For various reasons (technical and business) I have a Mikrotik router with two instances of "bridge". Each instance is running STP and I want to connect the two instances together. There doesn't seem to be an easy way to do this. The only one I can figure out without resorting to a MetaRouter is to define an EOIP tunnel between the two instances.

I thought that two Virtual Ethernets (one connected to each bridge instance) would work but there is no way to connect the two interfaces other than via a MetaRouter

Anyone else have any ideas?

connecting two eoip-tunnel-interfaces within one router simply doesn't work. I already tried that.
Currently Metarouter seems to be the only option to connect two bridges within one router.
Some time ago I also needed to cennect two independent RSTP-bridges within one router for reasons of failover and simple L2-load-sharing.

For various reasons (technical and business) I have a Mikrotik router with two instances of "bridge". Each instance is running STP and I want to connect the two instances together. There doesn't seem to be an easy way to do this. The only one I can figure out without resorting to a MetaRouter is to define an EOIP tunnel between the two instances.

I thought that two Virtual Ethernets (one connected to each bridge instance) would work but there is no way to connect the two interfaces other than via a MetaRouter

Anyone else have any ideas?

What do you exactly mean by connecting them together. And what are the IP ranges used on both bridges.
If your goal is to have communication between devices connected to either bridge, I would assume that routing is needed.
Can you give us some more info?

just imagine that routing is no option here. just stay on the topic.
also IP-adressing is not of concern here, cause it's simply Layer-2.

if you want to connect two bridges in routeros the most simple solution is to add one usnused ethernet-port to each bridge and connect these two ports using a short patch-cable.
(the other solution is to use metarouter as replacement for the patch-cable)

this setup allows you to 'simulate' two independent RSTP-Bridges. (In other words you can avoid using two routerboards/switches)

the benefit of such setup is, that you can simultaneously transmit traffic over two redundant links incoming/outgoing to the routerboard while still maintaining full redundancy and a simple configuration.
And if one link fails traffic will be switched over the link between the two bridges.

As someone mentioned, this is an L2 problem. It is two STP bridges that need connecting. Unfortunately, this is a small box (RB750UP) and all the hardware ports are taken. With the failure of EOIP within the same box, I guess that leaves a metarouter.

Hello.
No progress on this since then?
Why can't we simply introduce a virtual LAN cable?
We are now on ROS v7.8.