H3C MSR3600 12500R Switch Router Series Instructions
- June 5, 2024
- H3C
Table of Contents
- H3C MSR3600 12500R Switch Router Series
- Introduction
- Prerequisites
- Network configuration
- Analysis
- Procedures
- Configure an IP address for the interface HundredGigE 1/0/1 on Device A.
- Configuring basic IS-IS
- Enable IS-IS on Device A and configure Device A as a Level-1-2 router.
- Enable IS-IS on the interface HundredGigE 1/0/1.
- Configure other interfaces in the same way HundredGigE 1/0/1 is configured.
- Enable IS-IS on Device B and configure Device B as a Level-2 router.
- Enable IS-IS on the interface HundredGigE 1/0/1.
- Enable IS-IS on GW 1 and configure GW 1 as a Level-1 router.
- Enable IS-IS on the interface HundredGigE 1/0/1.
- Configure other gateways in the same way GW 1 is configured. (Details not
- Display IS-IS routing information on Device B to view the network address of
- Configure IS-IS route summarization on Device A.
- Verifying the configuration
- Display IS-IS routing information on Device B.
- Configuration files
- Related documentation
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
H3C MSR3600 12500R Switch Router Series
Introduction
This document provides IS-IS route summarization configuration examples.
Prerequisites
The configuration examples in this document were created and verified in a lab
environment, and all the devices were started with the factory default
configuration. When you are working on a live network, make sure you
understand the potential impact of every command on your network.
This document assumes that you have basic knowledge of IS-IS route
summarization.
Network configuration
As shown in Figure 1, the five departments of a company use IS-IS to connect to the backbone network. The five departments are assigned the networks 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24, 192.168.4.0/24, and 192.168.5.0/24. Configure IS-IS route summarization to reduce routing entries and save system resources for Device B.
Figure 1 Network diagram
Table 1 Interface and IP address assignment
Analysis
Configure route summarization on Device A because route summarization applies only to locally generated LSPs. To avoid blackhole routes, set the summary route to 192.168.0.0/22.
Software versions used
This configuration example was created and verified on Release 3606.
Restrictions and guidelines
By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.
Procedures
Configuring IP addresses for interfaces
Configure an IP address for the interface HundredGigE 1/0/1 on Device A.
Configuring basic IS-IS
Configuring Device A
Enable IS-IS on Device A and configure Device A as a Level-1-2 router.
[DeviceA] isis 1
[DeviceA-isis-1] network-entity 10.0000.0000.0001.00
[DeviceA-isis-1] is-level level-1-2
[DeviceA-isis-1] quit
Enable IS-IS on the interface HundredGigE 1/0/1.
[DeviceA] interface hundredgige 1/0/1
[DeviceA–HundredGigE1/0/1] isis enable 1
[DeviceA–HundredGigE1/0/1] quit
Configure other interfaces in the same way HundredGigE 1/0/1 is configured.
(Details not shown.)
Configuring Device B
Enable IS-IS on Device B and configure Device B as a Level-2 router.
[DeviceB] isis 1
[DeviceB-isis-1] network-entity 10.0000.0000.0002.00
[DeviceB-isis-1] is-level level-2
[DeviceB-isis-1] quit
Enable IS-IS on the interface HundredGigE 1/0/1.
[DeviceB] interface hundredgige 1/0/1
[DeviceB–HundredGigE1/0/1] isis enable 1 [DeviceB–HundredGigE1/0/1] quit
Configuring the gateways
Enable IS-IS on GW 1 and configure GW 1 as a Level-1 router.
[GW1] isis 1
[GW1-isis-1] network-entity 10.0001.0001.0001.00
[GW1-isis-1] is-level level-1
[GW1-isis-1] quit
Enable IS-IS on the interface HundredGigE 1/0/1.
[GW1] interface hundredgige 1/0/1
[GW1–HundredGigE1/0/1] isis enable 1
[GW1–HundredGigE1/0/1] quit
Configure other gateways in the same way GW 1 is configured. (Details not
shown.)
Displaying IS-IS routing information on Device B
Display IS-IS routing information on Device B to view the network address of
each department.
[DeviceB] display isis route
Configuring IS-IS route summarization
Configure IS-IS route summarization on Device A.
[DeviceA] isis 1
[DeviceA] address-family ipv4
[DeviceA-isis-1-ipv4]summary 192.168.0.0 22
Verifying the configuration
Display IS-IS routing information on Device B.
[DeviceB] display isis route
Configuration files
- Device A:
- Device B:
- GW 1:
- The configuration files for other gateways are similar to the configuration file for GW 1. (Details not shown.)
Related documentation
- • H3C S12500R Switch Router Series Layer 3—IP Routing Command Reference-R3606
• H3C S12500R Switch Router Series Layer 3—IP Routing Configuration Guide-R3606