.
Atop’s managed switch is also an industrial switch and not a commercial
switch. A commercial switch simply works in a comfortable office environment.
However, an industrial switch is designed to perform in harsh industrial
environments, i.e., extreme temperature, high humidity, dusty air, potential
high impact, or the presence of potentially high static charges. Atop’s
managed switch works fine even in these environments.
Atop’s managed switch is designed to provide faster, secure, and more stable
network. One advantage that makes it a powerful switch is that it supports
network redundancy protocols/technologies such as iA-Ring, and Rapid Spanning
Tree Protocol (RSTP). These protocols provide better network reliability and
decrease recovery time down to less than 20 ms.
Atop’s managed switch supports a wide range of IEEE standard protocols. This
switch is excellent for keeping systems running smoothly, reliable for
preventing system damage or losses, and friendly to all levels of users. The
goal of this innovative product is to bring users an enhanced network
management experience.
Note: Throughout the manual, the symbol * indicates that more detailed
information of the subject will be provided at the end of this book or as a
footnote.
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Introduction
1.2 Software Features
Atop’s industrial lite-managed booster switches come with a wide range of
network protocols and software features. These protocols and software features
allow the network administrator to implement security and reliability into
their network. These features enable Atop’s switches to be used in safety
applications, and factory and process automation. The followings are the list
of protocols and software features.
· User Interfaces o Web browser
· Dynamic Host Configuration Protocol (DHCP) Client · Time Synchronization
o Network Time Protocol (NTP) Client o Simplified Network Time Protocol (SNTP)
· Quality of Service (QoS) Traffic Regulation · Rapid Spanning Tree Protocol
(RSTP) · Virtual Local Area Network (VLAN) · Power over Ehternet (PoE) ·
Trunking · Alarm System (with Relay Output) · Industrial Protocols o
Modbus/TCP
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Configuring with a Web Browser
2 Configuring with a Web Browser
Chapter 2 explains how to access the industrial managed switch for the first
time. The web brower is the easiest way to configure this Ethernet Switch. The
web browser allows users to access the switch over the Internet or the
Ethernet LAN. Telnet and Command Line Interface (CLI) are not supported by
EHG65xx. Users are recommended to use the web browser method to configure the
system because of its user-friendly interface.
2.1 Web-based Management Basics
Users can access the managed switch easily using their web browsers (Internet
Explorer 8 or 11, Firefox 44, Chrome 48 or later versions are recommended). We
will proceed to use a web browser to introduce the managed switch’s functions.
2.1.1 Default Factory Settings Below is a list of default factory settings.
This information will be used during the login process. Make sure that the
computer accessing the switch has an IP address in the same subnet and the
subnet mask is the same. Please pay attention that the username and the
password are case sensitive.
IP Address: 10.0.50.1 Subnet Mask: 255.255.0.0 Default Gateway: 0.0.0.0 User
Name: admin Password: default
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Configuring with a Web Browser
2.1.2 Login Process and Main Window Interface
Before users can access the configuration, they have to log in. This can
simply be done in the following steps.
1. Launch a web browser. 2. Type in the switch IP address (e.g.
http://10.0.50.1), as shown in Figure 2.1).
Note: When the username and the password are left empty, the login prompt will
not show.
Figure 2.1 IP Address for Web-based Setting
3. If it is the first time that the users access the managed switch, the web
browser such as Google Chrome may detect that the switch does not have a valid
certificate authority. The users can proceed by clicking on the Advanced
button as shown in Figure 2.2.
Figure 2.2 Example of Google’s Chrome web brower invalid certificate authority
4. Once the Advanced button is clicked, an explanation text will appear below
the button as shown in
Figure 2.3. Here at the bottom of the web page, there is a hyperlink that the
users can click to access the web GUI of the managed switch.
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Configuring with a Web Browser
Figure 2.3 A hyperlink to proceed to the managed switch at IP address
10.0.50.1 5. After preceeding through the invalid certificate warning and
clicking on the Proceed to 10.0.50.1
(unsafe) hyperlink, a login page will be presented shown in Figure 2.4. The
user can enter a Username and a Password to access the managed switch. Then,
clicking on the Login button.
Figure 2.4 Login page 6. For security purpose, if the user did not enter the
username and the password within 30 seconds, the
login page will time-out and an error notification page will show up. Even
though the user entered the correct username and password, the login procedure
will not succeed if the login was done more than 30 seconds after the login
page was first accessed. The notification page is shown in Figure 2.5. The
user can click on the Try again button to access the login page again.
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Configuring with a Web Browser
Figure 2.5 Login timeout error notification 7. If the user entered wrong
passwords more than three times within 3 minutes, the account will be
temporary blocked for 15 minutes. An error pop-up notification will be shown
as in Figure 2.6. The user can click Try again button to access the login page
again after the duration of 15 minutes.
Figure 2.6 Example of error notification on blocked account Note: 1. Any
unauthorized login to the managed switch will be recorded to device’s syslog.
A pop-up notification is
shown in Figure 2.7. 2. After the user logins to the main interface if the
user is idle or inactive for more than 5 minutes, the user will
be logged out automatically.
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Configuring with a Web Browser
Figure 2.7 Notification on recording of unauthorized login
After the login process, the main interface will show up, as shown in Figure
2.8. The main menu (left side of the screen) provides the links at the top
level links of the menu hierarchy and by clicking each item allows lower level
links to be displayed. Note that in this case the Port 1 is highlighted in
green, indicating that the port is being connected. Detailed explanations of
each subsection will be addressed later as necessary.
Figure 2.8 Default Web Interface Page 13 of 63
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Configuring with a Web Browser
2.2 System Info
To help users become familiar with the device, the System Info section
provides important details of the switch. This is also the main welcome screen
once the user has logged in. The details make it easier to identify different
switches connected to the network. The System Info section is only categorized
into one subsection as shown in the left panel of Figure 2.9.
Figure 2.9 System Information Dropdown Menu
2.2.1 System Info
The only subsection, i.e., System Info, provides basic system information of
Atop’s industrial managed switch. The user can check the model name, device
description, IP address, MAC address, Application version, Kernel version, and
image build information. Figure 2.10 depicts an example of Basic System
Information of EHG6510-8PoE-2SFPD-24V. Table 2.1 summarizes the description of
each basic information.
Figure 2.10 Details of System Info Webpage under the System Info Mainmenu
Label
Model name Device Description IP address MAC address Application Version
Kernel Version Image Build Info.
Table 2.1 Descriptions of the Basic information
Description
The device’s complete model name The model type of the device An IP address of
the device The MAC address of the device The current application version of
the device. The current kernel version of the device. Information about the
firmware image such as date of creation
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Configuring with a Web Browser
2.3 Administration
In this section, users will be able to configure Account, IP Settings, Modbus
Setting, and System Time. Figure 2.11 shows the Administration menu with the
list of its sub-menus on the left of the screen.
Figure 2.11 Administration Dropdown Menu 2.3.1 Account As shown in Figure
2.12, there are two sections inside Administration->Account page as the
followings: Account list and Change password. In Account List box (1st row of
Figure 2.12), the users and their access rights are listed. There is only one
type of access right: admin. The admin’s access right has read/write
permission on the managed switch. If the user wishes to change password of the
administrator (admin account), the user can do so in the Change password box
(2nd row of Figure 2.12). Here, the user has to select admin account from the
Username dropdown box first. Then, input a password that the user would like
to change it to in New password textbox before reentering the same password in
the Confirm password textbox. Note that the users will be reminded during the
login procedure with a notification to change their passwords if the passwords
have not been changed over the last 30 days. Figure 2.13 shows the pop-up
notification for changing the password.
Figure 2.12 Account Setting Webpage
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Configuring with a Web Browser
Figure 2.13 Notification of old password
2.3.2 IP Setting
This subsection is divided into two parts: IP Setting and Current IP address
information. In this subsection, the user may modify network settings of
Internet Protocol version 4 (IPv4) for the managed switch, e.g. Static IP
Address, Subnet Mask, Gateway, Primary DNS (domain name server), and Secondary
DNS. As shown in Figure 2.14, the user can choose to enable DHCP (Dynamic Host
Configuration Protocol) by checking the box behind it. That is the IP address
and related information can be automatically obtained from a DHCP server in
the local network thus reducing the work for an administrator. By disabling
this function (DHCP’s box is unchecked), the user has an option to setup the
static IP address and related fields manually.
Figure 2.14 IP Setting under IP Setting Webpage Please click on the Update
button to update the IP configuration on the switch. A system reboot is
required after each update, so the new network settings can take effect. The
caution message is shown in red color accordingly. To launch the web
configuration again, the user will need to manually update the new IP address
in the URL field of the web browser if the IP address of the managed switch is
changed. The second part of IP Setting section is the Current IP address
information part as shown in Figure 2.15. In this part, the current IP address
information of the managed switch is listed. The description of each field and
its default value are summarized in Table 2.2.
