ISDN - default route

From: gladston@br.ibm.com
Date: Mon Jun 27 2005 - 16:31:41 GMT-3


How would you configure a default route pointing to ISDN so it is on the RIB only when the main interface is down?

I tried pointing to physical BRI (ip route ...bri0/0), but I get an encapsulation failed for the addresses not mapped under bri (dialer map ip...)

I tried pointing to Dialer (ip route...dialer 200), but the default route is always on the RIB in this case.

I tried pointing to the remote IP of the ISDN (ip route 172.16.45.5), but the default route is always on the RIB in this case either.

Tested using legacy with this config:

interface BRI0/0
description testar dialer load-trheshold only on R5
ip address 172.16.45.6 255.255.255.252
encapsulation ppp
dialer map ip 172.16.45.5 name Rack2R4 broadcast 4441111111
dialer-group 1
isdn switch-type basic-ni
isdn spid1 555111111100
isdn spid2 555222222200
no cdp enable
ppp authentication chap
ppp multilink

Testing using dialer profile with this config:

interface BRI0/0
 no ip address
 encapsulation ppp
 dialer pool-member 200
 isdn switch-type basic-ni
 isdn spid1 555111111100
 isdn spid2 555222222200
 ppp authentication chap
 ppp multilink

interface Dialer200
 description testar dialer load-trheshold only on R5
 ip address 172.16.45.6 255.255.255.252
 encapsulation ppp
 dialer pool 200
 dialer remote-name Rack2R4
 dialer string 4441111111
 dialer-group 1
 no cdp enable
 ppp authentication chap
 ppp multilink



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