From: Mike Stout (michaelgstout@gmail.com)
Date: Tue Jan 15 2008 - 04:07:03 ARST
I've had luck issuing the ip ospf mtu-ignore command on the interface.
I thought it was an MTU missmatch.
Thanks for the Link. I will take a look.
On Jan 13, 2008 5:45 AM, Bob Sinclair <bob@bobsinclair.net> wrote:
> Ernst Pelser wrote:
> > If I configure FRF.12 on R4 is breaks the neigborship. Now I
> > understand that I need to configure both R4 and R5 but I would just like
> to
> > understand why this happens when I configure just one side.
> >
> >
> Ernst,
>
> Apparently your fragment size is so small that the ospf hellos are
> getting fragmented. When FRF.12 fragments a packet it changes the
> frame-relay header to allow for a sequence number that will allow
> re-assembly of the original packet. If FRF.12 is not configured on the
> receiving side it does not know how to read this redesigned frame-relay
> header. Here is a link to a presentation that shows the change in the
> frame-relay header due to FRF.12 fragmentation.
>
> http://www.ipmplsforum.org/frame/tutorials/vofr/vofr4.pdf
>
> Hth,
>
>
> --
>
>
> Bob Sinclair CCIE 10427 CCSI 30427
> www.netmasterclass.net
>
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