Port Mirroring in NSX-T 2.2

Port Mirroring is required to Mirror the traffic to an destination for Troubleshooting and other purposes.

In NSX-T Port Mirroring has following session types:-
1. Local SPAN
2. Logical SPAN
3. Remote SPAN
4. Remote L3 SPAN

Local SPAN = Source and Target Resides on the same transport Node

• Source Transport Node (ESXi or KVM)
• Source Physical NICs
• Source VM from Transport Node Selected above
• Target VM from Transport Node Selected Above

Logical SPAN =  Source and Target resides on same logical switch but can be any transport node

• Source Logical Switch
• Source VM on Logical Switch selected above
• Target VM on Logical Switch selected above

Remote SPAN  

1. Remote SPAN Source =  Source is VM on Transport Node and Target is uplink of same host

• Source Transport Node (ESXi or KVM)
• Source VM from Transport Node Selected above
• Target is Uplink of Transport Node

2. Remote SPAN Destination = Source is VLAN ID and Destination is VM on transport node

• Source Transport Node (ESXi or KVM)
• Source is VLAN ID
• Target is VM from Transport Node Selected above

Remote L3 SPAN
ERSPAN 3 and ERSPAN 2

• Source Transport Node (ESXi or KVM)
• Source VM from Transport Node Selected above
• Target is IP Address

GRE

• Source is VM
• Source is Logical Switch
• Target is IP address