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Configuring with a Web Browser
Label DHCP
Static IP Address
Subnet Mask Gateway Primary DNS Secondary DNS
Figure 2.15 IP Interface Part under IP Setting Webpage
Table 2.2 Descriptions of IP Settings
Description By checking this box, an IP address and related fields will be
automatically assigned. Otherwise, users can set up the static IP address and
related fields manually. Display current IP address. Users can also set a new
static IP address for the device. Display current Subnet Mask or set a new
subnet mask. Show current Gateway or set a new one. Set the primary DNS IP
address to be used by your network. Set the secondary DNS IP address. The
Ethernet switch will locate the secondary DNS server if it fails to connect to
the Primary DNS Server.
Factory Default Uncheck
10.0.50.1
255.255.0.0 10.0.50.254 255.255.255.255 255.255.255.255
2.3.3 Modbus Setting
Atop’s managed switch can be connected to a Modbus network using Modbus TCP/IP
protocol which is an industrial network protocol for controlling automation
equipment. The managed switch’s status and settings can be read and written
through Modbus TCP/IP protocol which operates similar to a Management
Information Base (MIB) browser. The managed switch will be a Modbus slave
which can be remotely configured by a Modbus master. The Modbus slave address
must be set to match the setting inside the Modbus master. In order to access
the managed switch, a Modbus Address must be assigned as described in this
subsection. A Modbus memory mapping table, which lists all the register’s
addresses inside the managed switch and their descriptions, is provide in
Chapter 4 Modbus Memory Map. Figure 2.16 shows the Modbus Setting webpage.
Figure 2.16 Webpage for Setting the Modbus Address Figure 2.16 shows the
webpage that users can set up the Modbus ID address. Users can use Modbus
TCP/IP compatible applications such as Modbus Poll to configure the switch.
Note that Modbus Poll can be download from
http://www.modbustools.com/download.html. The Modbus Poll 64-bit version
7.0.0, Build 1027 was used in this document. However, Atop does not provide
this software to the users. Tutorial of Modbus read and write examples are
illustrated below. Note that the switch only supports Modbus function code 03,
04 (for Read) and 06 (for Write).
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Read Registers (This example shows how to read the switch’s IP address)
Configuring with a Web Browser
Figure 2.17 Mapping Table of Modbus Address for Switch’s IP Address
1. Make sure that a supervising computer (Modbus Master) is connected to your
target switch (Modbus Slave) over the Ethernet network.
2. Launch Modbus Poll in the supervising computer. Note a registration key
may be required for a long term use of Modbus Poll after 30-days evaluation
period. Additionally, there is a 10-minute trial limitation for the connection
to the managed switch.
3. Click Connect button on the top toolbar to enter Connection Setup dialog
by selecting Connect… menu as shown in Figure 2.18.
Figure 2.18 Entering Connection Setup Menu of the Modbus Poll 4. Select Modbus
TCP/IP as the Connection mode and enter the switch’s IP address inside the
Remote
Modbus Server’s IP Address or Node Name field at the bottom as shown in Figure
2.19. The Port number should be set to 502. Then click OK button.
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Configuring with a Web Browser
Figure 2.19 Modbus Poll Connection Setup 5. On the window Mbpoll1, select
multiple cells from row 0 to row 2 by clicking on cells in second column of
row 0 and row 2 while holding the shift key as shown in Figure 2.20.
Figure 2.20 Multiple Cell Selection in Modbus Poll 6. Set Display mode of the
selected cells in previous step to HEX (hexadecimal) by selecting Display
pull-
down menu and choosing the Hex as shown in Figure 2.21.
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Figure 2.21 Set Display Mode to Hex in Modbus Poll 7. Click on the Setup pull-
down menu and choose Read/Write Definition… as shown in Figure 2.22.
Figure 2.22 Modbus Poll Setup Read/Write Definition 8. Enter the Slave ID in
the Modbus Poll function as shown in Figure 2.23, which should match the
Modbus
Address = 1 entered in Figure 2.16 in Section 0 (Modbus Setting).
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Figure 2.23 Slave ID in the Modbus Poll Function is set to 1 9. Select
Function 03 or 04 because the managed switch supports function code 03 and 04
as shown in
Figure 2.24.
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10. Set starting Address to 81 and Quantity to 2 as shown in Figure 2.25.
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Figure 2.25 Setup Starting Address and Quantity in Modbus Poll 11. Click OK
button to read the IP address of the switch.
Figure 2.26 Modbus Memory Address 81 and 82 are the location of EHG6510’s IP
Address 12. Modbus Poll will get the values 0x0A, 0x00, 0x32, 0x01, which
means that the switch’s IP is 10.0.50.1 as
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Write Registers (This example shows how to clear the switch’s Port Count (Statistics).)
Figure 2.27 Mapping Table of Modbus Address for Clearing Port Statistics
1. Check the switch’s Port TX/RX counts in Port Status page (described in
Section 2.5.2) as shown in Figure 2.28.
Figure 2.28 Port Count in Port Statistics Webpage 2. Click function 06 on the toolbar as shown in Figure 2.29.
Figure 2.29 Click on Function 06 in the Modbus Poll 3. Set Address to 256 and
Value (HEX) to 1 as shown in Figure 2.30, then click “Send” button.
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Figure 2.30 Use Modbus Poll to Clear Switch’s Port Count 4. Check Port Status
(described in Section 2.5.2) in the managed switch’s Web UI as shown in Figure
2.31.
The packet count is now cleared.
Figure 2.31 Cleared Port Statistics 2.3.4 System Time Atop’s industrial
managed switch has internal calendar (date) and clock (or system time) which
can be set manually or automatically. Figure 2.32 and Figure 2.33 shows the
System Time and SNTP webpage. The users have options to configure Current Date
and Current Time manually. If the switch is deployed in a region where
daylight saving time is practiced (see note below for explanation), please
check the Enable option for Daylight Saving Time. Then, the users will have to
enter the Start Date, End Date, and Offset in hour(s) as shown in Figure 2.33.
There is a dropdown list of Time Zone which can be selected for the local time
zone.
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Figure 2.32 Webpage for Setting System Time when Daylight Saving Time and SNTP Functions are disabled
Figure 2.33 Webpage for Setting System Time when Daylight Saving Time and SNTP
Functions are enabled
For automatically date and time setting, the users can enable Simple Network
Time Protocol (SNTP) by checking the Enable SNTP option (see note below for
explanation). Then, the users must enter the NTP Server 1 and NTP Server 2
which will be used as the reference servers to synchronize date and time to.
The users can specify the Time Server Query Period for synchronization which
is in the order of seconds. The value for this period will depend on how much
clock accuracy the users want the switch to be. Description of each option is
provided in Table 2.3.
Table 2.3 Descriptions of the System Time and the SNTP
Label Current Date Current Time
Description
Allows local date configuration in yyyy/mm/dd format Allows local time
configuration in local 24-hour format
Factory Default 2017/1/1
12:30:30
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Label Daylight Saving Start Date End Date Offset
Enable SNTP
NTP Server 1 NTP Server 2
Time Server Query Period
Time Zone
Description
Factory Default
Enable or disable Daylight Saving Time function Define the start date of
daylight saving in mm/dd/hr format
Define the end date of daylight saving in mm/dd/hr format Decide how many
hours to be shifted forward/backward when daylight saving time begins and
ends. See note below. Enables SNTP function. This option will enable network
time protocol (NTP) daemon inside the managed switch which allows other
devices in the network to synchronize their clock with this managed switch
using NTP. Sets the first IP or Domain address of NTP Server.
Sets the second IP or Domain address of NTP Server. Switch will locate the 2nd
NTP Server if the 1st NTP Server fails to connect. This parameter determines
how frequently the time is updated from the NTP server. If the end devices
require less accuracy, longer query time is more suitable since it will cause
less load to the switch. The setting value can be in between 60 and 259200 (72
hours) seconds.
The user’s current local time
Unchecked Jan/1/0 Jan/1/0 0 Unchecked
time.nist.gov time-A.timefreq.bldrdoc.gov 259,200 seconds
(GMT+08:00) Taipei
Note:
– Daylight Saving Time: In certain regions (e.g. US), local time is adjusted
during the summer season in order to provide an extra hour of daylight in the
afternoon, and one hour is usually shifted forward or backward.
– SNTP: Simple Network Time Protocol is used to synchronize the computer
systems’ clocks with a standard NTP server. Examples of two NTP servers are
time.nist.gov and time-A.timefreq.bldrdoc.gov.
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2.4 Forwarding
There are many network technologies for forwarding packets over network. In
this industrial managed switch, three main technologies are implemented: QoS,
rate control, and storm control. Figure 2.34 depicts the submenus under the
Forwarding section.
Figure 2.34 Forwarding Dropdown Menu
2.4.1 QoS
Quality of Service (QoS) is the ability to provide different priority to
different applications, users, or data flows. QoS guarantees a certain level
of performance to a data flow by using the following metrics: transmitted bit
rate, bit error rate, delay, jitter, and probability of packet dropping. QoS
guarantees are important if the network capacity is insufficient, especially
for application that requires certain bit rate and is delay sensitive. For any
network that is best effort, QoS cannot be guaranteed, except that resource is
more than sufficient to serve users.
Controlling network traffic needs a set of rules to help classify different
types of traffic and define how each of them should be treated as they are
being transmitted. This managed switch can inspect both 802.1p Class of
Service (CoS) tags and DiffServ tags called Differentiated Services Code Point
(DSCP) to provide consistent classification.
