1-3 
Switch  Ports involved  Function 
Trunk port
 
Receives remote mirrored packets. 
 
Destination switch
 
Destination port
 
Receives packets forwarded from the trunk port 
and transmits the packets to the data detection 
device.
 
 
 
z  Do not configure a default VLAN, a management VLAN, or a dynamic VLAN as the remote-probe 
VLAN. 
z  Configure all ports connecting the devices in the remote-probe VLAN as trunk ports, and ensure 
the Layer 2 connectivity from the source switch to the destination switch over the remote-probe 
VLAN. 
z  Do not configure a Layer 3 interface for the remote-probe VLAN, run other protocol packets, or 
carry other service packets on the remote-prove VLAN and do not use the remote-prove VLAN as 
the voice VLAN and protocol VLAN; otherwise, remote port mirroring may be affected. 
 
Mirroring Configuration 
Table 1-2 Mirroring configuration tasks 
Task  Remarks 
Configuring Local Port Mirroring  Optional 
Configuring Remote Port Mirroring  Optional 
 
Configuring Local Port Mirroring 
Configuration prerequisites 
z  The source port is determined and the direction in which the packets are to be mirrored is 
determined. 
z  The destination port is determined. 
Configuration procedure 
Table 1-3 Configure local port mirroring 
Operation  Command  Description 
Enter system view 
system-view 
— 
Create a port mirroring group 
mirroring-group group-id 
local 
Required