[j-nsp] OSPF getting stuck in EXCHANGE

[senad palislamovic]

How are you verifing your OSPF packets.  From the
traceoptions or via tcpdump?  How do you know that
Cisco is resending them?  Do you actually have the
sniffer on the wire?

Which J model is this?  Is there only issue toward
this Cisco box, but all other adjecancies are up? 
Have you compared tcpdumps from UP with STUCK one? 
Can you email us the files.

/sp

--- Abhishek Verma <abhishekv.verma at gmail.com> wrote:

> We've already verified this and the MTU is the same
> on both ends.
> 
> On 7/8/06, Jared Gull <jmgull at yahoo.com> wrote:
> >
> > This is generally an MTU mismatch on the
> connecting
> > interfaces.
> >
> > --- Abhishek Verma <abhishekv.verma at gmail.com>
> wrote:
> >
> > > Hi,
> > >
> > > I am using Juniper version 7.3R3.6 and a C box.
> > >
> > > The network has around 10K OSPF LSAs. My problem
> is
> > > that the OSPF adjacency
> > > is not coming up and its getting stuck in the
> > > Exchange state on a Cisco. The
> > > Juniper receives a few DD packets without any
> > > problems and then suddenly
> > > misses a DD packet. The Cisco readvertises that,
> yet
> > > Juniper never recieves
> > > that and keeps advertising the missing DD
> packet. C
> > > continually resends it
> > > but the J box is never able to receive it.
> > >
> > > This works if i convert the area into stubby or
> NSSA
> > > as the DD exchange then
> > > is not so prolonged.
> > >
> > > Is this a known issue with Juniper and can
> something
> > > be done about this?
> > >
> > > Then sometimes i have also seen negative
> sequence
> > > numbers in the DD exchange
> > > from Juniper.
> > >
> > > Any clues anybody?
> > >
> > > Thanks,
> > > Abhishek
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