[nsp] OSPF problems on 2600s

From: Steven Saner (ssaner@southwind.net)
Date: Fri Aug 04 2000 - 13:08:45 EDT

Hi:

I am trying to setup some OSPF between a core router (7206) and some
smaller edge routers. These include some 2500 and 2600 series
routers. All of the 2500s work fine, but I am having trouble with 5
out of 6 2600s. Here is a list of the model number and IOS rev on each

2611 11.3(4)T1 works

2610 12.0(10) does not work
2611 12.0(4)T does not work
2611 12.0(3) does not work
2611 12.0(4)T does not work
2611 12.0(3) does not work

The problem is that as the OSPF is trying to get established between
the core router and the edge router, one of them gets stuck in the
EXSTART state and the other in the EXCHANGE state.

Obviously one of the differences between the one that works and the
others in the working one is an 11.3 version while the others are
12.0. Another difference is that the one that works is using a
point-to-point T1 serial link (HDLC). The ones that do not work are
all Frame-ATM with < T1 bandwidth. However, some of the 2500s that do
work are on similar links.

Does anyone know, or have ideas of why this is?

Thanks 

-- 
==================================================================
Steven Saner                            SouthWind Internet Access, Inc.
ssaner@southwind.net                    Systems/Network Administrator
http://www2.southwind.net/~ssaner       http://www.southwind.net
                                        263-7963 Wichita  (800)525-7963

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