I am noticing that our Dell N4000 series switch connected to a stack of Cisco devices is constantly attempting to change spanning tree topology. The Cisco switch is our Internet connection and a fiber loop that connects to our other offices.
My logs are:
<189> Nov 6 09:34:36 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7355 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 09:34:35 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7354 %% Spanning Tree Topology Change: 0, Unit: 1
<189> Nov 6 09:34:35 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7353 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 09:28:26 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7352 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 09:28:25 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7351 %% Spanning Tree Topology Change: 0, Unit: 1
<189> Nov 6 09:28:25 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7350 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 08:38:20 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7347 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 08:38:19 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7346 %% Spanning Tree Topology Change: 0, Unit: 1
<189> Nov 6 08:38:19 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7345 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
<189> Nov 6 08:29:16 SW105-1 TRAPMGR[dot1s_task]: traputil.c(777) 7344 %% Spanning Tree Topology Change Received: MSTID: 0 Te1/0/1
The only config on the port is:
switchport mode general
switchport general pvid 10
switchport general allowed vlan add 10
Would it be best to enable tcn guard and bpdu filter on this port?
