I have about 150 routers in our network, we have been experiencing in the last several months only, the router will stop passing data. All are ospf routed and then we can see them in the neighbors, but you can not access them via winbox or telnet. When you do get a mac telent to accept the user and password all it says is connected.. no other command lines to use. Any one else having this issues or seen other post on this problem.. All are NOT using same FW so I feel it is not FW related.
Have you analyzed the logs? Any entries there?
If I were the admin of that network I would immediately initiate the security protocols. Something big seems to be fishy there.
If you post a simple drawing of your network topology with a short description then people can try to help.
I think I personally would throw out that OSPF completely and instead use static routing with some careful planning.
The logs show only error, was rebooted without proper shutdown. There is not a security issue, I have plenty of firewall and rules in place, But with a network as large as ours, it is a almost 2 hour drive to some of theses locations just to reboot the router, and it starts back working.. may work a week, may work a day, may work 2 months. nothing systematic or in the logs for me to catch. I have even set our watchdog to our DNS and it will not reboot,BUT the customers coming from the routers have NO service and our PtP and Access Points show off line, If you was looking at this from a Dude or UNMS platform, it looks like the power is off to a site, when In fact it is not.. Just a non responsive RB2011 or 4011. Some have NEVER done this and some do several times or more. I wish I could share more, but I really am lost as to what to type here.
It looks like the RB’s are freezing?
Change the Connection Tracking to “No” as you can read in the 3rd paragraph of this post:
http://forum.mikrotik.com/t/routerboard-ccr1072-watchdog-reboot/138653/1
It work for my RB4011