From: Stephens, Paul [Prof.Serv] (Paul.Andrew.Stephens@xxxxxxxxxx)
Date: Thu Aug 17 2000 - 11:22:48 GMT-3
Sorry everyone don't worry it does work, I was shutting down the interface
on r5 rather than unplugging it !!!!
Paul Stephens
UK INI Network Consultant
Networks and Systems Integration Services
Compaq Computer Ltd
paul.andrew.stephens@compaq.com
Tel: (Mobile) +44 (0)7818 457948
www.compaq.co.uk
-----Original Message-----
From: Geatti [mailto:geatti@home.com]
Sent: Thursday, August 17, 2000 16:28
To: Stephens, Paul [Prof.Serv]; ccielab@groupstudy.com
Subject: RE: Backup Interface
Paul,
If I understand this correctly you are attempting to use the backup
interface and ip ospf demand-circuit at the same time. You don't need to do
this.
The 'backup interface' command is a solution for DDR although the command
will put your isdn interface into a standby mode so no other use of it is
possible.
The ospf demand-circuit command is much more flexible.
Use one or the other, they are two different approaches to the problem.
Try them both independently of each other, they should both work. You've
already proved to yourself that if you take on off the other works.
Don't forget snapshot routing for the distance vector protocols and either a
floating static for EIGRP or watch-lists.
Good luck on you next attempt.
Marco
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Stephens, Paul [Prof.Serv]
Sent: Thursday, August 17, 2000 9:33 AM
To: 'ccielab@groupstudy.com'
Subject: Backup Interface
Hi guys
I've just come across a really strange situation and I don't know if it's a
bug or not. this is the layout below
area 3-------- r 5-------area 1--------r2
| |
| |
| area 0
| |
| |
isdn--------area 2----- r3
I don't know how well the above diagram looks to you all but I'll try to
explain whats happening. Ospf is working fine I have all the relevant
virtual inks to maintain connectivity, i.e r2 -r5 across area 1 and r3 - r5
across area 2, also i have ip ospf demand circuit on the isdn. Now the
problem;
If I use the backup interface command on r5 for area 1 it never brings the
isdn up on a failure with the interface on r5 connected to area 1. if i
don't use backup interface it works fine.
so my question is do I just rely on ospf to bring the isdn up and not use
backup interface at all ??? or am i asking a stupid question !!!!
As you have probably gathered from all my questions recently that I am in
the lab preparing for my next attempt
cheers
Paul Stephens
UK INI Network Consultant
Networks and Systems Integration Services
Compaq Computer Ltd
paul.andrew.stephens@compaq.com
Tel: (Mobile) +44 (0)7818 457948
www.compaq.co.uk
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