Using Dialer Watch to Failover

I'm hoping the experts here can help me with a problem that's been plaguing me for a couple of days.

We have a Cisco 2821 router at a remote site, a Cisco 3745 at the head office and a backup Cisco 3745 at a DR site. The 2821 normally talks to the 3745 over MPLS. If the MPLS fails the dialer-watch routine kicks off the ISDN call to the 3745 at the head office.

What we want to do is to have the 2821 call the 2nd 3745 at the DR site if it cannot establish an ISDN connection to the primary site. Currently the 2821 just keeps calling the primary site.

Any help would be much appreciated! I've included the relevant portions of the config from the 2821 router below:

Cisco 2821 Configuration: Hostname Cisco2821 ! username Cisco3745Backup password fist2punchu username Cisco3745Primary password fist2punchu ! interface GigabitEthernet0/0 ip address 10.106.240.14 255.255.255.252 no ip redirects no ip proxy-arp speed 100 full-duplex no cdp enable ! interface Serial0/0/0 description MPLS Primary Link ip address 10.106.240.2 255.255.255.252 no ip redirects no ip proxy-arp service-module t1 timeslots 1-24 no cdp enable ! interface BRI1/0/0 no ip address encapsulation ppp no ip mroute-cache dialer pool-member 1 priority 1 dialer pool-member 2 priority 2 isdn switch-type basic-ni isdn spid1 isdn spid2 ppp authentication chap ppp multilink ! interface BRI1/0/1 no ip address encapsulation ppp no ip mroute-cache dialer pool-member 1 priority 1 dialer pool-member 2 priority 2 isdn switch-type basic-ni isdn spid1 isdn spid2 ppp authentication chap ppp multilink ! interface Dialer1 ip address 10.106.240.10 255.255.255.252 encapsulation ppp no ip route-cache ip ospf network point-to-point no ip mroute-cache dialer pool 1 dialer remote-name Cisco3745Primary dialer idle-timeout 60 dialer string dialer load-threshold 2 outbound dialer max-call 4 dialer watch-group 1 dialer-group 1 no cdp enable ppp authentication chap ppp multilink multilink max-links 4 multilink load-threshold 1 either ! interface Dialer2 ip address 10.106.240.6 255.255.255.252 encapsulation ppp no ip route-cache ip ospf network point-to-point no ip mroute-cache dialer pool 2 dialer remote-name Cisco3745Backup dialer idle-timeout 60 dialer string dialer load-threshold 2 outbound dialer max-call 4 dialer-group 2 no cdp enable ppp authentication chap ppp multilink multilink max-links 4 multilink load-threshold 1 either ! router bgp 65555 no synchronization bgp log-neighbor-changes redistribute connected redistribute ospf 100 route-map igp-to-bgp neighbor 10.106.240.1 remote-as 65500 no auto-summary ! ip classless ip route 0.0.0.0 0.0.0.0 10.106.240.9 112 ip route 0.0.0.0 0.0.0.0 10.106.240.5 200 ip tacacs source-interface Loopback0 no ip http server ip bgp-community new-format ! access-list 101 deny ospf any any access-list 101 permit ip any any dialer watch-list 1 ip 10.106.240.1 255.255.255.252 dialer-list 1 protocol ip list 101 dialer-list 2 protocol ip list 101

Reply to
shinobi2
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Are the HQ 3745 and DRP 3745 routers connected via a network other than the MPLS network ?

Reply to
Merv

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