Mirrors traffic from a port to a different port on the same switch.
RSPAN
Mirrors traffic from a port on a switch to a port on a different switch. The RSPANed traffic is carried as Layer 2 nonroutable traffic over a user-specified RSPAN VLAN that is dedicated for that RSPAN session in all participating switches. All participating switches must be trunk-connected at Layer 2.
ERSPAN
The ERSPAN source session copies traffic from the source ports or source VLANs and forwards the
traffic using routable GRE-encapsulated packets to the ERSPAN destination session. The ERSPAN
destination session switches the traffic to the destinations.
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