Configuring PRI for Backup

[bapatsubodh]

Is it possible to configure PRI (ISDN) lines as a back up to 64 kbps leased lines ? At one location if leased line fails is it possible to initiate a call from PRI line to a BRI line where leased line has failed ? I am able to manually establish a call to that location by " isdn test call .... " command. But I am not able to route traffic on this link either by backup or by adding static routes manually.

Any link on cisco.com / or sample conf. is appreciable.

Thanx in advance.

Subodh

[globalnettech]

Hello Subodh,

this should certainly be possible. The configuration would basically look like this:

interface Serial0:15

ip address 10.1.1.1 255.255.255.252

backup interface BRI0

no ip route-cache

!

interface BRI0

ip address 192.168.1.1 255.255.255.0

backup interface Serial0:15

dialer map ip 192.168.1.2 name REMOTE1 broadcast 1234

dialer-group 1

encapsulation ppp

no ip route-cache

no ip mroute-cache

load-interval 30

no keepalive

isdn switch-type basic-net3

no fair-queue

no cdp enable

ppp authentication chap

!

ip route 0.0.0.0 0.0.0.0 10.1.1.2

ip route 0.0.0.0 0.0.0.0 192.168.1.2 200

What do you have configured right now ?

Regards,

GNT