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CMS Supervisor ongoing issue: The connection to the server xx.xx.xx.xx was lost

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rkimber83

Technical User
Oct 29, 2013
1
US
Hello, I am in need of some help with resolving issue w/ CMS Supervisor where the connection is lost at random times on two of our call stats monitoring PCs. I've scoured through related posts on a few different forums and have not yet reached a solution


Notes:
- This is Supervisor R16.1 running on Win7 connecting to CMS Server R13.
- The issue occurs at random. It can run for a day or two, almost a week without losing the connection. Whenever this happens the Supervisors have to reconnect and reopen all of their realtime reports. We can't have this happen on heavy call volume days.
- The Supervisors PCs have the real time reports run all day and night. They have for years without any issue. This started when we replaced the two desktops with newer models. I thought it was an issue with the new PCs since this was the only thing that changed. But, after reverting back to an older model PC I'm getting the same problem.
- There are other Supervisor PCs that connect to the same server from a different location. They have not lost connection to the CMS server. One of them runs 16.0 and the other 16.1.



Have ruled out: Maximum connections to CMS server (This would just cause it to reject further connections), server performance (sar command for 100 runs shows avg 97% resources are idle), resolved issue with CMS server NIC showing oerrors and collisions, a port speed mismatch (now running 100 full on switch and this interface), rebooted CMS server after 1500 days uptime, replaced data cable from switch to server, Tried 64bit and 32bit OS on workstations, tried an older workstation, disabled green ethernet & power efficient settings, changing from auto-neg to 100 full on workstation NICs, tried different ports and cables on the workstations, updated BIOS and all drivers for workstations, verified not related to backups.



Any ideas are greatly appreciated!
 
we also have similar environment where 2 different locations connect to same CMS server. try to check if there is any firewall rule are causing this issue. If this is two different service provider ; you might need to check if there have Qos setting on IP links. you can use packet capture to trace to check if you have any denial errors when it stops working. In my option this is not CMS issue.

Thanks
SJ
 
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