Recently, in the middle of the night, our ISDN line stopped working. Channel one's light is on and the TXD and RXD light only flash intermittently. Channel two's lights are not on at all. It is a Cisco 800 router. Show interfaces shows that "BRI0 is up, line protocol is up (spoofing)", "BRI0:1 is up, line protocol is up", and "BRI0:2 is down, line protocol is down". The phone company swears that it is our router and not their equipment. What could be wrong (at the phone company or with our equipment)?
Another thing to do is get an externakl isdn at both ends and dial each other up without using the routes and run a bert test.A while back I used a device called bri2000 at both ends by passing the routers and was getting a ton of errors, I
presented this to telco to rule out the routers and they eventually found the problem.
It doesn't sound like a telco problem since one of your BRI channels is up and you are getting multiple frame established. Do you have IP addresses on both ends of the WAN link? If so, see if you can try to ping directly across the link to the remote peer. This will let you know whether or not traffic is able to pass over that link. If so, you may have a routing issue that needs troubleshooting.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...