OSPF interfaces issue

Ondrej Zajicek santiago at crfreenet.org
Sat Oct 10 12:15:34 CEST 2015

On Thu, Oct 08, 2015 at 06:48:19PM -0400, Jigar Mehta wrote:
> Hi, I wanted some help regarding a problem I was seeing when i had multiple
> interfaces with same ip address . I have multiple routing domains setup so
> i have valid cases to have same ip address on different interfaces (so i
> have seperate routing tables for each instance). When  I do a show ospf
> interface for each ospf protocol instance, it seems to correctly dump the
> interface . When I did a packet capture, it shows incoming/outgoing hello
> packets, but when I enabled debug, i can see that it never prints a "hello
> packet received" message(but prints "hello packet sent") although, i can
> see the peer sending ospf hello packets.
> This seems to be a problem with only one instance and not both.


I don't know. I just tested it, works for me. Does the other side see
sent hello packets? (Should be in Init state.) If you disable the other
interface with the same address, does the problematic iface start to work?

Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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