In the QoS section, three QoS mechanisms are included: queuing methods or
packet scheduling disciplines in Setting section, CoS Queuing Mapping section,
and DSCP Mapping section, as shown in Figure 2.35. Table 2.4 summarizes the
descriptions of QoS Setting. See notes in the following subsection for more
details.
Label
Setting
Header Mapping
Figure 2.35 QoS Dropdown Menu
Table 2.4 Descriptions of QoS Setting Description
Queuing Methods (packet scheduling disciplines) includes Strict Priority and
Weighted Round-Robin. The detailed descriptions and comparison are given in
the following subsection. CoS Queuing Mapping and DSCP Mapping For 802.1p CoS
only, switch only checks Layer 2 (L2) 802.1p CoS priority bits. For DiffServ,
switch checks DiffServ Code Point (DSCP). See notes below for a detailed
description.
Factory Default
Strict Priority
802.1p CoS only
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2.4.1.1 QoS Setting
Two types of queuing methods are configurable in this managed switch: Strict
Priority and Weighted Round-Robin.
In Strict Priority, the QoS scheduler allows the highest priority queue to
preempt other queues as long as there are still packets waiting to be
transmitted in the highest priority queue. This mode guarantees that traffic
in the highest queue is always transmitted first. Only if the high priority
queues are empty, the lower priority queues can be transmitted. Queue 0 (Q0)
to Queue 7 (Q7) are ranked from the lowest priority queue to the highest
priority queue. Therefore, packets in Q7 will be all transmitted first before
packets in Q6, and packets in Q6 will all be sent first before packets in Q5,
and so on in this order.
Weighted Round Robin (WRR) is the simplest approximation of generalized
processor sharing (GPS). In WRR, each packet flow or connection has its own
packet queue in a network interface controller. It ensures that all service
classes have access to at least some configured amount of network bandwidth to
avoid bandwidth starvation. But WRR has a limitation, as it is unfair with
variable length packets. It only provides the correct percentage of bandwidth
to each service class only if all of the packets in all the queues are the
same size or when the mean packet size is known in advance. Usually, a weight
of each queue is set proportion to requested bit rate. Each queue is served
proportionally to its weight for a service cycle. Figure 2.36 depicts the QoS
Setting webpage.
By default, the QoS in the managed switch works under the Strict Priority
mode. For Weighted Round Robin, packet weights of Q0 to Q7 are set in term of
packet as followings.
– COS Q0 = 2 packets – COS Q1 = 1 packet – COS Q2 = 3 packets – COS Q3 = 6
packets – COS Q4 = 2 packets – COS Q5 = 17 packets – COS Q6 = 25 packets – COS
Q7 = 33 packets
Figure 2.36 QoS Setting Webpage
At the bottom of the QoS Setting webpage in Figure 2.36, the users can select
the packet classification scheme that will be used by the managed switch.
There are two classification types to choose from the drop-down list: 802.1p
CoS only or Both 802.1p CoS and DiffServ. The default classification type is
802.1p CoS only. Note that after changing the schedule discipline, setting the
desired weights if any for the WRR , or selecting the classification type,
please click on the Update button to enable them on the switch.
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2.4.1.2 CoS Queue Mapping
802.1p CoS is the QoS technique developed by the IEEE P802.1p working group,
known as Class of Service (CoS) mechanism at Media Access Control (MAC) level.
It is a 3-bit field called the priority code point (PCP) within an Ethernet
frame header (Layer 2) when using VLAN tagged frames as defined by IEEE
802.1Q. It specifies a priority value between 0 and 7 that can be used by QoS
to differentiate traffic. When this option is enabled, the switch inspects the
802.1p CoS tag in the MAC frame to determine the priority of each frame.
The switch can classify traffic based on a valid 802.1p (CoS – Class of
Service) priority tag. These options allow users to map Priority Code Point
(PC) within an Ethernet frame header to different CoS priority queues as shown
in Figure 2.37. The user can choose the desired CoS Priority Queue from the
drop-down list from Q1 to Q7 for each PCP value. Descriptions of priority
queue in CoS Queue Mapping page are summarized in Table 2.5.
Figure 2.37 Mapping Table of CoS Webpage
Label PCP
CoS Priority Queue
Table 2.5 Priority queue descriptions
Description Priority Code Point within the Ethernet frame header. PCP 0 is the
lowest priority and 7 is the highest priority.
The priority queue that a specific Ethernet frame needs to be assigned into.
Factory Default
PCP 0 -> Q0 PCP 1 -> Q1 PCP 2 -> Q2 PCP 3 -> Q3 PCP 4 -> Q4 PCP 5 -> Q5 PCP 6
-> Q6 PCP 7 -> Q7
2.4.1.3 DSCP Mapping
DiffServ/ToS stands for Differentiated Services/Type of Services. It is a
networking architecture that specifies a simple but scalable mechanism for
classifying network traffic and providing QoS guarantees on networks. DiffServ
uses a 6-bit Differentiated Service Code Point (DSCP) in the 8-bit
differentiated services field (DS field) in the IP header for packet
classification purposes. The DS field and ECN field replace the outdated IPv4
TOS field in IPv4 to make per-hop behavior decisions about packet
classification and traffic conditioning functions, such as metering, marking,
shaping, and policing.
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The RFCs (Request for Comments) do not dictate the way to implement Per-Hop
Behaviors (PHBs). Atop implements queuing techniques that can base their PHB
on the IP precedence or DSCP value in the IP header of a packet. Based on DSCP
or IP precedence, traffic can be put into a particular service class. Packets
within a service class are treated the same way.
DiffServ allows compatibility with legacy routers, which only supports IP
Precedence, since it uses the DiffServ Code Point (DSCP), which is the
combination of IP precedence and Type of Service fields.
TOS (Type of Service) of the switch can be configured with the default queue
weights as shown in Figure 2.38. Note that the TOS consists of DSCP
(Differentiated Service Code Point (6 bits)) and ECN (Explicit Congestion
Notification (2 bits)). The users can assign TOS values (DSCP) to predefined
queue types (Priority) manually using DSCP Mapping web page in Figure 2.38.
The priority number can be between 0 to 7 where the number 7 is the highest
priority and 0 is the lowest priority. After assigning any new priority to a
DSCP, please click the Update button at the bottom of the page to allow the
new mapping to take effect.
Figure 2.38 Mapping Table of DSCP and ECN Webpage
2.4.2 Rate Control The users have options to set the Rate Control for each
port on the managed switch as shown in Figure 2.39. The rate control mechanism
will set a limit or maximum data rate which the port can transmit. Moreover,
the rate control can be imposed on both directions: the incoming traffic
(Ingress) and the outgoing traffic (Egress). However, there are some
restrictions on the values that can be set on these two rate control
parameters. Here is the summary of the rules for Rate Control settings:
· The outgoing (Egress) and incoming (Ingress) values have to be set between 0
and 1,000,000. · The value 0 is set to turn off the rate control mechanism. ·
The values have to be integer and multiple of 64 when the transmission rate is
less than 1,000 Kbps. For
example: 64 Kbps, 128 Kbps, and 512 Kbps. · The values have to be integer and
multiple of 1,000 when the transmission rate is between 1,000 Kbps and
100,000 Kbps. Ex: 1,000 Kbps, 3,000 Kbps… 100,000 Kbps. · The values have to
be integer and multiple of 10,000 Kbps when transmission rate is greater than
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Figure 2.39 Rate Control Webpage
Table 2.6 provides descriptions of rate control setting. Note that after configuring the rate control in each port, please click on the Update button to enable it on the switch.
Label Port
Rate Control (Kbps)
Ingress Egress
Table 2.6 Descriptions of Rate Control Setting Description
Port number on the managed switch. Sets limits on its transmission rates for
the incoming (Ingress) traffic. Note that the unit is in kilo-bits per second
(Kbps). Sets limits on its transmission rates for the outgoing (Egress)
traffic. Note that the unit is in kilo-bits per second (Kbps).
Factory Default –
0 (Disabled)
0 (Disabled)
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2.4.3 Storm Control
This subsection provides the storm control or storm filter features of the
managed switch. Storm control prevents traffic on a LAN from being disrupted
by ingress traffic of broadcast, multicast, and destination lookup failure
(DLF) on a port. Figure 2.40 depicts the Storm Control webpage. The users can
impose the same limiting parameters on all ports at the same time by clicking
on the box in front of all line and set the storm control data rate under each
limiting column (DLF, Multicast, Broadcast). The storm control limiting can
also be independently control on each port. Note that the limiting value of 0
means that the storm control is disable and the value must be in multiples of
64kbps. Additional ingress storm traffic will be dropped after the limit has
reached.
Figure 2.40 Storm Control Webpage Table 2.7 summarizes the descriptions of storm control.
Table 2.8 summarizes the descriptions of limiting parameters for storm control.
Label
Table 2.7 Descriptions of Storm Control Description
Enable or Disable the storm control or filter on all ports
at the same time. The limiting data rate for each type of
All
storm packets (DLF, Multicast, and Broadcast) can be
controlled by changing the number under each column.
