there are 2 routers-A & B.Both are connected via an ethernet link running ospf on each of the link terminating interfaces.Router B shows in init/drother when checked from Router A.Interface on A that connects to B is up/up & ISP has confirmed the link to be fine.B is not reachable from A.
Everything else except physical link at B are checked.Is it possible that physical cable connectivity loose can cause this issue, also is there a way we can check on A for a loop from ISP if they give from B.Not sure if this is possible in Ethernet networks, if yes how & what to check when they give loop.
Another thing, B is visible in cdp tables of router A.
Is there anyother cause for this issue or anything to check?
Thanks in advance!