3Com 7757 Configuration Manual page 693

Table 558 Configure remote port mirroring on the destination switch
Operation
Enter port view of the relay
port through which the
destination switch is
connected to the source
switch or an intermediate
switch
Configure the current port as
a trunk port
Configure the relay port to
permit packets from the
remote-probe VLAN to pass
Exit current view
Configure the remote
destination mirroring group
Configure the destination
port for remote mirroring
Configure the remote-probe
VLAN for the remote
destination mirroring group
Display the configuration of
the remote destination
mirroring group
n
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
port because the incoming port learns the source MAC addresses and
destination MAC addresses of packets at the same time. If the incoming port of
a packet is the same as the outgoing port of the packet, the packet is dropped.
Refer to "Configuring Redirect" on page 673 for configuring traffic redirect.
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
Command
interface interface-type
interface-number
port link-type trunk
port trunk permit vlan
remote-probe-vlan-id
quit
mirroring-group group-id
remote-destination
mirroring-group group-id
monitor-port monitor-port
mirroring-group group-id
remote-probe vlan
remote-probe-vlan-id
display mirroring-group
remote-destination
Mirroring Configuration
Description
-
Required
By default, the type of the
port is access.
Required
This configuration is necessary
for ports through which the
destination switch is
connected to the source
switch or an intermediate
switch.
-
Required
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.
Required
Optional
This command can be
executed in any view.
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