900 CHAPTER 72: PORT MIRRORING CONFIGURATION
Port Mirroring
Configuration
Examples
Local Port Mirroring
Configuration Example
Network requirements
The departments of a company connect to each other through Ethernet switches:
■ Research and Development (R&D) department is connected to Switch C
through GigabitEthernet 1/0/1.
■ Marketing department is connected to Switch C through GigabitEthernet
1/0/2.
■ Data monitoring device is connected to Switch C through GigabitEthernet
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 monitoring
device.
Use the local port mirroring function to meet the requirement. Perform the
following configurations on Switch C.
■ Configure GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 as mirroring source
ports.
■ Configure GigabitEthernet 1/0/3 as the mirroring destination port.
Network diagram
Figure 265 Network diagram for local port mirroring configuration
Configuration procedure
Configure Switch C.
# Create a local port mirroring group.
<SwitchC> system-view
[SwitchC] mirroring-group 1 local
Switch C
Data monitoring
device
R&D
department
Switch A
Switch B
GE1/0/2
GE1/0/1
GE1/0/3
Marketing
department
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