3Com WX3000 Series Operation Manual page 407

When configuring the source switch, note that:
All ports of a remote source mirroring group are on the same device. Each remote source mirroring
group can be configured with only one reflector port.
The reflector port cannot be a member port of an existing mirroring group, a member port of an
aggregation group, or a port enabled with LACP or STP. It must be an access port and cannot be
configured with the functions like VLAN-VPN, port loopback detection, QoS, port security, and so
on.
You cannot modify the duplex mode, port rate, and MDI attribute of a reflector port.
Only an existing static VLAN can be configured as the remote-probe VLAN. To remove a
remote-probe VLAN, you need to restore it to a normal VLAN first. A remote port mirroring group
gets invalid if the corresponding remote port mirroring VLAN is removed.
Do not configure a port connecting the intermediate switch or destination switch as the mirroring
source port. Otherwise, traffic disorder may occur in the network.
Configuration on the device acting as an intermediate switch
1) Configuration prerequisites
The trunk ports and the remote-probe VLAN are determined.
Layer 2 connectivity is ensured between the source and destination switches over the
remote-probe VLAN.
2) Configuration procedure
Follow these steps to configure the intermediate switch:
To do...
Enter system view
Create a VLAN and enter VLAN
view
Configure the current VLAN as
the remote-probe VLAN
Return to system view
Enter the view of the Ethernet
port connecting to the source
switch, destination switch or
other intermediate switch
Configure the current port as
trunk port
Configure the trunk port to
permit packets from the
remote-probe VLAN
Configuration on the device acting as a destination switch
1) Configuration prerequisites
The destination port and the remote-probe VLAN are determined.
Layer 2 connectivity is ensured between the source and destination switches over the
remote-probe VLAN.
2) Configuration procedure
Use the command...
system-view
vlan vlan-id
remote-probe vlan enable
quit
interface interface-type
interface-number
port link-type trunk
port trunk permit vlan
remote-probe-vlan-id
1-6
Remarks
—
vlan-id is the ID of the
remote-probe VLAN.
Required
—
—
Required
By default, the port type is
Access.
Required