Hello, I’m dealing with a very estrange issue with OSPF in my network.
I have a routed network with many mkt routers running OSPF, one of those routers is our border router.
Due increasing traffic we decided to change the border router with a more powerfull one (RB1100AHx2), actually an RB1200.
I have configured manually the new router with the same configuration as the old that will be replaced, and then I switched the old router with the new one.
After the change the problems begins, the new router don’t know any route published in the OSPF area.
When I see this I start reviewing OSFP configuration: Instance, Instance ID, Network, Area, etc. All is well configured and the new router see all the neighbors, but no routes are learned by the new router.
After one hour of checking and rechecking all configuration I decided to rollback the change, backing again the old router in production.
After the change, surprise!, the old router manifest the same problem, no routes was learned!, I see all my neighbors, but no routes are learned with my border router.
After this I decided to see the others routers in the ospf area, and here I confirm that the other routers don’t see my border router in the neighbors list.
Of course I checked visibility between my border router and the others, all is ok, they are in the same LAN, ip connectivity is ok, I reseted the switch (assuming a bad learned mac due the router swap), nothing happens, the border router see all the neighbors but the rest of the routers don’t see the border router in the neighbors list.
I already rebooted the routers in the area, the border router, the switch, etc with no results.
Now I configured all my routes statically in the border router and I’m running in this way.
Anyone can give me a clue ?, I’m not an OSPF expert, but I have my network running in this way from a long time without problems.
Regards,
Jack.-