Port Mirroring Configuration Examples 901
# Add port GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to the port mirroring
group as source ports. Add port GigabitEthernet 1/0/3 to the port mirroring group
as the destination port.
[SwitchC] mirroring-group 1 mirroring-port GigabitEthernet 1/0/1 Gig
abitEthernet 1/0/2 both
[SwitchC] mirroring-group 1 monitor-port GigabitEthernet 1/0/3
# Display the configuration of all the port mirroring groups.
[SwitchC] display mirroring-group all
mirroring-group 1:
type: local
status: active
mirroring port:
GigabitEthernet1/0/1 both
GigabitEthernet1/0/2 both
monitor port: GigabitEthernet1/0/3
After finishing the configuration, you can monitor all the packets received and
sent by R&D department and Marketing department on the Data monitoring
device.
Remote Port Mirroring
Configuration Example
Network requirements
The departments of a company connect to each other through Ethernet switches:
■ Department 1 is connected to GigabitEthernet 1/0/1 of Switch A.
■ Department 2 is connected to GigabitEthernet 1/0/2 of Switch A.
■ GigabitEthernet 1/0/3 of Switch A connects to GigabitEthernet 1/0/1 of Switch
B.
■ GigabitEthernet 1/0/2 of Switch B connects to GigabitEthernet 1/0/1 of Switch
C.
■ The data monitoring device is connected to GigabitEthernet 1/0/2 of Switch C.
The administrator wants to monitor the packets sent from Department 1 and 2
through the data monitoring device.
Use the remote port mirroring function to meet the requirement. Perform the
following configurations:
■ Use Switch A as the source device, Switch B as the intermediate device, and
Switch C as the destination device.
■ On Switch A, create a remote source mirroring group; create VLAN 2 and
configure it as the remote port mirroring VLAN; add port GigabitEthernet 1/0/1
and GigabitEthernet 1/0/2 to the port mirroring group as two source ports.
Configure port GigabitEthernet 1/0/3 as the outbound mirroring port.
■ Configure port GigabitEthernet 1/0/3 of Switch A, port GigabitEthernet 1/0/1
and GigabitEthernet 1/0/2 of Switch B, and port GigabitEthernet 1/0/1 of
Switch C as trunk ports and configure them to permit packets of VLAN 2.
■ Create a remote destination mirroring group on Switch C. Configure VLAN 2 as
the remote port mirroring VLAN and port GigabitEthernet 1/0/2, to which the
data monitoring device is connected, as the destination port.
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