From: Uchil Perera (uchil.groupstudy@yahoo.com)
Date: Sun Nov 04 2007 - 15:51:54 ART
Hi,
Enabling "ip ospf mtu-ignore" on the router interface will do the trick
Regards
Uchil
CCIE # 18536
Tarun Pahuja <pahujat@gmail.com> wrote:
Can you ping from one interface to the other(.1->.7)? please correct
the network statement under the ospf process.
Tarun
On 11/4/07, Joseph Brunner wrote:
> A 3560 (at least mine, running C3560 Software (C3560-ADVIPSERVICESK9-M),
> Version 12.2(40)SE,) defaults to 1500 mtu on the physical interfaces in
> routed mode, and the svi's.
>
> So you shouldn't need ip ospf mtu-ignore... when I'm running ospf with a
> 3550 I use mtu ignore on the routers only and it comes up fine. The 3550's
> default mtu to 1504, why we get stuck in exstart.
>
> Post the output of 'debug ip ospf adj' on both...
>
> I had to say that before "Evil" Scott Morris showed up and pounced on you
> for not doing that by default...
>
> -Joe
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of CCIE
> Sent: Sunday, November 04, 2007 3:27 AM
> To: ccielab@groupstudy.com
> Subject: strange OSPF neighbor relationship
>
> I just these configurations of a 3560 and 2811, nothing more at all
>
>
>
> 3560 f0/1 ==> 2811 f0/0
>
>
>
> ip routing
>
> int f0/1
>
> no switchport
>
> no shut
>
> ip ospf mtu-ignore
>
> ip add 132.1.17.7 255.255.255.0
>
> router ospf 1
>
> net 0.0.0.0 255.255.255.255 area 0
>
>
>
>
>
>
>
> enable
>
> conf t
>
> ip routing
>
> int f0/0
>
> no shut
>
> ip add 132.1.17.1 255.255.255.0
>
> router ospf 1
>
> net 0.0.0.0 255.255.255.255 area 0
>
>
>
> but the neighbor relation between them doesn't exceed the EXSTART????
>
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