Note that the value must be in multiples of 64kbps.
Port1 – Port10
Set the limiting data rate of storm packets that can be controlled for each Port, which are DLF, Multicast, and Broadcast. Note that the value must be in multiples of 64kbps. See notes below for the detailed description and comparison.
Factory Default Uncheck and Disable
Disable
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Table 2.8 Descriptions of Limiting Parameters
Label
Description
DLF limiting (Destination Lookup
DLF limiting (0~9876480) Kb
Failure)
Multicast limiting
Multicast limiting (0~9876480) Kb
Broadcast limiting
Broadcast limiting (0~9876480)
Kb
Factory Default 0 (Disable)
0 (Disable) 0 (Disable)
Type of Storm Packets:
– DLF: Destination Lookup Failure. The switch will always look for a
destination MAC address in its MAC Table first. In case that a MAC address
cannot be found in the Table, which means DLF occurs, the switch will forward
the packets to all ports that are in the same LAN.
– Multicast: This type of transmission sends messages from one host to
multiple hosts. Only those hosts that belong to a specific multicast group
will receive it. Network devices that support multicast send only one copy of
the information across the network until the delivery path that reaches group
members diverges. At these diverging points, multicast packets will be copied
and forwarded. This method helps reducing high traffic volumes due to large
number of destinations, using network bandwidth efficiently.
– Broadcast: Messages are sent to all devices in the network.
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2.5 Port
Atop’s industrial managed switch provides full control on all of its network
interfaces. In this section, the users can enable or disable each port and set
preferred physical layer mode such as copper or fiber and configure data rate
(speed) for each port. All port’s status can also be viewed in this section.
Figure 2.41 illustrates the Port webpage. The Port section is subdivided into
five subsections which are: Setting and Port Status.
Figure 2.41 Port Dropdown Menu
2.5.1 Port Setting
Setting webpage is shown in Figure 2.42. The users can control the state of
each port by checking on the corresponding Enable box. The possible physical
layer connections of each port are listed on the Mode column. On the next
column, the transmission Speed of each Fiber port can be chosen from the
dropdown list which could be 100, or 1000 Mbps where the default speed is set
to the highest possible rate in Mbps. The speed for each Copper is set at 1000
Mbps. After configuring the port setting, please click on the Update button to
enable any of your new configuration on the switch.
Figure 2.42 Port Setting Webpage Descriptions of port setting options are summarized in Table 2.9.
Label Port Enable
Mode
Table 2.9 Descriptions of Port Settings
Description
Port number on the managed switch. Check the box to allow data to be
transmitted and received through this port Copper and/or Fiber modes. When
both Copper and Fiber are listed, it means that this is a Combo port
Factory Default
All ports are enabled Depend
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2.5.2 Port Status
The overview of port status on the managed switch can be viewed in this
webpage. The users can compare the actual status and the configured options
described in previous subsection for each port. Figure 2.43 shows the Port
Status webpage. To check the latest status of all port, click the Refresh
button either on the top or the bottom of the webpage.
Figure 2.43 Port Status Webpage The header in each column and its possible
values of the ports’s status are listed here: Mode (Copper (C) or Fiber (F))
Enable (Yes or No) Link (Up or Down) Speed: Config or Actual (unit: Mbps)
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2.6 VLAN
A Virtual Local Area Network (VLAN) is a group of devices that can be located
anywhere on a network, but all devices in the group are logically connected
together. In other words, VLAN allows end stations to be grouped together even
if they are not located on the same network switch. With a traditional
network, users usually spend a lot of time on devices relocations, but a VLAN
reconfiguration can be performed entirely through software. Also, VLAN
provides extra security because devices within a VLAN group can only
communicate with other devices in the same group. For the same reason, VLAN
can help to control network traffic. Traditional network broadcasts data to
all devices, no matter whether they need it or not. By allowing a member to
receive data only from other members in the same VLAN group, VLAN avoids
broadcasting and increases traffic efficiency (see Figure 2.44).
Figure 2.44 Example of VLAN Configuration
Atop’s managed switch EHG65XX series provide two approaches to create VLAN as
follows: Tagging-based (802.1Q) VLAN Port-based VLAN
Figure 2.45 shows the drop-down menu under the VLAN section.
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Figure 2.45 VLAN Dropdown Menu
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2.6.1 VLAN Setting
The first menu under the VLAN section is the VLAN Setting. Here the management
VLAN Identification number (ID) is configured based on the IEEE 802.1Q
standard. The default value is VID = 1. Note that the ID can be the number
from 1 to 4094. If the users change the management VLAN ID to other number,
please click the Update button to set it on the managed switch. Figure 2.46
depicts the VLAN Setting webpage. Table 2.10 describes the VLAN Setting
option.
Figure 2.46 VLAN Setting Webpage
Label Management VLAN ID
Table 2.10 Description of VLAN Setting Description
Configure the management VLAN ID that can be accessed this switch. Range from
1 to 4094.
Factory Default 1
2.6.2 802.1Q VLAN
Tagging-based (802.1Q) VLAN is the networking standard that supports virtual
LAN (VLANs) on an Ethernet network. The standard defines a system of VLAN
tagging for Ethernet frames and the accompanying procedures for bridges and
switches in handling such frames. The standard also contains provisions for a
quality-of-service prioritization scheme commonly known as IEEE 802.1Q.
VLAN tagging frames are frames with 802.1Q (VLAN) tags that specify a valid
VLAN identifier (VID). Whereas, untagged frames are frames without tags or
frames that carry 802.1p (prioritization) tags and only having prioritization
information and a VID of 0. When a switch receives a tagged frame, it extracts
the VID and forwards the frame to other ports in the same VLAN.
For a 802.1Q VLAN packet, it adds a tag (32-bit field) to the original packet.
The tag is between the source MAC address and the EtherType/length fields of
the original frame. For the tag, the first 16 bits is the Tag protocol
identifier (TPID) field which set to a value of 0x8100 in order to identify
the frame as an IEEE 802.1Q-tagged frame. This field is located at the same
position as the EtherType/length field in untagged frames, and is thus used to
distinguish the frame from untagged frames. The next 3 bits is the Tag control
information (TCI) field which refers to the IEEE 802.1p class of service and
maps to the frame priority level. The next one bit is the Drop Eligible
Indicator (DEI) field which may be used separately or in conjunction with PCP
to indicate frames eligible to be dropped in the presence of congestion. The
last 12 bits is the VLAN identifier (VID) field specifying the VLAN to which
the frame belongs.
Under the 802.1Q VLAN menu, there are three submenus which are Setting, PVID
Setting, and VLAN Table as shown in Figure 2.47.
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Figure 2.47 802.1Q VLAN Dropdown Menu
2.6.2.1 802.1Q VLAN Settings
Figure 2.48 shows the 802.1Q VLAN Setting webpage which allow the users to add
new tagged-based VLAN to the managed switch. Please perform the following
procedure to set up the 802.1Q VLAN on the switch.
1. Go to 802.1Q VLAN, then select Setting submenu. 2. Fill in appropriate
Name, VID, Member Ports, and Tagged Ports as show in Figure 2.48. The
description of
each fields is summarized in Table 2.11. Then, click Add/Modify button. Note
to select multiple Member Ports or multiple Tagged Ports, press and hold the
shift/Ctrl key while selecting multiple ports. 3. Go to 802.1Q VLAN’s PVID
Setting described in the next subsection. 4. Choose the same ports, and enter
PVID (which is the same as VID), see Figure 2.48.
To remove any of the VLAN from the 802.1Q VLAN setting, click the Remove
button at the end of that particular VLAN record as shown in Figure 2.48.
Figure 2.48 802.1Q VLAN’s Setting Webpage
Label Name VID
Member Ports Tagged Ports
Table 2.11 Setting Descriptions of 802.1Q VLAN Settings
Description
The VLAN ID name that can be assigned by the user. Configure the VLAN ID that
will be added in static VLAN table in the switch. The VLAN ID is in the range
2~4094. Configure the port to this specific VID. Configure the port that
outgoing packet is tagged or untagged. Selected: The outgoing packet is tagged
from this port. Unselected: The outgoing packet is untagged from this port.
Factory Default Factory Default Dependent
All ports Dependent
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*NOTE: Default settings only have VLAN ID on 1. To set VLAN ID to other value beside 1, users will have to assign ports to be in that VLAN group.
2.6.2.2 802.1Q VLAN PVID Settings
Each port is assigned a native VLAN number called the Port VLAN ID (PVID).
When an untagged frame goes through a port, the frame is assigned to the
port’s PVID. That is the frame will be tagged with the configured VLAN ID
defined in this subsection. Figure 2.49 shows the PVID Setting for 802.1Q VLAN
where the upper table lists the current PVID assigned to each port. The users
can configure the PVID by select either on or multiple ports (by clicking and
holding the Ctrl key) and enter the desired PVID value between 2 to 4094.
Please click Update button to allow the configuration to take effect on the
switch. Table 2.12 summarizes the PVID Setting’s descriptions.
Figure 2.49 802.1Q VLAN PVID Setting Webpage
Label Port PVID
Table 2.12 Setting Descriptions of 802.1Q VLAN PVID Description Select specific port(s) to set the PVID value Configure the default 802.1Q VID tag assigned to specific Port. The VLAN ID is in the range 1~4094.
