Configuring Remote Port Mirroring - 3Com 4500 PWR 26-Port Configuration Manual

To do...
port for the
port mirroring
group
When configuring local port mirroring, note that:
You need to configure the source and destination ports for the local port mirroring to take effect.
The source port and the destination port cannot be a fabric port or a member port of an existing
mirroring group; besides, the destination port cannot be a member port of an aggregation group or
a port enabled with LACP or STP.
With port mirroring – STP collaboration enabled, if you configure a port in Discarding state as a
mirroring port, the port mirroring configuration does not take effect until the port transits to
Forwarding state.
Suppose port mirroring – STP collaboration is enabled on a device in an MSTP network. To make
the port mirroring configuration take effect on a port, make sure that the port is in Forwarding state
in all instances.
To enable port mirroring on an XRN fabric, you are recommended to enable port mirroring – STP
collaboration.

Configuring Remote Port Mirroring

A Switch 4500 can serve as a source switch, an intermediate switch, or a destination switch in a remote
port mirroring networking environment.
Configuration on a switch acting as a source switch
1) Configuration prerequisites
The source port, the reflector port, and the remote-probe VLAN are determined.
Layer 2 connectivity is ensured between the source and destination switches over the
remote-probe VLAN.
The direction of the packets to be monitored is determined.
2) Configuration procedure
Follow these steps to perform configurations on the source switch:
Use the command...
interface interface-type
interface-number
In port view
mirroring-group group-id
monitor-port
views have the same effect.
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Remarks