Monitoring and Analyzing Switch Operation

Traffic Mirroring

Selecting All Inbound/Outbound Traffic to Mirror

Use the commands in this section to configure all inbound and/or outbound traffic on specified VLAN, port, or trunk interfaces for a local or remote mirroring session. For an example of a mirroring configuration that selects all inbound or outbound traffic on a monitored interface, see:

“Example: Local Mirroring Using Traffic-Direction Criteria” on page B-87

“Example: Remote Mirroring Using Traffic-Direction Criteria” on page B-90

N o t e

If you have already configured session 1 with a local or remote destination (as

 

described in “3. Configure a Mirroring Session on the Source Switch” on page

 

B-52),you can enter the vlan < vid > monitor or interface < port > monitor

 

command without additional parameters for traffic-selection criteria and

 

session number to configure mirroring for all inbound and outbound traffic

 

on the specified VLAN or port interfaces in session 1 with the preconfigured

 

destination.

 

 

Port Interface with Traffic Direction as the Selection Criteria

Use the following command to select all traffic on a port, trunk, and/or mesh interface for mirroring according to traffic direction (inbound and/or out­ bound):

Syntax: [no] interface < port/trunk/mesh > monitor all < in out both > mirror

<1 - 4 name-str > [< 1 - 4 name-str > < 1 - 4 name-str >

<1 - 4 name-str >] [no-tag-added]

This command assigns a mirroring source to a previously configured mirroring session on a source switch by specifying the port. trunk, and/or mesh source(s) to use, the direction of traffic to mirror, and the session.

The no form of the command removes a mirroring source assigned to the session, but does not remove the session itself. This enables you to repurpose a session by removing an unwanted mirroring source and adding another in its place.

interface < port/trunk/mesh >: Identifies the source port(s), static trunk(s), and/or mesh on which to mirroring traffic. Use a hyphen for a range of consecutive ports or trunks (a5- a8, Trk2-Trk4).Use a comma to separate non-contiguous interfaces (b11,b14,Trk4,Trk7).

B-57