From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Thu Sep 07 2006 - 23:57:42 ART
How about running HSRP between B and C and track the Serial interfaces
to router A? Then, do straight redistribution and set the AD for
externals in Eigrp to just under 110 (preferring the EIGRP route (do
this on B and C). Let me know how that works for you.
Dave Schulz,
Email: dschulz@dpsciences.com
-----Original Message-----
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Sent: Thursday, September 07, 2006 12:00 AM
To: ccielab@groupstudy.com
Subject: Tough one
Three routers A, B, C
_____________
/ A \
/ \
| |
\ ospf 0 /
\ /
\ B C /
-----------
| EIGRP 50 |
-----------
Router A - S0 in ospf area 0
Router B - S0 in ospf area 0
Router C - S0 in ospf area 0
Router B - E0 in Eigrp 50
Router C - E0 in Eigrp 50
Redistribute between ospf and Eigrp such that
1) C should always chose B as its default connection unless the
connection between B and A is down, then it should choose A.
2) B should always chose A as its default connection unless the
connection to A is down, then choose C.
So far I have figured out all except for the connection going down
between B and
A.
I used some AD manipulation and redistributing loopbacks to achive most
of the result.
But there is one part that I haven't been able to achive .i.e when the
connection between B and A is down, then C should A to send traffic.
Is there some way to adjust routing protocol behaviour when an interface
goes down.
I remember working with ISDN demand circuits but don't think it will
work in this case.
Any one want to take a crack at it.
By the way, router A is an ABR so there are routes being sent from other
areas to area 0.
TIA
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