What is VSPAN? › Packet Duplication

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Packet Duplication

When a VSPAN is the source of a monitor session, every physical interface of the VLAN is also a source. Packets that travel between two servers on the VLAN are duplicated.

Diagram showing how packets are duplicated with VLAN as source

Duplication also occurs when more than one VLAN is sourced and servers in both VLANs communicate with each other. The following commands represent the configuration in the illustration:

(config)# monitor session 1 source vlan 10
(config)# monitor session 1 destination interface f2/13