2 cisco catalyst 2900 connectec and 2 bridges connection.

Yes, STP is one way to set it up. But second link is not used when first one is available.

I *think* (I am newbie, so just from browsing manuals) that you can also combine multiple ports into a single trunk between switches, which gives you added speed between the switches. (but I guess would not provide redundancy in case one fails).

Perhaps an expert can confirm if this is possible.

Hi Jarek,

It all depends on how the current link ports are defined, some port config info might be useful... My preference would be to use standard trunk port settings, then just duplicate the trunks and things should automatically sort themselves out (assuming there is nothing special set on the existing setup). It could also be done using Access Ports, but Trunks would be better.

Using trunks there should be no need to fiddle with Priorities all traffic would be split equally, however one possible "gotcha" would be if the interface status for Radio link that went DOWN, did not change to DOWN on the Switch port. Thats the only way the switch can determine if the link is present or not. I also hope that your Radio bandwidth at least matches your LAN bandwidth...

Cheers................pk.