RE: OSPF learned routes through the same neighbors with two

From: Trevor Angus (Trevor.Angus@T-Systems.co.za)
Date: Tue Jun 24 2008 - 05:50:59 ART


It sounds like you have multiple links to the 6500, perhaps hosting the
DMZ ports there. It sounds (from the limited info in your email) that
the OSPF process on each device is configured with multiple network
statements and ospf is trying to setup neighbourship via each network
defined. Try having only network statements for the link to each
neighbour and redistribute connected into OSPF on each.

Trevor
CCIE 19552
-----Original Message-----
From: ISolveSystems [mailto:support@isolvesystems.com]
Sent: 24 June 2008 04:43 AM
To: Cisco certification; Cisco certification
Subject: OSPF learned routes through the same neighbors with two links

Hello Expert,
ASA and FWSM are neighbor via INSIDE and DMZ interfaces in the same
area.

FWSM is the DR for INSIDE interface.
They are 2WAY/DROTHER on the DMZ interface.

I am finding that ASA is learning Interarea routes through DMZ
interface;
External routes through INSIDE interface from FWSM.

What determined what routes are learned from which interface?

Thanks.

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