I am posting to this forum because I have exhausted all other alternatives.
I am having major problems installing my mikrotik wireless equipment. I bought four routerboard 200 systems for my school to create two backbone links on my campus. We have a main building that houses or server and Internet connection and we want to connect two other buildings to the main building. However I have been unable to setup these routers to function as a bridge between the two locations and the main building. I have gone true all the manuals available done all the howtos I found. I even tried to setup an Eoip connection with pptp using the following this tutorial (http://www.mikrotik.com/docs/ros/2.9/interface/eoip) in this case the pptp connection restarted every 30s and no traffic was sent form one location to the other.
I have even upgraded the system to the latest OS. However I have been unsuccessful in every attempt to configure the system. I bought the equipment because I was told that it was among the best but now all I seem to have is a huge paper weight for a router and antennas up as decorations. I am stomped, I need to get it working, my school is strapped for finance and we made a sacrifice to purchase and import this equipment. Please can anyone help me. My school and my students would appreciate it.
Thanks in advance and sorry for the long post.
So what didn’t work? If you got a pptp tunnel up for even a second you must have gotten the link to work right? What problems did you have?
Sam
From what I read, I understood this procedure was supposed to create a transparent bridge between the two locations right?
Well the pptp tunnel is established for 30s at a time, but during the time it is connected no traffic can be sent from one location to the other. When I try to ping a machine on the other side of the bridge I get a response like “Request timed out” and after 30s the connection would be dropped and the routers would start dialling again to establish another connection. This happens for both sets of routers. I am puzzled. 
I hope this explains the problem clear enough.
Do you need eoip? What about the transparent bridging on the wiki? http://wiki.mikrotik.com/wiki/Transparently_Bridge_two_Networks
I have a schools network setup in just that way and it works fine.
The MTs are setup in AP-Bridge with WDS on one side and the other side is set to Station-wds.
Then I bridge the ether and wds interface to make it a transparent bridge.
I don’t do tunnels because it’s just one more thing to go wrong.
Thanks all, I finally got it to work with wds.