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MAC-FLAPPING 00e0.fc09.bc...

MAC-FLAPPING 00e0.fc09.bcf9

Created: Mar 21, 2018 08:09:48Latest reply: May 24, 2018 15:27:03 5777 10 3 0 0
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Hi there, everyone!


This post enquires about MAC-FLAPPING 00e0.fc09.bcf9. Please see more details below.


ISSUE DESCRIPTION


I've been very curious about this MAC address issue.


I am not able to locate where the MAC address is.


Checked all 22 switches, none has the MAC address.


Anyone have idea how it comes?


Mar 19 09:17:22: %SW_MATM-4-MACFLAP_NOTIF: Host 0028.f861.c8d5 in vlan 3 is flapping between port Po13 and port Po11Mar 19 11:47:40: %SW_MATM-4-MACFLAP_NOTIF: Host 606d.c734.6585 in vlan 3 is flapping between port Po14 and port Po13Mar 20 23:44:57: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Gi1/0/6Mar 21 00:20:01: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Gi1/0/6 and port Po30Mar 21 00:21:01: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Gi1/0/6 and port Po30Mar 21 00:22:01: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Gi1/0/6 and port Po30Mar 21 00:57:05: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 00:58:06: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 00:59:06: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:00:06: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:01:06: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:36:10: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:37:10: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:38:10: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:39:11: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po31Mar 21 01:40:11: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po30 and port Po3


Please assist me with this MAC-FLAPPING 00e0.fc09.bcf9 issue. Thanks!

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Best answer

(2) (0)
StarOfWest
Created Mar 30, 2018 13:04:09

Hi there!


I think this mac-flap log belongs to a Cisco device :) Po is a port-channel interface :)

For Huawei, please check the following link to find more details about Mac-flap and what are the actions required to mitigate the phenomenon:

http://support.huawei.com/hedex/pages/EDOC1000081667DEE0811N/07/EDOC1000081667DEE0811N/07/resources/dc/dc_cfg_mac_1037.html?ft=0&fe=10&hib=10.3.4.3.7.3.1&id=dc_cfg_mac_1037&text=Configuring Global MAC Address Flapping Detection&docid=EDOC1000081667.

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All Answers
StarOfWest
StarOfWest Created Mar 21, 2018 09:48:21

Can you tell me the model and software version of the system that shows those traps?
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owenchen
owenchen Created Mar 22, 2018 01:51:31

MODEL : S5720-52X-PWR-SI-AC
VRP (R) software, Version 5.160 (S5720 V200R008C00SPC500)
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Daniel_Ger
Daniel_Ger Created Mar 30, 2018 08:19:42

What is Port Po30? Never Seen this
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StarOfWest
StarOfWest Created Mar 30, 2018 13:04:09

Hi there!


I think this mac-flap log belongs to a Cisco device :) Po is a port-channel interface :)

For Huawei, please check the following link to find more details about Mac-flap and what are the actions required to mitigate the phenomenon:

http://support.huawei.com/hedex/pages/EDOC1000081667DEE0811N/07/EDOC1000081667DEE0811N/07/resources/dc/dc_cfg_mac_1037.html?ft=0&fe=10&hib=10.3.4.3.7.3.1&id=dc_cfg_mac_1037&text=Configuring Global MAC Address Flapping Detection&docid=EDOC1000081667.

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owenchen
owenchen Created Apr 6, 2018 08:54:22

Managed to find the root cause of it .
It the NDP protocol
disable NDP protocols stop the Mac-Flapping issue.
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venkatACT
venkatACT Created May 23, 2018 13:58:24 (0) (0)
where to disable NDP protocol cisco or huawei?  
venkatACT
venkatACT Reply venkatACT  Created May 23, 2018 14:32:07 (0) (0)
Thanks got it.  
owenchen
owenchen Created Apr 6, 2018 08:56:45

Posted by b00745015 at 2018-03-30 13:04 I think this mac-flap log belongs to a Cisco device Po it's a port-channel interface For Huawe ...
yes these log are retieved from the cisco switch
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venkatACT
venkatACT Created May 23, 2018 14:03:39

May 23 19:07:30: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.fc09.bcf9 in vlan 1 is flapping between port Po6+Efp1 and port Po2+Efp1

I am getting the same log in cisco device.
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DiegoXD
DiegoXD Created May 24, 2018 15:27:03

:)
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