Operation Manual – Mirroring
H3C S3100 Series Ethernet Switches Chapter 1 Mirroring Configuration
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[Sysname] mirroring-group 1 monitor-port Ethernet 1/0/3
# Display configuration information about local mirroring group 1.
[Sysname] display mirroring-group 1
mirroring-group 1:
type: local
status: active
mirroring port:
Ethernet1/0/1 both
Ethernet1/0/2 both
monitor port: Ethernet1/0/3
After the configurations, you can monitor all packets received on and sent from the
R&D department and the marketing department on the data detection device.
1.3.2 Remote Port Mirroring Configuration Example
I. Network requirements
The departments of a company connect to each other through S3100 Ethernet
switches:
z Switch A, Switch B, and Switch C are S3100 series switches.
z Department 1 is connected to Ethernet 1/0/1 of Switch A.
z Department 2 is connected to Ethernet 1/0/2 of Switch A.
z Ethernet 1/0/3 of Switch A connects to Ethernet 1/0/1 of Switch B.
z Ethernet 1/0/2 of Switch B connects to Ethernet 1/0/1 of Switch C.
z The data detection device is connected to Ethernet 1/0/2 of Switch C.
The administrator wants to monitor the packets sent from Department 1 and 2 through
the data detection device.
Use the remote port mirroring function to meet the requirement. Perform the following
configurations:
z Use Switch A as the source switch, Switch B as the intermediate switch, and
Switch C as the destination switch.
z On Switch A, create a remote source mirroring group, configure VLAN 10 as the
remote-probe VLAN, ports Ethernet 1/0/1 and Ethernet 1/0/2 as the source ports,
and port Ethernet 1/0/4 as the reflector port.
z On Switch B, configure VLAN 10 as the remote-probe VLAN.
z Configure Ethernet 1/0/3 of Switch A, Ethernet 1/0/1 and Ethernet 1/0/2 of Switch
B, and Ethernet 1/0/1 of Switch C as trunk ports, allowing packets of VLAN 10 to
pass.
z On Switch C, create a remote destination mirroring group, configure VLAN 10 as
the remote-probe VLAN, and configure Ethernet 1/0/2 connected with the data
detection device as the destination port.
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