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Cisco Bug: CSCuq46369 - Egress SPAN adds 4byte BCM Vlan ID for untagged packets

Last Modified

Dec 01, 2014

Products (1)

  • Cisco LAN Switch Software

Known Affected Releases

11.0(1b)

Description (partial)

Symptom:
An extra 4byte vlan tag is added to the mirrored copy of vlan untagged packet with egress local and remote SPAN.

Conditions:
For an egress source configured in an erspan or local span session,  span copies of untagged packets will have an extra 4 byte vlan tag. The untagged packets exiting the port(s) are the packets belonging to the native vlan for that port(s).
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