Hi all, I am in the process of configuration a bunch of routers to do ISDN dial backup. Has any body worked with Dialer Watch on a router running OSPF? I know that some Cisco document says that Dialer Watch is only supported in EIGRP and IGRP. But others say any Dynamic routing protocols. Also, has any one used the IP OSPF Demand Circuit? This option is suppose to control the types of LSAs that are sent across the dial line. It reduces the amount of Access-list that is needed to monitor the traffic. Basically, I am using 4 BRIs in a Dialer Interface with ip unnumbered Loopback0. Then, I will be using Dialer Watch to trigger the ISDN calls and run OSPF Demand Circuit to control packed over the dial link. Defaulting back to the serial link will be done based on OSPF cost statement once the link comes back. Does this sound like it's feasible or is it too much to handle? Any help will be greatly appreciated! Evan You - CCNA / Soon to be CCNP interface BRI1/0 description connected into a rotary group no ip address encapsulation ppp dialer rotary-group 0 isdn switch-type basic-net3 isdn T310 10000 no fair-queue no cdp enable ! interface BRI1/1 no ip address encapsulation ppp dialer rotary-group 0 isdn switch-type basic-net3 isdn T310 10000 no fair-queue no cdp enable ! interface BRI1/2 no ip address encapsulation ppp dialer rotary-group 0 isdn switch-type basic-net3 isdn T310 10000 no fair-queue no cdp enable ! interface BRI1/3 no ip address encapsulation ppp dialer rotary-group 0 isdn switch-type basic-net3 isdn T310 10000 no fair-queue no cdp enable ! interface Dialer0 description Dialer group controlling the BRIs ip unnumbered Loopback0 encapsulation ppp ip ospf cost 1500 ip ospf demand-circuit dialer in-band dialer idle-timeout 500 dialer map ip 53.29.248.2 name hostname broadcast XXXXXX dialer load-threshold 30 either dialer watch-group 1 no fair-queue no cdp enable ppp authentication chap ppp multilink hold-queue 100 in ! dialer watch-list 1 ip 10.10.10.10 255.255.255.252 dialer watch-list 1 ip 10.1.2.12 255.255.255.252 Evan You - CCNA / Soon CCNP _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]