bridge interfaces

RouterOS General
1

Hi guys. I have a problem setting up bridge interfaces in MT.

I’ll start with explaining the topology:

| s w i t c h | ----- | LAN |-----[ PC ] 192.168.1.1

| eth0
MT1=(wir ~ ~ ~ ~ wir)=MT2
192.168.1.2

My idea and goal is to bridge eth0 and “wir” interfaces of MT1 so it is a transparent device and as a result to have direct connection between PC and MT2. However, if I bridge eth0 and wir interfaces of MT1 - the switch and a small part of the LAN stops to function untill I “unbridge” the interfaces and reboot the switch. (Both wireless cards of the MTs are atheros)

10x in advance for any help and ideas where the problem is.

2

“stops to function” is not very descriptive.

The radio on MT1 must not be in station mode for use in a bridge (its stated somewhere in the wireless manual)

It might be better using EoIP between the eth-interfaces of the MTs (or WDS) for a transparent bridge in your scenario.

3

You are effectivly creating a loop and the switch detects this.

4

@sten: where did you see a loop? i can’t, sorry. sounds like one, though.
if a switch with STP is in use, it should close only the looping-port and show this as well.

5

Not all switches follow 802.1D specification. Others employ dirty tricks or just undefined behaviour.