We are using pgw in nailed mode and 5400s as gateways. When we define new channels and sometimes without no reason some of the cics going to state MATE_UNAVAILABLE and it is vert hard to correct the error. I try shut/no shut on controller, serial interface and rlm group, switch over in the pgw etc. Is there a a simple way to correct this?
I am seeing this problem also. But only in the following scenario...
I have IUA to some gateways and RLM to others.
If the back-haul network goes away briefly, then the cics on the PGW related to the ext nodes with RLM recover fine, but the ones with IUA do not. They remain in the MATE_UNAVAIL state, and a reset-cic has no effect. It is not until the nfas group dchannel has a shut/ no shut that the pgw sees the partner state correctly, or if this doesnt work, the Controller must be shut/no shut. If either of those do not cure the problem, as a last resort, a reload of the gateway does.
I am running 9.4(1) with system patch 40 and protocol patch 47
Our back haul is provided by a third party so if they have an outage (planned or unplanned), it affects us big time!!!
Does any one else experience similar problems? If so, how have you fixed them?
If you are just adding the configuration for the first time or adding new CICs it is always best to export your configuration first and make sure that the CICs are mapped to the correct NASPATH and the correct NFAS interface. The next thing you want to check is that your RLM connection is good. Make sure that the ports are open for RLM and connectivity is ok. Finally you will want to check the gateway.
Here look at the show isdn service and make sure that the CICs do not show a pending state. Also check out the cottrollers T1/E1 and make sure all is well there.
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