I have a Cisco router 877. I am trying to configure a backup with ISDN.
The primary line is an ADSL over pppoe. The problem is that despite the primary line fails, doesn't change the path and continue going by the main route.
I have a very similar setup, also with a cisco 877, but with a normal DSL and it works perfectly.
The configuration (only relevant pieces):
interface BRI0
description connected to central
no ip address
encapsulation ppp
no ip split-horizon
dialer pool-member 1
isdn switch-type basic-net3
isdn point-to-point-setup
no cdp enable
!
interface ATM0
no ip address
no atm ilmi-keepalive
no shutdown
pvc 8/32
pppoe-client dial-pool-number 2
!
dsl operating-mode auto
!
interface Vlan1
ip address 192.168.58.10 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1360
!
!
interface Dialer2
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 2
dialer remote-name redback
dialer-group 2
no shutdown
ppp authentication pap chap callin
ppp chap hostname xxxxxxx
ppp chap password x xxxxxxxxxxxx
ppp pap sent-username xxxxxx password x xxxxxxxxxxx
!
interface Dialer1
description connected to central
ip address 10.2.58.2 255.255.255.0
encapsulation ppp
no ip split-horizon
dialer pool 1
dialer remote-name rcentral1
dialer idle-timeout 30
dialer string xxxxxxxxxx
dialer hold-queue 10
dialer-group 1
ppp authentication chap
!
!
ip nat inside source route-map nonat interface Dialer2 overload
!
ip route 0.0.0.0 0.0.0.0 Dialer2
ip route 0.0.0.0 0.0.0.0 Dialer1 240
!
dialer-list 1 protocol ip permit
dialer-list 2 protocol ip permit
I solved the problem by activating a tracking but is slower than the other method. There would be another solution?
Sorry for my english
Thanks in advance.
