3Com Switch 7750 Configuration Guide Guide

Mirroring Configuration 647
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■ When a switch functions as the intermediate device or destination device for
remote mirroring, you are recommended to configure traffic redirect on the
incoming port in order to guarantee data mirroring is achieved normally. By
configuring traffic redirect, you can redirect all packets of the remote-probe
VLAN to the corresponding outgoing port (on the intermediate device) or
mirroring destination port (on the destination device). If you want to mirror
packets in both directions, you must configure traffic redirect on the incoming
Create a remote-probe VLAN
and enter VLAN view
vlan vlan-id
vlan-id is the ID of the
remote-probe VLAN.
Define the current VLAN as a
remote-probe VLAN
remote-probe vlan enable Required
Exit the current view quit -
Enter port view of the relay
port through which the
destination switch is
connected to the source
switch or an intermediate
switch
interface interface-type
interface-number
-
Configure the current port as
a trunk port
port link-type trunk
Required
By default, the type of the
port is access.
Configure the relay port to
permit packets from the
remote-probe VLAN to pass
port trunk permit vlan
remote-probe-vlan-id
Required
This configuration is necessary
for ports through which the
destination switch is
connected to the source
switch or an intermediate
switch.
Exit current view quit -
Configure the remote
destination mirroring group
mirroring-group group-id
remote-destination
Required
Configure the destination
port for remote mirroring
mirroring-group group-id
monitor-port monitor-port
Required
The destination port for
remote mirroring must be of
the Access type. LACP must
be disabled on this port and
you are recommended to
disable STP on this port.
After you configure a port as
the destination port for
remote mirroring, the switch
does not allow you to change
the port type or default VLAN
ID of the port.
Configure the remote-probe
VLAN for the remote
destination mirroring group
mirroring-group group-id
remote-probe vlan
remote-probe-vlan-id
Required
Display the configuration of
the remote destination
mirroring group
display mirroring-group
remote-destination
Optional
This command can be
executed in any view.
Table 514 Configure RSPAN on the destination switch
Operation Command Description