Layer 2 Remote Port Mirroring Configuration Example - 3Com S7906E Configuration Manual

[DeviceA] display mirroring-group all
mirroring-group 1:
type: local
status: active
mirroring port:
GigabitEthernet2/0/1
GigabitEthernet2/0/2
monitor port: GigabitEthernet2/0/3
After the above configurations are completed, you can monitor all the packets received and sent by the
marketing department and the technical department on the server.

Layer 2 Remote Port Mirroring Configuration Example

Network requirements
On the Layer 2 network shown in
Device A connects to the marketing department through GigabitEthernet 2/0/1, and to the trunk
port GigabitEthernet 2/0/1 of Device B through the trunk port GigabitEthernet 2/0/2; Device C
connects to the server through GigabitEthernet 2/0/2, and to the trunk port GigabitEthernet 2/0/2 of
Device B through the trunk port GigabitEthernet 2/0/1.
Configure Layer 2 remote port mirroring to enable the server to monitor the bidirectional traffic of
the marketing department.
Figure 1-5 Network diagram for Layer 2 remote port mirroring configuration
Configuration procedure
1) Configure Device A (the source device)
# Create a remote source mirroring group.
<DeviceA> system-view
[DeviceA] mirroring-group 1 remote-source
# Create VLAN 2.
[DeviceA] vlan 2
[DeviceA-vlan2] quit
# Configure VLAN 2 as the remote probe VLAN of the mirroring group; configure GigabitEthernet 2/0/1
as a mirroring port and GigabitEthernet 2/0/2 as the egress port in the mirroring group.
[DeviceA] mirroring-group 1 remote-probe vlan 2
[DeviceA] mirroring-group 1 mirroring-port gigabitethernet 2/0/1 both
both
both
Figure 1-5,
1-17