Re: OSPF Weird Issue

Why are you deleting the neighbor command?

If you remove the neighbor command and the frame-relay mappings
does not support broadcast communication, you are dropping packets
causing adjacencies to reset.

HTH,

On Mon, Jun 13, 2011 at 10:11 AM, Routing Freak <routingfreak_at_gmail.com>wrote:

> HI muhammad,
> I used ospf over FR physial interface.
> So by default everything is nonbroadcast network type
> So i used neighbor command for unicast hello packets, so it forms
> neighborship but when i removed the neighbor command ,still the
> neighborship
> is up and i see some messages that neighbor is flapping and i get this
> error
> OSPF Nonneighbor,Sending hellp packets to unknown neighbor
>
>
>
>
> On Mon, Jun 13, 2011 at 12:21 PM, muhammad adnan <taurusadnan19_at_gmail.com
> >wrote:
>
> > Dear did you configure correct ospf network type? ip ospf network
> > point-to-multi nonbroa
> >
> >
> > please post your configration.....
> >
> > Thanks a lot
> > Muhammad Adnan
> >
> >
> > On Mon, Jun 13, 2011 at 11:07 AM, Routing Freak <routingfreak_at_gmail.com
> >wrote:
> >
> >> Dude ,The nieghbor is in nonbradcast mode and i have given neighbor
> >> statements to all the neighbors
> >> thats all the command i have configured
> >>
> >>
> >> On Mon, Jun 13, 2011 at 11:35 AM, Manouchehr Omari <
> >> manouchehr1979_at_gmail.com
> >> > wrote:
> >>
> >> >
> >> >
> >> > Can you just paste the config of those 3 routers.
> >> >
> >> > Thanks,
> >> > Manny
> >> >
> >> >
> >> > On Mon, Jun 13, 2011 at 1:58 AM, Routing Freak <
> routingfreak_at_gmail.com
> >> >wrote:
> >> >
> >> >> Hi all
> >> >> I got this log message when i m doing OSPF labs
> >> >>
> >> >> Consider a fully-meshed frame-relay network with three routers. The
> >> three
> >> >> routers are connected to the the frame relay cloud with the IP
> >> addresses
> >> >> 10.10.10.1, 10.10.10.2 and 10.10.10.3 respectively. However, the
> >> neighbor
> >> >> relationship on all the routers constantly keeps getting reset with
> >> >> messages
> >> >> like the following -
> >> >>
> >> >>
> >> >> *Mar 4 16:10:01.333: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.3 on
> >> >> Serial2 from LOADING to FULL, Loading Done
> >> >> *Mar 4 16:10:05.261: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.3 on
> >> >> Serial2 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
> >> >> *Mar 4 16:10:05.521: %OSPF-4-NONEIGHBOR: Received database
> >> >> description from unknown neighbor 10.10.10.3
> >> >> *Mar 4 16:10:08.813: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.2 on
> >> >> Serial2 from EXSTART to DOWN, Neighbor Down: Adjacency forced to
> reset
> >> >> *Mar 4 16:10:11.485: %OSPF-4-NONEIGHBOR: Received database
> >> >> description from unknown neighbor 10.10.10.2
> >> >> *Mar 4 16:10:12.593: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.3 on
> >> >> Serial2 from LOADING to FULL, Loading Done
> >> >> *Mar 4 16:10:14.905: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.3 on
> >> >> Serial2 from FULL to DOWN, Neighbor Down: Adjacency forced to reset
> >> >> *Mar 4 16:10:19.013: %OSPF-5-ADJCHG: Process 100, Nbr 10.10.10.2 on
> >> >> Serial2 from EXCHANGE to DOWN, Neighbor Down: Adjacency forced to
> >> >> reset
> >> >>
> >> >>
> >> >> Given just this information, can you determine what the problem might
> >> be
> >> >> here?
> >> >>
> >> >> What is meant by OSPF NonNeighbor and unknown neighbor?
> >> >>
> >> >>
> >> >> Blogs and organic groups at http://www.ccie.net
> >> >>
> >> >>
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>

-- 
Rares Donca
CCIE #28430 (R&S)
Blogs and organic groups at http://www.ccie.net