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Cisco switch MAC flapping errors

Cisco switch MAC flapping errors

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zhuffines
New Contributor

‎01-09-2024 06:06 AM

We have a core Cisco 3850-24 SFP switch connected to 15+ closets with Extreme 5420Ms.  The Cisco 3850 is reporting flapping errors, but the port numbers keep changing.  Same MAC every time, but I can't track it down.  Any hints?

Jan 9 08:39:28: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/17 and port Te1/0/12
Jan 9 08:40:12: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/13 and port Te1/0/19
Jan 9 08:41:10: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/19 and port Te1/0/13
Jan 9 08:42:09: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/9 and port Te1/0/17
Jan 9 08:42:32: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/7 and port Te1/0/15
Jan 9 08:43:07: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/11 and port Te1/0/8
Jan 9 08:44:00: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/19 and port Te1/0/9
Jan 9 08:44:13: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/13 and port Te1/0/12
Jan 9 08:44:56: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/19 and port Te1/0/9
Jan 9 08:45:53: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/9 and port Te1/0/17
Jan 9 08:46:55: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/16 and port Te1/0/11
Jan 9 08:47:45: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/9 and port Te1/0/17
Jan 9 08:48:41: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/9 and port Te1/0/17
Jan 9 08:49:16: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/10 and port Te1/0/7
Jan 9 08:49:46: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/17 and port Te1/0/11
Jan 9 08:50:14: %SW_MATM-4-MACFLAP_NOTIF: Host 00e0.2b00.0001 in vlan 99 is flapping between port Te1/0/10 and port Te1/0/7

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zhuffines
New Contributor
In response to Robert_Zdzieblo

‎01-10-2024 08:47 AM

Thanks!  That looks like what we are dealing with.  I was looking XiQ and I don't see a way to disable EDP on specific ports.  Is the only option to disable it thru the CLI?

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GTM-P2G8KFN