topic Re: VM - Network issue in ESXi Discussions

VM - Network issue

sacden — Wed, 12 Apr 2017 09:33:06 GMT

Hello,

we have a problem with hosts ESXi 5.1 (799733): the VMs sometimes lose the network connection. The issue is not involved on all virtual machine but random.

If we disconnect and reconnect the virtual nic all work fine.

Please, could you tell me what I can do to fix it?

Regards,

Denis

Re: VM - Network issue

Harishtoy — Wed, 12 Apr 2017 09:53:21 GMT

Make sure VM tools are upto date... this will resolve most of the network and NIC related issues with respect to VMware.

after reconnecting the vNIC does issue reoccur?

Re: VM - Network issue

sacden — Wed, 12 Apr 2017 10:19:32 GMT

Thank for answering.

Yes the vmware tools are uptodate for that version.

I can't answer you, because the issue is happened 2 day ago and at the moment no issue for that VM.

But this morning is happened with another VM (never happended before)

Regards,

Denis

Re: VM - Network issue

khaliqamar — Wed, 12 Apr 2017 13:50:34 GMT

give us more details

what virtual nic adopter you are using.

which guest operating system.

Re: VM - Network issue

sacden — Wed, 12 Apr 2017 14:24:14 GMT

Yes sure.

For all VMs I have:

The NIC driver is VMXNET 3

The OS is Windows Server 2008 R2 64

One Nic connected to Standard vSwitch

Virtual machine version: 8

The VM tools uptodate.

Right now I've noticed that there are 3 node (3 hosts on the pharm) and the issue is happened just in one.

Thanks and regards,

Denis

Re: VM - Network issue

Sakkanan — Wed, 12 Apr 2017 15:17:39 GMT

Are the VM server configured as Microsoft NLB server in Windows Operating system?

check if the Microsoft configured as a unicast NLB in that case you may face this issue.