VLAN flapping - Cisco Community
May 14, 2016 · Hi I am facing the following massages at my device. May 10 02:00:39.793: %SW_MATM-4-MACFLAP_NOTIF: Host 0090.e846.98ee in vlan 105 is flapping between port …
Best Practices for Troubleshooting STP Flapping on Access Switches
Sep 30, 2025 · Hi Cisco Community, I wanted to ask about your approaches to troubleshoot Spanning Tree Protocol (STP) flapping in enterprise networks. In some cases, I’ve seen ports constantly …
VLAN flapping between ports - Cisco Community
Feb 13, 2013 · Hi, I am reciveing below logs, what should be the main causes ? , thanx. switch-A#sh logging Syslog logging: enabled (0 messages dropped, 1 messages rate-limited, 885 flushes, 0 …
MAC Flapping - Cisco Community
Aug 27, 2019 · Hola Solo para estar claros con esto: tan solo hacemos una cascada y no requerimos de STP. ¿Tienes deshabilitado el STP? Eso no es recomendable. Ahora bien como menciona …
cloud monitored C9500-48Y4C MAC Flapping - The Meraki Community
Oct 27, 2025 · There is device tracking on trunk ports. it is my understanding that device tracking on trunk ports causes MAC flapping errors. I tried removing the device tracking from the trunk ports but …
Meraki RSTP Flapping - Cisco Community
Nov 7, 2025 · I've got several Meraki switches and randomly on almost all ports are changing from Designated to Disabled and back. Things connected to those ports vary. Phones, PC's, Printers, …
MAC address flappingイベントログについて - The Meraki Community
Apr 20, 2023 · 本記事ではMAC Flap Detection機能の検出条件及び、実際にL2ループが発生したいない場合においても 本MAC address flappingログが記録される例をご紹介させていただきます。 MAC …
Catalyst 9200 switch port flapping (up/down, not MAC flaps)
Oct 21, 2024 · Start a conversation Cisco Community Technology and Support Networking Switching Catalyst 9200 switch port flapping (up/down, not MAC flaps) | Subscribe |
Meraki MS and WLAN APs causing mac-flapping events
Jul 12, 2022 · If you have Cisco Classic with APs in Flexconnect Mode, you'll see the exact same thing, and on Cisco Classic the "fix" here is to simply suppres the MAC flapping event.
Solved: Port Flapping Issue - Cisco Community
Dec 3, 2019 · Solved: Hi there, According to syslog, one port of one of our switches keeps flapping. Goes up and down. The end device of the port is a sharp printer. I tried to change cable and hard …