Thanks for all responses, i fixed my BGP rules according to them. Sadly this did not fix the problem. Also, it's possible that ISP2 is sending routes with 0:0 community, would it be save to set a custom one, eg their AS number in input filter? Or are there any rules for that? I have 'Redistribute Ot...

"sounds like ISP1 has prefix-limit, and CCR starts to announce all ISP2 routes to ISP1" It seems that's exactly what is happening. I have filters set up but it doesn't seem they work properly. Maybe i'm doing something incorrectly? Full list of filters below. There is one BGP instance with...

Hi I have system with two Mikrotik CCR routers and three ISPs with full BGP - R1 connected to first router, two to R2. Routers have session IBGP between them. The issue is - when i enable BGP session to second ISP on R2 first BGP session drops connection with message 'cease: prefix limit reached' in...