Monitoring and Analyzing Switch Operation

Traffic Mirroring

[seq-number]The (optional) seq-number parameter sequentially orders the mirroring actions that you enter in a policy configuration. Actions are executed on matching packets in numerical order. Default: Mirroring action statements are numbered in increments of 10, starting at 10.

class < ipv4 ipv6 > <classname > — Defines the preconfigured traffic class on which the mirroring actions in the policy are executed, and specifies whether the mirroring policy is applied to IPv4 or IPv6 traffic in the class. The classname is a text string (64 characters maximum).

action mirror <session > — Configures mirroring for the destination and session specified by the session parameter.

A packet that matches the match criteria in a class is mirrored to the exit (local or remote) port that has been previously configured for the session, where session is a value from 1 to 4 or a text string (if you configured the session with a name when you entered the mirror command).

Prerequisite: The local or remote exit port for a session must already be configured before you enter the mirror

<session > parameter in a class action statement:

In a local mirroring session, the exit port is configured with the mirror <session-number> port command.

In a remote mirroring session, the remote exit port is configured with the mirror endpoint ip and mirror <session-number> remote ip commands.

See “2. Configure a Mirroring Destination on a Remote Switch” on page B-50and “3. Configure a Mirroring Session on the Source Switch” on page B-52for more information.

Restriction: In a policy, you can configure only one mirroring session per class. You can configure the same session for different classes.

Mirroring is not executed on packets that match ignore criteria in a class.

The execution of mirroring actions is performed in the order in which the classes are numerically listed in the policy.

The complete no form of the class action mirror command or the no <seq-number> command removes a class and mirroring action from the policy configuration.

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