I have a problem with ATM that my service provider and we say that it shuold not be happening.
We have 8 international sites connected through the same carrier.
The network topology is about the same at each site, as are the router configs.
A couple of those places are experiencing the problem I´m trying to solve.
Even though we have at least two E1´s bundled in one ATM IMA group, when one of the E1´s goes down, we lose connectivity to that site until the controller is up again. It doesn´t matter wich controller it is. At the other sites, when one controller goes down, we don´t lose connectivity. The routers, configs and the carrier are the same for all sites. Even the routing is the same
Can someone point me in the right direction, please?
Thanks to all for your help.
CISCO IOS: c3725-jk9s-mz.123-16.bin
controller E1 0/0
mode atm aim 1
controller E1 0/1
mode atm aim 1
description GM2413 to Lucent ATM network ima-group 0 4/1
The site has another carrier and we had the oprtunity to connect through them while running a series of tests. The router log only shows that one link goes down, but not the other. The errors are due to an interface converter that will be replaced in a few days. The pvc on the other side is up. They do not see any problem as well.
The best way to troubleshoot this is to connect to the router via out-of-band connection, disable one ATM interface and run debugs. With no out-of-band access you would have go by what carrier tells you is the status of the 2nd link and mightn't be that helpful.
in our service provider network. The pvc min bw was configured for about 4MB, so when one E1 went down, the remaining bw (2MB) was not enough to support the pvc, so the pvc went down. Our ISP configured the min
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