Nortel Networks 10BASE-T manual Port Mirroring Configuration Rules

Using the BayStack 410-24T 10BASE-T Switch

Port Mirroring Configuration Rules

The following configuration rules apply to any port mirroring configuration:

•A monitor port cannot be configured as a trunk member or IGMP member, and cannot be used for normal switch functions.

•When a port is configured and enabled as a monitor port, the port is automatically disabled from participating in the spanning tree. When the port is reconfigured as a standard switch port (no longer a monitor port), the port becomes enabled for spanning tree participation.

•When creating a port-basedport mirroring configuration, be sure that the monitor port and both of the mirrored ports, port X and port Y, have the same configuration. Use the VLAN Configuration screen to configure the VLAN (see “VLAN Configuration” on page 3-41).

•VLAN configuration settings for any ports configured for port-based mirroring cannot be changed. Use the Port Mirroring Configuration screen to disable port mirroring (or reconfigure the port mirroring ports), then change the VLAN configuration settings.

•For port-based monitoring of traffic, use one of the following modes for monitoring broadcast, IP multicast, or unknown DA frames:

--Monitor all traffic received by port X.

--Monitor all traffic transmitted by port X.

--Monitor all traffic received and transmitted by port X.

For more information about using the Port Mirroring feature, see “Port Mirroring Configuration” on page 3-65.

Also see Appendix C, “Quick Steps to Features,” for configuration flowcharts that can help you use this feature.

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