Factory Default 1
2.6.2.3 802.1Q VLAN Table
This webpage shown in Figure 2.50 displays the 802.1Q VLAN table which lists
all the VLANs that are automatically and manually added/modified to the
managed switch. Table 2.13 summarizes the descriptions of VLAN Table.
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Label
VID
Static Member Ports
Static Tagged Ports
Figure 2.50 802.1Q VLAN Table Webpage Table 2.13 Descriptions of 802.1Q VLAN
Table Description
Indicate the VLAN ID number
Indicate the member ports to this VID. This entry is created by user.
Indicate the ports that outgoing packet is tagged or untagged. Displayed: The
outgoing packet is tagged from this port. Non-displayed: The outgoing packet
is untagged from this port. This entry is created by user.
Factory Default Dependent All ports
Dependent
2.6.3 Port-Based VLAN
Port-Based VLAN (or Static VLAN equivalent) assignments are created by
assigning ports to a VLAN. If a device is connected to a certain port, the
device will be assigned a VLAN to that specific port. If a user changes the
connected port, a new port-VLAN assignment must be reconfigured for this new
connection. If you want to allow communication between two subscriber ports,
you must define the egress port for both ports. To setup port-based VLAN,
please follow the following steps:
1. Click on Port-Based VLAN setting page as shown in Figure 2.51. 2. Select
specific ports to be included in certain group by checking the corresponding
box under the Member ports
on particular row of port-based VLANs’ Port ID. Note that if the users check
the box under the Port ID column, all of the Member Ports will belong to that
VLAN’s Port ID. 3. Click on the Update button to allow the setting to take
effect on the managed switch.
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Figure 2.51 Port-based VLAN Setting Webpage
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2.7 Power over Ethernet
Power over Ethernet (PoE) is an optional function for the managed switches
which enables the switch to provide power supply to end devices called Powered
Device (PD) connected on the other side of the Ethernet ports. This means that
the electrical power is delivered along with data over the Ethernet cables.
This will be useful for the end devices that are located in the area that has
no power supply and the users can save additional wiring for the end devices.
To find out whether this function is supported or not by your managed switch,
please look for the keyword “PoE” in Atop’s model name. If the switch has
“PoE” in its model name, it means that the switch is a Power Sourcing
Equipment (PSE) that can provide power output to a Powered Device (PD). Figure
2.52 shows the Power over Ethernet dropdown menu.
Figure 2.52 Power over Ethernet Dropdown Menu Example on EHG6510-4PoE-2SFP-24V
2.7.1 PoE Schedule Profile
Power over Ethernet schedule is a feature which allows users to set flexible
schedule for each PoE port to save power when devices are not in use. The
users can set Enable status and member ports of every profile in PoE Schedule
Profile page as shown in Figure 2.52. Each port can only belong to one PoE
profile. If users want all ports in the same PoE setting, enable the “Select
All Port” checkbox will add all port to profile 1. Disable the “Select All
Port” checkbox will remove all port from profile 1. A port can provide power
supply to end devices only if it belongs to a PoE schedule profile which is
enabled, and the time is selected. The users can select the time they want to
supply power for ports in PoE schedule page. Please also click on the Update
button to save the setting of PoE schedule profile on the switch.
The default PoE Schedule Profile setting is all ports belong to profile 1, and
only profile 1 is enable as shown in Table 2.14. The number of profiles and
ports depends on the EHG model of the user’s managed switch.
Label Profile1 Profile 2 Profile 3 Profile 4
Table 2.14 Default value of PoE Schedule Profile
Enable status
Port1
Port2
Port3
Enable
Enable
Enable
Enable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Port4 Enable Disable Disable Disable
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2.7.2 PoE Schedule
PoE Schedule page, as shown in Figure 2.53, will show Enable or Disable status
and ports of every profile set in PoE Schedule Profile page. The users can
select different PoE schedule profiles by PoE Profile select list and can also
select the time they want to supply power for ports in this PoE schedule
profile. If user wants to supply power for ports at any time, select a PoE
schedule profile and enable the “Select All Time” checkbox will make all time
checkbox checked. Disable the “Select All Time” checkbox will make all time
checkbox unchecked. A port can provide power output to devices only if it
belongs to a PoE schedule profile which is enabled, and the time is selected.
The PoE status of ports might change every hour according to its PoE schedule
profile. Please also click on the Update button to allow the setting on PoE
taking effect on the switch. The default PoE Schedule setting is enable all
time of profile 1 but disable all time of other profiles.
Figure 2.53 PoE Schedule Webpage with Example on EHG6510-4PoE-2SFP-24 2.7.3
PoE Status This webpage summarizes the status of each PoE port as shown in
Figure 2.54. For instance, Port4 can be enabled and can supply power to a
Class 4 Powered Device (PD) indicated under the Classification column. The
total power
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consumption for a PD might be 15dW. To check the latest status of the PoE port, please click on the Refresh button. Table 2.15 provides descriptions of each column in the table of PoE Status.
Label Port Enable Status Power Status
Classification Power (dW)
Table 2.15 Descriptions of PoE Status
Description Port number Enable or Disable PoE function On when there is a
power device on the other end or Off when there is no PD on the other end.
Display the classification of power device on the other end Display the power
supplied to this port in deciWatt
Factory Default –
Enable –
–
Figure 2.54 PoE Status Webpage
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2.8 Trunking
The managed switch supports Link Trunking, which allows one or more links to
be combined together as a group of links to form a single logical link with
larger capacity. The advantage of this function is that it gives the users
more flexibility while setting up network connections. The bandwidth of a
logical link can be doubled or tripled. In addition, if one of links in the
group is disconnected, the remaining trunked ports can share the traffic
within the trunk group. This function creates redundancy for the links, which
also implies a higher reliability for network communication. Figure 2.55 shows
the Trunking dropdown menu.
Figure 2.55 Trunking Dropdown Menu 2.8.1 Trunking Setting In this subsection,
the user can create new trunking assignment(s) and remove existing trunking
assignment(s). Figure 2.56 illustrates the Trunking Setting webpage. The top
part of the page called Trunking Status lists existing trunk(s) which can be
removed by pressing the Remove button in the last column. Each line of the
trunking provides information about the group of links (Trunk) based on Group
ID labeled with Trkx where x is the integer number from 1 to 5. The managed
switch can support up to 5 trunk groups. Note that for the difference media
types (for
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example Fast Ethernet, Gigabit Ethernet and Fiber), port trunking needs to be combined separately. There is a section called Available Port for creating trunking as shown in the lower part of the webpage.
Figure 2.56 Trunking Setting Webpage with Example on EHG6510-4PoE-2SFP-24V
Descriptions of trunking settings are summarized in Table 2.16.
Label
Table 2.16 Descriptions of Trunking Settings Description
Group ID
Up to 5 trunk groups can be created: Trk1~Trk5. Note that it is not possible to mix Fast Ethernet ports and Gigabit Ethernet ports into the same trunk group.
Ports
Specify the member ports for this trunking group. Please hold Ctrl (control) key to select more than one port at a time.
Apply
Click Apply button to confirm the changes.
Remove
Click this button to remove any existing trunking group.
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2.9 Spanning Tree
IEEE 802.1D Standard spanning tree functionality is supported by Atop’s
managed switches. The Spanning Tree Protocol (STP) provides a function to
prevent switching loops and broadcast radiation at the OSI layer 2. A
switching loop occurs in a network when there are multiple connections or
redundant paths between two network switches or at least two ports are
connected on both sides of the two network switches. The switching loop can
create a broadcast radiation, which is the accumulation of broadcast and
multicast traffics in a computer network. As broadcast and multicast messages
are forwarded by bridges/switches to every port, the bridges/switches will
repeatedly rebroadcast the broadcast messages, and this accumulation of
traffic can flood the network. STP creates a spanning tree topology and
disables those links of the network that are not part of the spanning tree,
which leaves only a single active path between two nodes. This function can
avoid flooding and increase network efficiency. Therefore, Atop’s managed
switches deploy spanning tree as a tool when the users set up connection or
port redundancy or fault-tolerance in their network.
RSTP (Rapid Spanning Tree Protocol), IEEE 802.1W then superseded by IEEE
802.1D-2004, is also supported in ATOP’s managed switches. It is an evolution
of the STP, but it is still backwards compatible with standard STP. RSTP has
the advantage over the STP. When there is a topology change such as link
failure in the network, the RSTP will converge significantly faster to a new
spanning tree topology. RSTP improves convergence on point-topoint links by
reducing the Max-Age time to 3 times Hello interval, removing the STP
listening state, and exchanging a handshake between two switches to quickly
transition the port to forwarding state.
This section describes how to setup the spanning tree protocol (STP), rapid
spanning tree protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP).
Figure 2.57 depicts the dropdown menu for Spanning Tree.
Figure 2.57 Spanning Tree Dropdown Menu 2.9.1 Spanning Tree Setting The users
can select the spanning tree mode which are based on different spanning tree
protocols in this webpage. Figure 2.58 shows the mode setting for spanning
tree. There are one spanning tree modes to choose from the dropdown menu,
which is rapid spanning tree protocol (RSTP). After choosing the desired mode,
please click Update button to allow the change to take effect.
