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From: Acee Lindem (acee_at_REDBACK.COM)
Date: Thu Dec 12 2002 - 10:26:44 CST
Rajesh G wrote:
> When ospf is enabled on an interface in which we already
> have valid DR and BDR for the network, we face the following
> problem. As soon as the interface comes up a router LSA is
> generated stating the network as stub (as we don't have knowledge
> about other routers in the n/w). After some time we get a hello
> packet from a neighbor giving us the DR and BDR for the n/w which
> we accept. Here we do not re-build our own router LSA. Even if we
> run the DR election and dont find any change in the DR status, we
> still don't rebuild our router LSA. So we advertise the n/w as
> stub link, till the refresh interval.
> What could be the possible solution to avoid this problem.
> My guess is that we should not originate our router LSA till we
> are sure about the nature of the network (either our wait timer
> expires or we get a Hello with a valid DR and BDR on the n/w). Is
> this correct? please give your inputs.
Rajesh - don't delay origination. You should re-originate your
router LSA when you go to FULL state with the DR. Look at section
12.4 in RFC 2328.