You need a floating static route for the ISDN interface; something like "ip route 0.0.0.0 0.0.0.0 18.104.22.168 200", where 22.214.171.124 is the 2620 ISDN address. If you are using unnumbered on the ISDN interface, then you also need to add "ip route 126.96.36.199 255.255.255.255 dialer 1", where Dialer1 is your dialer profile. Once the serial link goes down and 188.8.131.52 is removed from the routing table, this new default route will be installed.
At HQ, for normal routing, you need to have a route for the LAN (or other networks) of the 1720; so something like "ip route 172.16.0.0 255.255.0.0 184.108.40.206". You would do this for each remote site.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...