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Cisco Bug: CSCvs06645 - %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: packets are forwarded to clients

Last Modified

Sep 03, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

switch replied to broadcast packets with mac address sourced with  FF:FF:FF:FF:FF:FF.

example : 
3	0.560976	  Broadcast	Vocollec_02:8d:fd	XID	68	Basic Format; Type 1 and Type 2 LLCs (Class II LLC); Window Size 127

meanwhile following error being reported on the switches as the switch generated the source invalid mac address '

%C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (FF:FF:FF:FF:FF:FF)

when clients sending broadcast packet with control field XID on LLC feild and source address with broadcast
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