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Figure 2.58 Spanning Tree Mode Setting
Under the mode setting, there is a box for Main Setting of spanning tree’s
parameters as showed in Figure 2.59. The users can enable or disable spanning
tree protocol in the Main Setting by checking the box behind the Enabled
option. The users can fine tune the Priority, Maximum Age, Hello Time, and
Forward Delay. Additonally, the BPDU Guard option can also be enabled by
checking the box behind the BPDU Guard Enabled. Note that the Bridge Protocol
Data Unit (BPDU) guard feature can be enabled to protect spanning tree
protocol (RSTP) topology from BPDU related attacks. After configuring the
spanning tree’s main parameters, please click Update button to allow the
change to take effect. The description of each parameter is listed in Table
2.17.
Figure 2.59 Spanning Tree Main Setting for RSTP
Label Enabled Priority
Maximum Age
Hello Time
Forward Delay
BPDU Guard Enabled
Table 2.17 Descriptions of Spanning Tree Parameters
Description Check the box to enable spanning tree functionality. Enter a
number to set the device priority. The value is in between 0 and 61440. The
lower number gives higher priority. Maximum expected arrival time for a hello
message. It should be longer than Hello Time. Hello time interval is given in
seconds. The value is in between 1 to 10. Specify the time spent in the
listening and learning states in seconds. The value is in between 4 to 30.
Check the box to enable BPDU (Bridge Protocol Data Unit) guard
Default Factory Disable 32768
20
2
15
Disable
The bottom part of the Spanning Tree Setting is the Per-port setting as shown in Figure 2.60. The users can enable spanning tree functionality individually on each port or on all port by checking on the box under the Port Enable column. The default setting is checking on all port. After making any change on the per-port setting, please click on the Update button to update the change on the managed switch.
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Figure 2.60 Spanning Tree Per-port Setting for STP and RSTP
2.9.2 Bridge Info Bridge Info (information) provides the statistical value of
spanning tree protocol as shown in Figure 2.61. The information is further
divided into two parts: Root Information and Topology Information. To check
the latest information, please click on the Refresh button. Table 2.18 and
Table 2.19 summarize the descriptions of each entry in the root information
table and topology information table, respectively.
Label
I am the Root
Root MAC Address Root Priority
Figure 2.61 Bridge Information Webpage
Table 2.18 Bridge Root Information Description
Indicator that this switch is elected as the root switch of the spanning tree
topology MAC address of the root of the spanning tree Root’s priority value:
The switch with highest priority has the lowest priority value and it will be
elected as the root of the spanning tree.
Factory Default
–
0
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Label
Root Path Cost Root Maximum Age
Root Hello Time Root Forward Delay
Description
Roo’s path cost is calculated from the switch’s port data rate. Root’s maximum
age is the maximum amount of time that the switch will maintain protocol
information received on a link. Root’s hello time which is the time interval
for RSTP to send out a hello message to the neighboring nodes to detect any
change in the topology. Root’s forward delay is the duration that the switch
will be in learning and listening states before a link begins forwarding.
Factory Default
0 0
0
0
Label
Root Port
Num. of Topology Change Last TC time ago
Table 2.19 Bridge Topology Information Description
A forwarding port that is the best port from non-root bridge/switch to root
bridge/switch. Note that for a root switch there is no root port. The total
number of spanning topology change over time.
The duration of time since last spanning topology change.
Factory Default
–
0
–
2.9.3 Port Setting
Spanning Tree Port Setting shows the configured value of spanning tree
protocol for each port, as shown in Figure 2.62. The configured information
for each port is state, role, path cost, path priority, link type, edge, cost,
and designated information. To check the latest update on the statistics,
please click on the Refresh button. Table 2.20 summarizes the descriptions of
spanning three port setting. If Spanning Tree is enabled, the table below will
become editable. Use the Update button to save the settings.
Label Port State
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Figure 2.62 Spanning Tree Port Setting Webpage
Table 2.20 Descriptions of Spanning Tree Port Setting Description
The name of the switch port State of the port: Disc’: Discarding – No user data is sent over the port.Lrn’: Learning – The port is not forwarding
frames yet, but it is populating its MAC Address Table. `Fwd’: Forwarding –
The port is fully operational.
Factory Default
N/A
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Role
Path Cost Pri
Config Actual
Config
Link Type
P2P?
Edge
Config Edge?
BPDU Guard
Designated
Cost P. Pri. (Port Priority) Port Bri. Pri. (Bridge Priority) Bridge MAC
Non-STP or STP RSTP bridge port roles: Root’ – A forwarding port that is the best port from non-root bridge to root bridge.Designated’ – A forwarding
port for every LAN segment. Alternate’ – An alternate path to the root bridge. This path is different from using the root port.Backup’ – A
backup/redundant path to a segment whose another bridge port already connects.
`Disabled’ – Note strictly part of STP, a network administrator can manually
disable a port. Setting the path cost for each switch port Setting path cost
(default: 0, meaning that using the system default value (depending on link
speed)) The actual value path cost (For STP and RSTP, please see Note 1 below
and Table 2.21.) Setting the port priority, used in the Port ID field of BPDU
packet, value = 16 × N, (N:0~15) See Note 2 below. The connection between two
or more switches (for RSTP) Setting of the Link Type P2P: A port that operates
in full-duplex mode is assumed to be point-to-point link. Non-P2P: A half-
duplex port (through a hub) Auto: Detect link type automatically Yes: This
port is a Point-to-Point (P2P). No: This port is not Point-to-Point (Non-P2P).
Edge port is a port which no other STP/RSTP switch connect to (for RSTP). An
edge port can be set to forwarding state directly. Edge functional is set: Yes
or No Yes: This port is an edge port. No: This port is not an edge port. BPDU
Guard is set: Yes or No This shows some information of the best BPDU packet
through this port. Root path cost Port priority (high 4 bits of the Port ID),
Value = 16 × N, (N: 0~15)
Interface number (lower 12 bits of the Port ID) Bridge priority, (value = 4096
× N, (N: 0~15)
The MAC address of the switch which sent this BPDU
NonSTP
0 0 128
Auto
No
No No No 0 128 32768 –
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Note:
1. In general, the path cost is dependent on the link speed. Table 2.21 lists
the default values of path cost for RSTP.
Data Rate
4 Mbits/s 10 Mbits/s 16 Mbits/s 100 Mbits/s 1 Gbits/s 2 Gbits/s 10 Gbits/s
Table 2.21 Default Path Cost for RSTP RSTP Cost (802.1W-2004)
5,000,000 2,000,000 1,250,000 200,000
20,000 10,000 2,000
2. The sequence of events to determine the best received BPDU (which is the
best path to the root).
· Lowest root bridge ID determines the root bridge. · Lowest cost to the root
bridge favors the upstream switch with the least cost to root. · Lowest sender
bridge ID serves as a tie breaker if multiple upstream switches have equal
cost to root. · Lowest sender port ID serves as a tie breaker if a switch has
multiple (non-Ether channel) links to a single
upstream switch. Bridge ID = priority (4 bits) + locally assigned system ID
extension (12 bits) + ID [MAC Address] 48 bits The default bridge priority is
32768. Port ID = priority (4 bits) + ID (Interface number) (12 bits) The
default port priority is 128.
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2.10 System
This last section on the WebUI interface of the EHG65XX managed switch allows
the administration to perform device maintenance operations such as backing up
and restoring device’s configuration, updating the firmware, reversing the
device to factory default setting, or reboot the system/device. Figure 2.63
shows all the dropdown menus under the System section.
Figure 2.63 System Dropdown Menu 2.10.1 Backup/Restore Figure 2.64 shows the
Backup/Restore webpage for backing up or restoring the configuration via HTTP.
It is divided into two parts: “Backup the Configuration” and “Restore the
Configuration”. When clicking the Download button on “Backup the
Configuration” part, user will be downloading file IP-{current ip}.bin. To
restore a configuration file to the switch, go to “Restore the Configuration”
part and click “Browse” button to choose a configuration file from the local
drive. Then, select one of the two options from the checkbox on the lower part
before clicking the “Upload” button. These two options are “Keep the current
username and password setting” and “Keep the current network setting”. This
will allow user to log in with the previously stored username, password,
and/or network configuration once the configuration is restored.
Figure 2.64 Backup/Restore Configuration via HTTP
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2.10.2 Firmware Update
The users can update the device firmware via web interface as shown in Figure
2.65. To update the firmware, the users can download a new firmware from
Atop’s website and save it in a local computer. Then, the users can click
Browse… button and choose the firmware file that is already downloaded. The
switch’s firmware typically has a “.dld” extension such as EHG6510-8POE-
2S.dld. After that, the users can click Update button and wait for the update
process to be done.
Note: please make sure that the switch is plug-in all the time during the
firmware upgrade.
Figure 2.65 Firmware Update Webpage
2.10.3 Factory Default Setting When the managed switch is not working
properly, the users can reset it back to the original factory default settings
by clicking on the Reset button as shown in Figure 2.66.
