cisco Nexus 3000 Series Low Latency Switches Instructions

cisco Nexus 3000 Series Low Latency Switches

Information About Session Manager

Session Manager allows you to implement your configuration changes in batch mode. Session Manager works in the following phases:

• Configuration session— Creates a list of commands that you want to implement in session manager mode.
• Validation—Provides a basic semantic check on your configuration. Cisco NX-OS returns an error if the semantic check fails on any part of the configuration.
• Verification—Verifies the configuration as a whole, based on the existing hardware and software configuration and resources. Cisco NX-OS returns an error if the configuration does not pass this verification phase.
• Commit— Cisco NX-OS verifies the complete configuration and implements the changes atomically to the device. If a failure occurs, Cisco NX-OS reverts to the original configuration.
• Abort—Discards the configuration changes before implementation.

You can optionally end a configuration session without committing the changes. You can also save a configuration session.

Guidelines and Limitations for Session Manager

Session Manager has the following configuration guidelines and limitations:

• Session Manager supports only the access control list (ACL) feature.
• You can create up to 32 configuration sessions.
• You can configure a maximum of 20,000 commands across all sessions.

Configuring Session Manager

Creating a Session
You can create up to 32 configuration sessions.

| Command or Action| Purpose
---|---|---
Step 1| switch# configure session name| Creates a configuration session and enters session configuration mode. The name can be any alphanumeric string.
Displays the contents of the session.
Step 2| (Optional) switch(config-s)# show configuration session [ name ]| Displays the contents of the session.
Step 3| (Optional) switch(config-s)# save location| Saves the session to a file. The location can be in bootless or volatile.

Configuring ACLs in a Session

You can configure ACLs within a configuration session.

Procedure

| Command or Action| Purpose
---|---|---
Step 1| switch# configure session name| Creates a configuration session and enters session configuration mode. The name can be any alphanumeric string.
Step 2| switch(config-s)# ip access-list name| Creates an ACL.
Step 3| (Optional) switch(config-s-acl)# permit protocol source destination| Adds a permit statement to the ACL.
Step 4| switch(config-s-acl)# interface interface-type number| Enters interface configuration mode.
Step 5| switch(config-s-if)# ip port access-group name in| Adds a port access group to the interface.
Step 6| (Optional) switch# show configuration session [ name ]| Displays the contents of the session.

Verifying a Session
To verify a session, use the following command in session mode:

configuration session.

Committing a Session
To commit a session, use the following command in session mode:

configuration session.

Saving a Session
To save a session, use the following command in session mode:

file. The location can be in bootflash or volatile.

Discarding a Session
To discard a session, use the following command in session mode:

applying the commands.

Configuration Example for Session Manager

The following example shows how to create a configuration session for ACLs:

• switch# configure session name test2
• switch(config-s)# ip access-list acl2
• switch(config-s-acl)# permit tcp any any
• switch(config-s-acl)# exit
• switch(config-s)# interface Ethernet 1/4
• switch(config-s-ip)# ip port access-group acl2 in
• switch(config-s-ip)# exit
• switch(config-s)# verify
• switch(config-s)# exit
• switch# show configuration session test2

Verifying the Session Manager Configuration

To verify Session Manager configuration information, perform one of the following tasks:

configuration session.
show configuration session status [ name ]| Displays the status of the configuration session.
show configuration session summary| Displays a summary of all the configuration sessions.

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