From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sun Nov 04 2007 - 07:00:35 ART
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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