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error message on 4500 switch please help me rectify this issue .

LLog Buffer (4096 bytes):
valid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
4d15h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 2 times)Packet recei                                                                                                                               ved with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
4d21h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 5196 times)Packet re                                                                                                                               ceived with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
5d04h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 58415 times)Packet r                                                                                                                               eceived with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vla                                                                                                                               n 1
5d10h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 44163 times)Packet r                                                                                                                               eceived with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan                                                                                                                                1
5d17h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 18786 times)Packet r                                                                                                                               eceived with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vla                                                                                                                               n 1
5d23h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 4897 times)Packet re                                                                                                                               ceived with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan                                                                                                                                1
6d06h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 7 times)Packet recei                                                                                                                               ved with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
6d14h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 16 times)Packet rece                                                                                                                               ived with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
6d22h: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 8 times)Packet recei                                                                                                                               ved with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w0d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 6 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w0d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 6 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w0d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 27713 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w1d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 89677 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w1d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 38722 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w1d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 7 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w1d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 22133 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w2d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 46596 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w2d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 11 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w2d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 10 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w2d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 26497 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
1w3d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 61085 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w3d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 5 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Gi2/1 in vlan 1
1w3d: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 11 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po2 in vlan 1
1w3d: %C4K_REDUNDANCY-5-CONFIGSYNC: The private-config has been successfully synchronized to the standby supervisor
1w3d: %C4K_REDUNDANCY-5-CONFIGSYNC: The startup-config has been successfully synchronized to the standby supervisor
1w3d: %SYS-5-CONFIG_I: 

 

 

 

Please help me with trouble shooting steps and also commands..........
 

1 REPLY
Cisco Employee

Hi,Please ask  the question

Hi,

Please ask  the question in LAN SWITCHING community for speedy response but it looks like a message indicating that Switch is seeing a packet with src mac 00.00.00.00.00.00 which obviously is Invalid. Switch learns the mac from src in the frame and it is wrong. Looks like Mac-spoofing.

Regards,

KANWAL

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