ospf: how bird select best route

[Ondrej Zajicek]

On Fri, Jul 11, 2014 at 08:53:32AM +0200, Piotr wrote:
> router 1.1.1.5 it's server with bird
> router 1.1.1.9 it's juniper with metric 70
> router 1.1.1.14 it's juniper with metric 30
>
>         network 1.1.1.0/28
>                 dr 1.1.1.9
>                 distance 10
>                 router 1.1.1.9
>                 router 1.1.1.5

This seems like NBMA related problem - perhaps 1.1.1.9 and 1.1.1.14 are
not configured as neighbors to each other (not in BIRD but in their
configurations). Therefore 1.1.1.9 does not include 1.1.1.14 as a
neighbor in Net-LSA, and 1.1.1.14 is not reachable. When 1.1.1.9
is removed, another router (probably 1.1.1.14) is elected as DR
and 1.1.1.14 became reachable.

-- 
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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