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lohjintiam
Enthusiast

VMware ESXi: Intermittent lost of network connectivity with Windows 2012

Hi all,

Anyone experience the issue above? Windows event viewer log doesn't show any errors/notification and only the application logs shows that its unable to communicate with other servers.

We are already using the correct network adapter (vmxnet3) and based on the ova template.

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2109922

The only solution at the moment is to reboot the vmware image

Thanks!

-JT-

4 REPLIES 4
Sasikumar Divvela
Cisco Employee

Please check this.. 

http://docwiki-dev.cisco.com/wiki/Troubleshooting_Tips_for_Unified_CCE_11.0#Windows_2012_R2_Upgrade_Issues

Is this an internal site?

Hi,
 
Can you check if TCP offloading is disabled? 
http://docwiki.cisco.com/wiki/Contact_Center_Networking:_Offload,_Receive_Side_Scaling_and_Chimney
- Is this the first time you have experienced such an issue? Did you make any changes recently?
- Is this running on a physical or virtual platform? If virtual, can you check for these configurations: 
http://www.cisco.com/c/en/us/support/docs/servers-unified-computing/ucs-manager/116092-vmware-deploy-cklst-ucce-00.html
 
 
Also can you try this option to Delete the Existing NIC from windows server
 
Upgrade VM Network Adapter From E1000 to VMXNet 3
Note down the MAC ID & IP address
uninstall Adaptor in system device manager  
Remove the NIC from Esxi notes
set devmgr_show_nonpresent_devices=1
Add the new NIC vmxnt3
assign the IP, mask and gw IP, and verify the nic type
 
Thanks & Regards
S.Ramamoorthy
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