Monitoring and Analyzing Switch Operation

Traffic Mirroring

monitor all < in out both >: For the interface specified by

<port/trunk/mesh >, selects traffic to mirror based on whether the traffic is entering or leaving the switch on the interface.

in: Mirrors entering traffic.out: Mirrors exiting traffic.both: Mirrors traffic entering and exiting.

If you enter the monitor all command without selection criteria or a session identifier, the command applies by default to session 1 (see “Monitor Command” on page B-96).

mirror < 1 - 4 < name-str>: Assigns the traffic specified by the interface and direction to a session by number or (if configured) by name. The session must have been previously configured as described in “3. Configure a Mirroring Session on the Source Switch” on page B-52.Depending on how many sessions are already configured on the switch, you can use the same command to assign the specified source to up to four sessions; for example, interface a1 monitor all in mirror 1 2 4. For limits on configuring mirroring sources in a session, refer to “Mirroring-Source Restrictions” on page B-56.

<1 - 4 >: Configures the selected port traffic to be mirrored in the specified session number.

[ name < name-str >]: Optional; configures the selected port traffic to be mirrored in the specified session name. The string can be used interchangeably with the session number when using this command to assign a mirroring source to a session. To configure an alphanumeric name for a mirror session, refer to the command description in “Configuring a Source Switch in a Remote Mirroring Session” on page B-53.

[no-tag-added]:Prevents a VLAN tag from being added to the mirrored copy of an outbound packet sent to a local or remote mirroring destination. See “Untagged Mirrored Packets” on page B-59for more information.

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