Cisco Bug: CSCsz61349 - L2PT Guard on ME-3400 forwards offending L2PT PDU
Jan 28, 2017
- Cisco ME 3400 Series Ethernet Access Switches
Known Affected Releases
Symptom: A Cisco ME-3400 configured for Layer 2 Protocol Tunneling (L2PT ) will forward a tunneled L2PT PDU ( cdp, stp , vtp , udld ) coming from a L2PT enabled port rather than dropping the frame. A port configured for L2PT should not accept tunneled PDUs because this is indicative of a software configuration problem or layer 2 loop. Conditions: The following error message would be printed when this bug is seen. "PM-4-ERR_DISABLE: l2ptguard error detected on Fa0/2, putting Fa0/2 in err-disable state"
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Bug Details Include
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