Configuring Dial Backup ?

From: Khurram Khani (ajmal@xxxxxxxxxxxxxxx)
Date: Fri Feb 25 2000 - 21:26:53 GMT-3


   
Hi.

R1 ---serial link ----- R2

R1/R2 are provided with ISDN Dial Backup.

Backup Interface Command

----
If I get a scenario to provide backup from R1-->R2  and from
R2--->R1 , shall I use  "backup interface bri0" in the serial
interfaces of both Routers ?  infact putting the backup interface
command at only side is also sufficient. And I tried putting it
on both the sides that also work.  Kindly advise.

Floating Static Routes ----------------

If I want to use floating static routes to provide DIAL Backup to Serial link, Can I still use the same SUBNET on BRI interfaces as Serial Interfaces? I tried it and I am getting 50% of ping success rate. I believe this is due to the fact that BACKUP interface command puts the BRI interface in standby mode where as if I use static routes still the interface will remain UP

Please advise

TIA KHURRAM KHANI.



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