port. 
  The mirroring destination port should be excluded from any gathering 
group. 
  The port with the spanning tree function initiated is forbidden to be the 
mirroring destination port. 
Select  the  mirroring  direction;  otherwise,  it  is  regarded  as  the  disabled 
mirroring function. 
  Receiving direction of mirroring: Copy the data received by the source 
ports to the destination port. 
  Sending direction of mirroring: Copy the data sent by the source ports 
to the destination port. 
  Receiving  and  sending  direction  of  mirroring:  Copy  both  the  data 
received and sent by the source ports to the destination port. 
Note 
Package  loss  arises  supposing  that  the  sum  of  the  bandwidth  of  the 
source ports is greater than that of the destination one. 
Display the port of the switch. 
Tip 
The port selected as the destination port is prohibited to be the source one 
simultaneously. 
Select the source port of the switch. 
3.2.3 Application Scenarios 
Networking Demand 
The following is an enterprise user’s network environment. 
  Division 1 accesses the switch C through the port 1. 
  Division 2 accesses the switch C through the port 2. 
  The server is connected to the port 3 of the switch C.