3Com Switch 7750 Configuration Guide Guide

Mirroring Configuration 645
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■ For a centralized I/O Module, if multiple source ports are specified in remote
port mirroring configuration, all the source ports must be on the same I/O
Module.
■ You can configure only one reflector port of a remote source mirroring group
or one destination port of a local mirroring group on each centralized I/O
Module. As for the distributed system, you can configure only one reflector
port of a remote source mirroring group or one destination port of a local
mirroring group for the whole system. Only one mirroring destination I/O
Module can be configured for the centralized or distributed system, and can be
referenced by only one local mirroring group.
■ To mirror tagged packets, you need to configure VLAN VPN on the reflector
port.
■ The reflector ports are mutually exclusive with STP or DLDP. That is, if STP or
DLDP is enabled on a port, you are not recommended to configure it as a
Configure the relay port to
permit packets from the
remote-probe VLAN to pass
port trunk permit vlan
remote-probe-vlan-id
Required
This setting is required for
source switch ports that
connected with the
intermediate switch or
destination switch.
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Configure a remote source
mirroring group
mirroring-group group-id
remote-source
Required
Configure a source port for
remote mirroring
mirroring-group group-id
mirroring-port
mirroring-port-list { both |
inbound | outbound }
Required
Configure a remote reflector
port
mirroring-group group-id
reflector-port reflector-port
Required
The remote reflector port
must be of the Access type.
LACP and must be disabled
on this port and you are
recommended to disable STP
on this port.
After a port is configured as a
reflector port, the switch does
not allow you to perform any
of the following
configurations:
■ Changing the port type
and its default VLAN ID
■ Add it to another VLAN
Configure the remote-probe
VLAN for the remote source
mirroring group
mirroring-group group-id
remote-probe vlan
remote-probe-vlan-id
Required
Display the configuration of
the remote source mirroring
group
display mirroring-group
remote-source
Optional
This command can be
executed in any view.
Table 512 Configure RSPAN on the source switch
Operation Command Description