Displaying Port Mirroring; Mirroring Configuration Example; Local Port Mirroring Configuration Example - 3Com 4210 9-Port Configuration Manual

Operation
Create a remote destination
mirroring group
Configure the destination port
for the remote destination
mirroring group
Configure the remote-probe
VLAN for the remote
destination mirroring group
When configuring a destination switch, note that:
The destination port of remote port mirroring cannot be a member port of an aggregation group, or
a port enabled with LACP or STP.
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.

Displaying Port Mirroring

After the above configurations, you can execute the display commands in any view to view the
mirroring running information, so as to verify your configurations.
Table 1-7 Display configuration of mirroring
Operation
Display port mirroring
configuration

Mirroring Configuration Example

Local Port Mirroring Configuration Example

Network requirements
The departments of a company connect to each other through 3Com 4210 switches:
Research and Development (R&D) department is connected to Switch C through Ethernet 1/0/1.
Marketing department is connected to Switch C through Ethernet 1/0/2.
Data detection device is connected to Switch C through Ethernet 1/0/3
The administrator wants to monitor the packets received on and sent from the R&D department and the
marketing department through the data detection device.
Use the local port mirroring function to meet the requirement. Perform the following configurations on
Switch C.
Configure Ethernet 1/0/1 and Ethernet 1/0/2 as mirroring source ports.
Configure Ethernet 1/0/3 as the mirroring destination port.
Command
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
Command
display mirroring-group { group-id |
all | local | remote-destination |
remote-source }
1-7
Description
Required
Required
Required
Description
Available in any view