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Highlighted
Beginner

LINK FLUCTUATION PROBLEM


Log Buffer (4096 bytes):
s)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 132
000196: *May 14 10:02:27.507: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 132
000197: *May 21 17:53:51.823: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 136
000198: *May 22 07:07:26.252: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 2 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 132
000199: *May 25 21:38:09.486: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 2 has failed or been turned off
000200: *May 25 21:38:14.490: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 2 is okay
000201: *Jun 1 00:51:01.198: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000202: *Jun 1 00:52:06.222: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000203: *Jun 2 00:46:05.380: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:46:05 UTC Tue Jun 2 2020 to 06:16:05 IST Tue Jun 2 2020, configured from console by cisco on vty0 (10.100.129.10).
000204: *Jun 2 00:46:05.384: %SYS-5-CONFIG_I: Configured from console by cisco on vty0 (10.100.129.10)
000205: *Jun 2 09:53:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 06:16:05 IST Tue Jun 2 2020 to 15:23:00 IST Tue Jun 2 2020, configured from console by cisco on vty0 (10.100.129.10).
000206: Jun 9 12:07:30.885: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 130
000207: Jun 28 21:01:05.542: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 136
000208: Jul 7 13:07:06.534: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 2 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 136
000209: Jul 18 04:57:54.999: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 136
000210: Jul 22 05:27:06.983: %SFF8472-5-THRESHOLD_VIOLATION: Te1/1: Rx power low alarm; Operating value: -33.9 dBm, Threshold value: -18.4 dBm.
000211: Jul 24 05:13:32.879: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000212: Jul 24 05:14:47.943: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000213: Jul 24 05:14:52.943: %C4K_IOSMODPORTMAN-6-POWERSUPPLYFANGOOD: Fan of power supply 1 is okay
000214: Jul 24 05:15:37.983: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 2 has failed or been turned off
000215: Jul 24 05:15:52.999: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 2 is okay
000216: Jul 24 06:56:56.819: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000217: Jul 24 06:57:16.839: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000218: Jul 24 06:57:21.839: %C4K_IOSMODPORTMAN-6-POWERSUPPLYFANGOOD: Fan of power supply 1 is okay
000219: Jul 24 06:59:11.859: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 2 has failed or been turned off
000220: Jul 24 07:00:36.927: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 2 is okay
000221: Jul 30 13:44:55.313: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000222: Jul 30 14:20:56.673: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000223: Jul 30 14:30:07.037: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000224: Jul 30 14:46:42.613: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000225: Aug 1 09:32:13.722: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
000226: Aug 1 09:32:38.742: %C4K_IOSMODPORTMAN-6-POWERSUPPLYGOOD: Power supply 1 is okay
000227: Aug 1 11:43:39.462: %SYS-5-CONFIG_I: Configured from console by cisco on vty0 (10.100.138.74)

3 REPLIES 3
Highlighted
Hall of Fame Community Legend

Re: LINK FLUCTUATION PROBLEM

What issue?
All I can see are alarms for power supply 1.
Highlighted
Hall of Fame Guru

Re: LINK FLUCTUATION PROBLEM

There are quite a few messages like this one

000196: *May 14 10:02:27.507: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/2 in vlan 132

 

I am interested in the fact that some of these messages show Re1/2 to be in vlan 130, while others show it to be in vlan 132, and still other show it to be in vlan 136. What can you tell us about Te1/2? How is it configured? What is connected to it?

HTH

Rick
Highlighted
Beginner

Re: LINK FLUCTUATION PROBLEM

Hi!

You are having two problems:

1) One of your Power Supplies is etiher faulty or it's power source is flapping.

2) Endpoints connected via Te1/2 are sending frames with invalid source MAC (either all 0 or a Multicast MAC).

Could you share the output of the following?

#show run int Te 1/2

Thanks

Juls

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