Spanning-tree with non-STP edge.

[stnz]

Well, somebody ate the BPDUs then, because the switch looped.

Either the 1810G did not pass them through, or.. They were never sent? Should the 2948 send BPDUs to an edge port?

Of course the previously connected port was automatically selected as an edge port because it had the default setting of auto-edge enabled and it was only connected to the 1810G.

[Richard Brodie_1]

It should send on all the ports, unless you have bpdu-filter on them. It should be fairly easy to check with a sniifer such as Wireshark whether BPDUs traverse the 1810G.

[stnz]

Ok.. Well, something went wrong then. Either the 1810G did not pass the BPDUs through or something strange happened. I'm not an STP expert, but to me that also looked like a correct setup assuming the 1810G would pass the BPDUs through.

I have to see if I have a couple of extra switches to test the setup, not exactly willing to re-test it with the production network even with the ports now set as forced non-edge.. :)