STP - Stopped receiving BPDUs with loop guard enabled

[Sweemz]

Hi All,

I hope we are well.

I’ve recently inherited a Cisco Meraki network following an acquisition and have noticed some alerts.

The network Consists of:

2 x MX105 in HA config.

5 x MS130-48P 

4 x CW9166I

I've documented the network as best as possible.. (minus the access points) will re-review tomorrow and update asap.

DUG00-SW01 Port 51 

DUG00-SW03 Port 50

The affected ports seem to be alternate uplink ports, so the network is still operational. I’d just like to understand the issue and get the network’s RAG status back to healthy.

Any thoughts on the best place to start troubleshooting?

Thanks in advance - let me know if you need more information!

[RWelch]

I realize you mentioned inheriting this network but the device health notice indicates SW01 and SW03 error notices yet the lower images you share indicate SW04 and the port descriptions don’t seem to jive.  Seems like something doesn't quite add up.

[RWelch]

Can you share a screen capture of the topology from the meraki dashboard to see what that shows....I'm curious to see if that might reveal more insight.  Not meant as critical at / toward you....just tried to understand the above and I looked at it like 10 times.

[RaphaelL]

APs do not participate to the STP topology so that shouldn't matter