Figure 2.66 Factory Default Setting Webpage 2.10.4 Reboot An easy reboot
function is provided in this webpage requiring only one single click on the
Reboot button as shown in Figure 2.67.
Figure 2.67 Reboot Webpage
2.10.5 Logout An easy logout function is provided in this webpage requiring
only one single click on the Logout button as shown in Figure 2.68.
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Figure 2.68 Logout Webpage
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Glossary
3 Glossary
Term 802.1 802.1p 802.1x Broadcast Client DES
DHCP
DNS
EAP Ethernet
Gateway IEEE IGMP IP
IPv4
LAN MAC
Description
A working group of IEEE standards dealing with Local Area Network.
Provide mechanism for implementing Quality of Service (QoS) at the Media
Access Control Level (MAC).
IEEE standard for port-based Network-Access Control. It provides an
authentication mechanism to devices wishing to attach to a LAN or WLAN.
Broadcast packets to all stations of a local network.
Device that uses services provided by other participants in the network.
Data Encryption Standard is a block cipher that uses shared secret encryption.
It’s based on a symmetric-key algorithm that uses a 56-bit key.
Dynamic Host Configuration Protocol allows a computer to be configured
automatically, eliminating the need for intervention by a network
administrator. It also prevents two computers from being configured with the
same IP address automatically. There are two versions of DHCP; one for IPv4
and one for IPv6.
Domain Name System is a hierarchical naming system built for any computers or
resources connected to the Internet. It maps domain names into the numerical
identifiers. For example, the domain name www.google.com is translated into
the address 74.125.153.104.
Extensible Authentication Protocol is an authentication framework widely used
by IEEE.
In star-formed physical transport medium, all stations can send data
simultaneously. Collisions are detected and corrected through network
protocols.
Provide access to other network components on the OSI layer model. Packets
which are not going to a local partner are sent to the gateway. The gateway
takes care of communication with the remote network.
Institute of Electrical and Electronics Engineers
Internet Group Management Protocol is used on IPv4 networks for establishing
multicast group memberships.
Internet Protocol
Internet Protocol version 4 is the fourth revision of the Internet Protocol.
Together with IPv6, it is the core of internet network. It uses 32-bit
addresses, which means there are only 2^32 possible unique addresses. Because
of this limitation, an IPv4 addresses became scarce resource. This has
stimulated the development of IPv6.
Local Area Network is the network that connects devices in a limited
geographical area such as company or computer lab.
Media Access Control is a sub-layer of the Data Link Layer specified in the
OSI model. It provides addressing and channel access control mechanisms to
allow network nodes to communicate within a LAN.
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Glossary
MAC Address MD5
Multicast
OSI Model QoS RADIUS Server SMTP SNMP
A unique identifier assigned to network interfaces for communications on a
network segment. It is formed according to the rules of numbering name space
managed by IEEE.
Message-Digest algorithm 5 is a widely used cryptographic which has a function
with a 128-bit hash value.
This type of transmission sends messages from one host to multiple hosts. Only
those hosts that belong to a specific multicast group will receive the
multicast. Also, networks that support multicast send only one copy of the
information across the network until the delivery path that reaches group
members diverges. At these diverges points, multicast packets will be copied
and forwarded. This method can manage high volume of traffic with different
destinations while using network bandwidth efficiently.
Open System Interconnection mode is a way of sub-dividing a communication
system into smaller parts called layers. A layer is a collection of
conceptually similar functions that provide services to the layer above it and
receives services from the layer below it.
Quality of Service
Remote Authentication Dial In User Service is an authentication and monitoring
protocol on the application level for authentication, integrity protection and
accounting for network access.
Devices that provide services over the network.
Simple Mail Transfer Protocol (SMTP) is an internet standard for email
transmission across IP network.
Simple Network Management Protocol is a protocol for managing devices on IP
networks. It exposes management data in the form of variables on the managed
systems, which describe the system configuration.
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Modbus Memory Map
4 Modbus Memory Map
1. Read Registers (Support Function Code 3, 4). 2. Write Register (Support Function Code 6). 3. 1 Word = 2 Bytes.
Address
0x0000 (0)
0x0020 (32) 0x0021 (33) 0x0024 (36) 0x0030 (48)
Data Type
32 words 1 word 3 words
Read/Write
Description
System Information
System Description = “Managed Switch EHG6510″
Word 0 Hi byte = ‘M’
Word 0 Lo byte = ‘a’
Word 1 Hi byte = ‘n’
Word 1 Lo byte = ‘a’
Word 2 Hi byte = ‘g’
Word 2 Lo byte = ‘e’
Word 3 Hi byte = ‘d’
Word 3 Lo byte = ‘ ‘
Word 4 Hi byte = ‘S’
Word 4 Lo byte = ‘w’
R
Word 5 Hi byte = ‘i’
Word 5 Lo byte = ‘t’
Word 6 Hi byte = ‘c’
Word 6 Lo byte = ‘h’
Word 7 Hi byte = ‘ ‘
Word 7 Lo byte = ‘E’
Word 8 Hi byte = ‘H’
Word 8 Lo byte = ‘6’
Word 9 Hi byte = ‘5’
Word 9 Lo byte = ‘1’
Word 10 Hi byte = ‘0’
Word 10 Lo byte = ”
Firmware Version =
R
Ex: Version = 1.02 Word 0 Hi byte = 0x01
Word 0 Lo byte = 0x02
Ethernet MAC Address
Ex: MAC = 00-01-02-03-04-05
Word 0 Hi byte = 0x00
R
Word 0 Lo byte = 0x01 Word 1 Hi byte = 0x02
Word 1 Lo byte = 0x03
Word 2 Hi byte = 0x04
Word 2 Lo byte = 0x05
1 word
R
Kernel Version Ex: Version = 1.03 Word 0 Hi byte = 0x01 Word 0 Lo byte = 0x03
1 word
Console Information
Baud Rate
R
0x0000: 4800
0x0001: 9600
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0x0031 (49)
1 word
0x0032 (50)
1 word
0x0033 (51) 0x0034 (52)
1 word 1 word
0x0040 (64)
1 word
0x0050 (80)
1 word
0x0051 (81)
2 words
0x0053 (83)
2 words
0x0055 (85)
2 words
0x0057 (87)
2 words
0x0059 (89)
2 words
0x0002: 14400
0x0003: 19200
0x0004: 28800
0x0005: 38400
0x0006: 57600
0x0007: 144000
0x0008: 115200
Data Bits
R
0x0007: 7
0x0008: 8
Parity
R
0x0000: None 0x0001: Odd
0x0002: Even
Stop Bit
R
0x0001: 1
0x0002: 2
R
Flow Control 0x0000: None
Power Information
Power Status
Power 1 OK, Hi byte = 0x01
R
Power 1 Fail, Hi byte = 0x00
Power 2 OK, Low byte = 0x01
Power 2 Fail, Low byte = 0x00
IP Information
DHCP Status
R
0x0000: Disabled
0x0001: Enabled
IP Address of switch
Ex: IP = 192.168.1.1
R
Word 0 Hi byte = 0xC0 Word 0 Lo byte = 0xA8
Word 1 Hi byte = 0x01
Word 1 Lo byte = 0x01
Subnet Mask of switch
Ex: IP = 255.255.255.0
R
Word 0 Hi byte = 0xFF Word 0 Lo byte = 0xFF
Word 1 Hi byte = 0xFF
Word 1 Lo byte = 0x00
Gateway Address of switch
Ex: IP = 192.168.1.254
R
Word 0 Hi byte = 0xC0 Word 0 Lo byte = 0xA8
Word 1 Hi byte = 0x01
Word 1 Lo byte = 0xFE
DNS1 of switch
Ex: IP = 168.95.1.1
R
Word 0 Hi byte = 0xA8 Word 0 Lo byte = 0x5F
Word 1 Hi byte = 0x01
Word 1 Lo byte = 0x01
R
DNS2 of switch
Ex: IP = 168.95.1.1
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0x0100 (256) 0x0101 (257) 0x0102 (258) 0x0200 (512) 0x0300 (768) 0x0400 (1024)
0x0500 (1280) 0x0600 (1536)
0x1000 (4096)
0x1020 (4128)
0x1040 (4160)
