Re: OSPF Weird Issue

Hey Roy
Here it is not Hub n spoke network.Just 4 routers are in Non broadcast
domain and each has frame relay mapping statement to each other .So there is
no problem of reachability .And also there is no invere arp problem ,
because i disabled the inverse arp also.Still the problem presists

I dont have the configs file
I just didnt save my configs
Just try to do a NBMA network in OSPF

On Mon, Jun 13, 2011 at 2:50 PM, Roy Khan <roykhan123_at_hotmail.com> wrote:

>
> Hi
>
> NBMA mode send hello as unicast and it need the neighbor statement and also
> perform DR/BDR election.
> also it require layer 3 to layer 2 resolution in FR.
> Configure the DR which have full connectivity to the others routers in your
> case it should me hub. the spoke cannt be
> DR becuase it does not have full layer 2 connectivity with each other. manually
> set the OSPF pri to zero.
> Disable inverse arp in FR. and also HUB have to FR statement point to the
> spoke and spoke point to hub
> first configure the FR and check and test and then configure the OSPF.
>
> > Date: Mon, 13 Jun 2011 11:28:29 +0530
> > Subject: OSPF Weird Issue
> > From: routingfreak_at_gmail.com
> > To: ccielab_at_groupstudy.com
>
> >
> > 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
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Mon Jun 13 2011 - 15:26:05 ART