Capsman Issues

RouterOS General
1

Hi All,
I have a site with 2 dslam and 30 hapac-lites in the rooms. I am getting a lot of the the following:

Apr/05/2022 15:23:50 bridge,stp VVI-78A90899xxxx-2 forwarding
Apr/05/2022 15:24:03 bridge,stp VVI-78A908FBxxxx-1 learning
Apr/05/2022 15:24:03 bridge,stp VVI-78A908FBxxxx-1 forwarding
Apr/05/2022 15:24:07 bridge,stp MikroTik-3 learning
Apr/05/2022 15:24:07 bridge,stp MikroTik-3 forwarding
Apr/05/2022 15:24:24 bridge,stp VVI-78A908Exxxx-1 learning
Apr/05/2022 15:24:24 bridge,stp VVI-78A908E9xxxx-1 forwarding
Apr/05/2022 15:24:27 bridge,stp VVI-78A90887xxxx-2 learning
Apr/05/2022 15:24:27 bridge,stp VVI-78A90887xxxx-2 forwarding
Apr/05/2022 15:25:34 bridge,stp VVI-78A90887xxxx-2 learning
Apr/05/2022 15:25:34 bridge,stp VVI-78A90887xxxx-2 forwarding
Apr/05/2022 15:26:07 bridge,stp VVI-78A908CAxxxx-2 learning
Apr/05/2022 15:26:07 bridge,stp VVI-78A908CAxxxx-2 forwarding
Apr/05/2022 15:26:27 bridge,stp MikroTik-3 learning
Apr/05/2022 15:26:27 bridge,stp MikroTik-3 forwarding
Apr/05/2022 15:26:46 bridge,stp VVI-78A908CAxxxx-1 learning
Apr/05/2022 15:26:46 bridge,stp VVI-78A908CAxxxx-1 forwarding
Apr/05/2022 15:27:56 bridge,stp MikroTik-6 learning
Apr/05/2022 15:27:56 bridge,stp MikroTik-6 forwarding

Pretty much all the devices are doing it.

I have had issues with caps dropping off but it is has been fixed.


Bill

2

Why do you call it “CAPsMAN” issues, as the log messages are about STP (spanning tree protocol) transitions?

What is enabled on the bridge under the STP tab of the bridge? STP, RSTP , MSTP ???
Be aware of the limitations of STP. Slow convergence.
Default Max message age in MT is 20. How are the devices connected? One long chain (>20 devices) ? Any loops?
Where is the root bridge ? Is there a device added or removed (restarted), causing a STP root bridge election?