Word 0 Hi byte = 0xA8 Word 0 Lo byte = 0x5F Word 1 Hi byte = 0x01 Word 1 Lo byte = 0x01
System Status Clear
1 word
W
1 word
W
1 word
W
Clear Port Statistics 0x0001: Do clear action Clear Relay Alarm 0x0001: Do clear action Clear All Warning Events 0x0001: Do clear action
Warning Events Information
64 words
R
1st Warning Event Information
64 words
R
2st Warning Event Information
64 words
R
3st Warning Event Information
64 words
R
64 words
R
4st Warning Event Information 5st Warning Event Information
Port Status
5 words
R
5 words
R
5 words
R
Port Status
0x0000: Disabled 0x0001: Enabled Word 0 Hi byte = Port 1 Status Word 0 Lo byte
= Port 2 Status Word 1 Hi byte = Port 3 Status Word 1 Lo byte = Port 4 Status
Word 2 Hi byte = Port 5 Status Word 2 Lo byte = Port 6 Status Word 3 Hi byte =
Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi byte = Port 9 Status
Word 4 Lo byte = Port 10 Status
Port Negotiation
Status, force = 0x00 Status, auto = 0x01 Word 0 Hi byte = Port 1 Status Word 0
Lo byte = Port 2 Status Word 1 Hi byte = Port 3 Status Word 1 Lo byte = Port 4
Status Word 2 Hi byte = Port 5 Status Word 2 Lo byte = Port 6 Status Word 3 Hi
byte = Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi byte = Port 9
Status Word 4 Lo byte = Port 10 Status
Port Speed
Status, 10M = 0x01 Status, 100M = 0x02 Status, 1000M = 0x03 Word 0 Hi byte =
Port 1 Status Word 0 Lo byte = Port 2 Status Word 1 Hi byte = Port 3 Status
Word 1 Lo byte = Port 4 Status Word 2 Hi byte = Port 5 Status Word 2 Lo byte =
Port 6 Status
Modbus Memory Map
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0x1060 (4192) 5 words
R
0x1080 (4224) 5 words
R
0x10A0 (4256) 5 words
R
0x1200 (4608) 20 words
R
User Manual
Modbus Memory Map
Word 3 Hi byte = Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi byte =
Port 9 Status Word 4 Lo byte = Port 10 Status
Port Duplex
Status, half-duplex = 0x00 Status, full-duplex = 0x01 Word 0 Hi byte = Port 1
Status Word 0 Lo byte = Port 2 Status Word 1 Hi byte = Port 3 Status Word 1 Lo
byte = Port 4 Status Word 2 Hi byte = Port 5 Status Word 2 Lo byte = Port 6
Status Word 3 Hi byte = Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi
byte = Port 9 Status Word 4 Lo byte = Port 10 Status
Port Flow Control
Status, disabled = 0x00 Status, enabled = 0x01 Word 0 Hi byte = Port 1 Status
Word 0 Lo byte = Port 2 Status Word 1 Hi byte = Port 3 Status Word 1 Lo byte =
Port 4 Status Word 2 Hi byte = Port 5 Status Word 2 Lo byte = Port 6 Status
Word 3 Hi byte = Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi byte =
Port 9 Status Word 4 Lo byte = Port 10 Status
Port Link Status
Status, down = 0x00 Status, up = 0x01 Word 0 Hi byte = Port 1 Status Word 0 Lo
byte = Port 2 Status Word 1 Hi byte = Port 3 Status Word 1 Lo byte = Port 4
Status Word 2 Hi byte = Port 5 Status Word 2 Lo byte = Port 6 Status Word 3 Hi
byte = Port 7 Status Word 3 Lo byte = Port 8 Status Word 4 Hi byte = Port 9
Status Word 4 Lo byte = Port 10 Status
Port TX rate
Ex. Port 1 runs at TX Rate(1024 Kbps = 0x400). Word 0 of Port 1 = 0x0000 Word
1 of Port 1 = 0x0400 Word 0,1 = Port 1 TX Rate Word 2,3 = Port 2 TX Rate Word
4,5 = Port 3 TX Rate Word 6,7 = Port 4 TX Rate Word 8,9 = Port 5 TX Rate Word
10,11 = Port 6 TX Rate Word 12,13 = Port 7 TX Rate Word 14,15 = Port 8 TX Rate
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Industrial Lite-Managed Booster Switch
0x1280 (4736) 20 words
R
0x1300 (4864) 40 words
R
0x1400 (5120) 40 words
R
0x1500 (5376) 40 words
R
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User Manual
Modbus Memory Map
Word 16,17 = Port 9 TX Rate Word 18,19 = Port 10 TX Rate
Port RX rate
Ex. Port 1 runs at RX Rate(1024 Kbps = 0x400). Word 0 of Port 1 = 0x0000 Word
1 of Port 1 = 0x0400 Word 0,1 = Port 1 RX Rate Word 2,3 = Port 2 RX Rate Word
4,5 = Port 3 RX Rate Word 6,7 = Port 4 RX Rate Word 8,9 = Port 5 RX Rate Word
10,11 = Port 6 RX Rate Word 12,13 = Port 7 RX Rate Word 14,15 = Port 8 RX Rate
Word 16,17 = Port 9 RX Rate Word 18,19 = Port 10 RX Rate
Count of Good Packets of TX
Ex. Port 1 gets 0x2EEEE1FFFF good packets of TX. Word 0 of Port 1 = 0x0000
Word 1 of Port 1 = 0x002E Word 2 of Port 1 = 0xEEE1 Word 3 of Port 1 = 0xFFFF
Word 0,1,2,3 = Port 1 good packets Word 4,5,6,7 = Port 2 good packets Word
8,9,10,11 = Port 3 good packets Word 12,13,14,15 = Port 4 good packets Word
16,17,18,19 = Port 5 good packets Word 20,21,22,23 = Port 6 good packets Word
24,25,26,27 = Port 7 good packets Word 28,29,30,31 = Port 8 good packets Word
32,33,34,35 = Port 9 good packets Word 36,37,38,39 = Port 10 good packets
Count of Bad Packets of TX
Ex. Port 1 gets 0x2EEEE1FFFF bad packets of TX. Word 0 of Port 1 = 0x0000 Word
1 of Port 1 = 0x002E Word 2 of Port 1 = 0xEEE1 Word 3 of Port 1 = 0xFFFF Word
0,1,2,3 = Port 1 good packets Word 4,5,6,7 = Port 2 good packets Word
8,9,10,11 = Port 3 good packets Word 12,13,14,15 = Port 4 good packets Word
16,17,18,19 = Port 5 good packets Word 20,21,22,23 = Port 6 good packets Word
24,25,26,27 = Port 7 good packets Word 28,29,30,31 = Port 8 good packets Word
32,33,34,35 = Port 9 good packets Word 36,37,38,39 = Port 10 good packets
Count of Good Packets of RX
Ex. Port 1 gets 0x2EEEE1FFFF good packets of RX. Word 0 of Port 1 = 0x0000
Word 1 of Port 1 = 0x002E Word 2 of Port 1 = 0xEEE1 Word 3 of Port 1 = 0xFFFF
Word 0,1,2,3 = Port 1 good packets Word 4,5,6,7 = Port 2 good packets
Industrial Lite-Managed Booster Switch
User Manual
Modbus Memory Map
Word 8,9,10,11 = Port 3 good packets Word 12,13,14,15 = Port 4 good packets Word 16,17,18,19 = Port 5 good packets Word 20,21,22,23 = Port 6 good packets Word 24,25,26,27 = Port 7 good packets Word 28,29,30,31 = Port 8 good packets Word 32,33,34,35 = Port 9 good packets Word 36,37,38,39 = Port 10 good packets
0x1600 (5632) 40 words
R
Count of Bad Packets of RX
Ex. Port 1 gets 0x2EEEE1FFFF bad packets of RX. Word 0 of Port 1 = 0x0000 Word
1 of Port 1 = 0x002E Word 2 of Port 1 = 0xEEE1 Word 3 of Port 1 = 0xFFFF Word
0,1,2,3 = Port 1 good packets Word 4,5,6,7 = Port 2 good packets Word
8,9,10,11 = Port 3 good packets Word 12,13,14,15 = Port 4 good packets Word
16,17,18,19 = Port 5 good packets Word 20,21,22,23 = Port 6 good packets Word
24,25,26,27 = Port 7 good packets Word 28,29,30,31 = Port 8 good packets Word
32,33,34,35 = Port 9 good packets Word 36,37,38,39 = Port 10 good packets
0x2000 (8192) 1 word 0x2100 (8448) 1 word
0x2101 (8449) 5 words
Redundancy Information
Redundancy Protocol
R
0x0000: None
0x0002: RSTP
STP Root
R
0x0000: Not Root 0x0001: Root
0xFFFF: RSTP not enable
STP Port Status
0x00: Disabled
0x01: Listening
0x02: Learning
0x03: Forwarding
0x04: Blocking
0x05: Discarding
0xFF: RSTP Not Enable
R
Word 0 Hi byte = Port 1 Status Word 0 Lo byte = Port 2 Status
Word 1 Hi byte = Port 3 Status
Word 1 Lo byte = Port 4 Status
Word 2 Hi byte = Port 5 Status
Word 2 Lo byte = Port 6 Status
Word 3 Hi byte = Port 7 Status
Word 3 Lo byte = Port 8 Status
Word 4 Hi byte = Port 9 Status
Word 4 Lo byte = Port 10 Status
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Industrial Lite-Managed Booster Switch
User Manual
Modbus Memory Map
Atop Technologies, Inc.
www.atoponline.com
TAIWAN HEADQUARTER and INTERNATIONAL SALES:
2F, No. 146, Sec. 1, Tung-Hsing Rd, 30261 Chupei City, Hsinchu County Taiwan,
R.O.C. Tel: +886-3-550-8137 Fax: +886-3-550-8131 sales@atop.com.tw
ATOP CHINA BRANCH:
3F, 75th, No. 1066 Building, Qingzhou North Road, Shanghai, China Tel:
+86-21-64956231
Page 63 of 63
References
Read User Manual Online (PDF format)
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