[yallow]

OK, I seem to find a proper workaround -

C:\Documents and Settings\Administrator>arp -a

Interface: 94.23.157.84 --- 0x10003
Internet Address Physical Address Type
188.165.197.182 00-30-48-be-32-f2 dynamic

C:\Documents and Settings\Administrator>netsh interface ip delete arpcache
Ok.

C:\Documents and Settings\Administrator>arp -a

Interface: 94.23.157.84 --- 0x10003
Internet Address Physical Address Type
188.165.197.182 00-00-0c-07-ac-01 dynamic

C:\Documents and Settings\Administrator>arp -s 188.165.197.182 00-00-0c-07-ac-01


C:\Documents and Settings\Administrator>arp -a

Interface: 94.23.157.84 --- 0x10003
Internet Address Physical Address Type
188.165.197.182 00-00-0c-07-ac-01 static

C:\Documents and Settings\Administrator>

Now, can anyone please explain, what's wrong there? Why is it if set to dynamic it keeps changing to a wrong MAC address all the time?

[Myatu]

Every 20 minutes (approximately) I can't reach the VM.
...
Any ideas how I can troubleshoot this one?

Have you verified the MAC address for the (virtual) network interface matches the one assigned by OVH? If not, your VM will loose its connectivity.

[iMx]

With the basic fundamentals of tcp, if you can send stuff - and your access works - you have to be able to receive the response

Have you tried spinning up another OS, to see if it occurs with that as well? Linux, BSD....anything really? Do you have any other vm's running?

[yallow]

Yes, I do. However I think u misunderstood me. I CAN access the Internet from the VM. I can't access the VM from the Internet. Sometimes. If that happens I have to "repair" the LAN connection on my VM (Windows). After that the VM is accessible from the Internet again for another 20 minutes or so.

[iMx]

You really want to be able to see what drops directly onto the wire, doing that inside the VM isnt really going to help - im sure you'll see it trying to transmit packets but getting no return.

Im running VMware server so can do it directly on the physical server. I assume youre using virtual mac's for your vm's, and then mapping in esxi?

[yallow]

Yeah, probably.
How do you troubleshoot it?
Would you recommend using something similar to tcpdump on Windows?

[iMx]

http://forum.ovh.co.uk/showthread.php?t=3669

I think you may be seeing something similar to me, im sure there are layer 2 problems... Support advised me 5 hours ago that they were looking into the switch configuration.

[yallow]

Hi,

I have a failover IP set up on my Guest Windows 2003 machine.
Every 20 minutes (approximately) I can't reach the VM.
Ping returns "Request timeout" messages.
At the same time there are no such problems with the host (ESXi).
The host is always reachable.
What I have to do is go to the guest machine console through the "Vsphere Client" and click Repair on the "Local Area Connection".
As soon as click it I can reach (ping) my failover IP again. Until it drop off in 20-30 minutes.
I have nothing installed on this VM.
I tried different Network adapters from VMware - E1000, Vmxnet2, vmxnet3..
I tried to reinstall a clear machine from scratch.
Same thing..

Any ideas how I can troubleshoot this one?
Is there a workaround? I was thinking of scheduling the repairing thing every 20 minutes but that's definitely not the best workaround.
Should I raise a ticket with OVH or its a problem of my VM and I have to deal with it on my own?

I can connect to the Internet from the VM after loosing the connection and it works. So for some reason the connection becomes a one-directional from time time and the only thing that fixes it is "repairing" the LAN on Windows.