We are using Cisco AS5400 as mgw, we often found during call peak hrs thsi mgw's showing error logs for cpu utlization. I have following questions in regards to thsi error.
1. why this error logs comes?
2. where & what we need to chcek? any hardware or IOS issue?
3. main and important thing whether during such error logs there is load on MGW and due to over cpu utlization call which attempt on MGW may failed? if yesy its failed with MGW end or failed from source end as abondan? or else if MGW disconnect then what is ISDN casue code.
This error logs shows the CPU Utilization on your MGW and your CPU Utilization may peak during the busy hours of traffic in your network due to high number of calls hitting your MGW. This is quite normal due to high number of calls flowing on your MGW and CPU exceeds, but ensure your MGW E1 capacity based on your Traffic in the network so that your CPU should not exceed the limit or else it may cause the call failure.
You can configure the Call treatment in your Voice gateway to keep the CPU utilization within specified threshold level..
For the call failure, I hope you are looking for ISDN cause code in MGW. you can findout the Cause code values for ISDN to identify the type of network failure, the below link helps. Revert if you need any further information related to cause code failure value.
You can check the call failure reasons in both PGW and MGW level. This will help you to isolate the problem in each level and identify the failure reason. Here is a document which i created based on the discussion which will help you to troubleshoot the call failures.
Question: Have the phone connected and can ring out-but no sound coming from the handset - analog home phone - phone makes connection and pick up at the other end is ok. Can you help?
Question: Have the phone connected and can ring out-but no sound coming from the handset - analog home phone - phone makes connection and pick up at the other end is ok. Can you help?Answer
iPXE boot in ASR9K
This document applies to NCS5500 and ASR9000 routers and has been verified as such.
traditional ECMP or equal cost multipath loadbalances traffic over a number of available paths towards a destination. When one path fails, the traffic gets r...