I have a Cisco 3620 Router as part of a WAN and it talks to a Cisco 2500 series router via ISDN through a BRI port. I require both channels to be up due to traffic load.
The problem is that recently the second B channel comes up and then drops after 20 seconds exactly. It repeats this process continuously.
I've altered the "dialer load-threshold 50 either" sting with no effect, still drops every 20 seconds
Its been in operation for some time and has just commence doing this over the last few weeks and I'm lost.
Has anyone seen this problem before and found a cure?