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- About Thagaman
Thagaman
Comes here often
Member since May 31, 2019
01-17-2022
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01-17-2022
08:08 AM
thanks for the input, appreciate the help. Meraki's website suggested configuration with a 3850 is LACP. Do AP's do PaGp?
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01-17-2022
07:39 AM
Thanks for the suggestion, I am planning on removing the port aggregation from the MR52, and remove LACP from the switch.
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01-17-2022
07:38 AM
The AP go from my Cisco 3850 to my Nexus 9k, and the MAC address I see in the logs is the MAC address of the MR52 AP.
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01-14-2022
06:46 AM
I see flapping in 3850 and Nexus core switch. 2022 Jan 10 18:33:04 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel120 on VLAN0126. 2022 Jan 10 18:33:04 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel130 on VLAN0254. 2022 Jan 10 18:33:05 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0112. 2022 Jan 10 18:33:05 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0116. 2022 Jan 10 18:33:05 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0071. 2022 Jan 10 18:33:05 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0072. 2022 Jan 10 18:33:05 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0076. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0091. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_DETECTED: Dispute detected on port port-channel110 on VLAN0081. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0071. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0072. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0076. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0081. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0091. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0112. 2022 Jan 10 18:33:06 HQDC-N5672-A %STP-2-DISPUTE_CLEARED: Dispute resolved for port port-channel110 on VLAN0116.
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01-13-2022
03:24 PM
I have read other posts about MAC flapping, but there was nobody in the building, and no mac where roaming between AP's, and the MAC address is my AP.
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01-13-2022
03:22 PM
Second attempt failed to upgrade MR52's, packet loss in AP's and slowness in switch after upgrade with MAC Flapping. Everything works great on 25.13, but when I upgrade to 28.5, AP's show 100% loss when I ping them, and my Cisco 3850 switch runs super sluggish. Tech Support helped me rollback to 25.13, but how to I get to a stable release? The moment the AP's upgraded, and rebooted. I see this in my Cisco 3850's, these mac flapping logs, and the MAC address is my MR52's. Jan 10 18:26:08.134 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.2cb0 in vlan 72 is flapping between port Po24 and port Po1 Jan 10 18:26:08.571 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.30e2 in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:09.061 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:11.991 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.22a0 in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:14.350 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.2cb0 in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:14.373 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po1 and port Po22 Jan 10 18:26:14.375 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.30e2 in vlan 72 is flapping between port Po1 and port Po22 Jan 10 18:26:15.415 MST: %PLATFORM_MATM-4-QUEUE_OVERLIMIT: MATM dropped learn cache batch messages as queue limit has reached. Jan 10 18:26:16.851 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.34f6 in vlan 72 is flapping between port Po1 and port Po22 Jan 10 18:26:22.065 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357c in vlan 72 is flapping between port Po22 and port Po24 Jan 10 18:26:29.389 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po22 and port Po24 Jan 10 18:26:29.443 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.2cb0 in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:29.622 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.34f6 in vlan 72 is flapping between port Po22 and port Po1 Jan 10 18:26:41.045 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po24 and port Po22 Jan 10 18:26:42.033 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po22 and port Po24 Jan 10 18:26:42.842 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.22a0 in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:44.041 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.32de in vlan 72 is flapping between port Po1 and port Po24 Jan 10 18:26:44.421 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357a in vlan 72 is flapping between port Po22 and port Po24 Jan 10 18:26:44.579 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.2cb0 in vlan 72 is flapping between port Po24 and port Po22 Jan 10 18:26:44.615 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.34f6 in vlan 72 is flapping between port Po22 and port Po24 Jan 10 18:26:45.296 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357c in vlan 72 is flapping between port Po24 and port Po1 Jan 10 18:26:47.057 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.32de in vlan 72 is flapping between port Po22 and port Po1 Jan 10 18:26:49.256 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.22a0 in vlan 72 is flapping between port Po24 and port Po1 Jan 10 18:26:53.641 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.3506 in vlan 72 is flapping between port Po22 and port Po1 Jan 10 18:26:59.503 MST: %SW_MATM-4-MACFLAP_NOTIF: Host e055.3dc0.357c in vlan 72 is flapping between port Po1 and port Po24
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