We are having a very strange issue with a number of SMs.
We use PPPoE from client routers across bridged SMs. The issue presented as PPPoE sessions failing to establish. I have traced this to pppoe-discovery packets not being received from affected client routers.
There are only two entries in the bridge table of affected SMs (NI1-Eth0Mgmt and NI2-Priv-RF-Mgmt)
Occassionally Eth0 pops up with a Physical address of 000000000001, then drops off again.
Initially this was on two clients on one base station, it is now affecting approx 14 clients on 3 base stations, all on the same site.
Base stations are running 15.1.3, SMs are mostly running 15.1.3 also, I have tried upgrading some to 15.1.5 and 15.2 but the issue persists. Everything has been rebooted at various points.
Has anyone seen this issue before / does anyone know how to resolve?