You need to configure the backup interface from the serial interface ie:
router# int s0
router#(config-if) backup interface bri0
router#(config-if) backup delay 20 40
or
router#(config-if) backup interface dialer1
router#(config-if) backup delay 20 40
It would probably be better to use a Dialer interface instead of using the
BRI interface directly.
Hope that helps
Russ..
"Daniel Ma" <[EMAIL PROTECTED]> wrote in message
C0CA716714DDD211BB180008C7338C6F014D3BDE@EXCHANGE">news:C0CA716714DDD211BB180008C7338C6F014D3BDE@EXCHANGE...
> I am trying to backup an serial interface using Bri port. However I go
> through the BRI interface configruation commands, I could not find the
> command "backup interface"???? Can any one help me on how to configure it?
> And for Bri interface should I configure normal DDR? I am using one
> cisco4700M and one cisco2503, IOS 11.3.
>
> Thanks in advance.
>
> Daniel Ma
> Systems Engineer
> Enterprise Computing Unit
> Infonet Systems & Services Pte Ltd
>
>
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