ISDN Backup question.

From: Ashok Verma \(ashoverm\) (ashoverm@cisco.com)
Date: Wed Mar 17 2004 - 23:59:12 GMT-3

Hi All

In following scenario:

                                                    ( )
                              |--------R1------- ( Isdn )
                              | / ( )
                              |---------R2-----/
                                        \
                                          \
                                          R3

R1 and R2 are connected with the isdn and also thru the ethernet .and
Area 1 is running on these two links .Between the R2 and R3 there is fr
link and running ospf area 0

Now my question is .....R1 should not challenge and also make the backup
of the ethernet interface(without using the backup interface command).

I can do it with the ip ospf demand circuit , but in that case event
some change in area 0 like on R3 some route changes ...make the isdn up
.. So is IP ospf demand circuit is the correct answer in real lab ...or
we need to use some more things additional to it.like dialer watch list
etc.

Thanks in advance.
Regards,

Ashok Kumar Verma
CCIP,CCDP,CCNP
Network Consulting Engineer
Customer Advocacy Advanced Service Dep.
Service Provider AS Div.2
Cisco Systems, K.K.Japan.

Tel: +81-3-5324-4583
e-mail: ashoverm@cisco.com

This archive was generated by hypermail 2.1.4 : Thu Apr 01 2004 - 08:15:33 GMT-3