Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I'm having trouble with a server (Windows Server 2008 R2) on my network.

It is going down for short periods at a time, but not very often.

The interesting thing:

If I ping the server from my computer (we'll call this client-x) using the -t switch, I will continuously get no reply. However the second I ping client-x from the server, I can see the previous ping pick up a reply? It's almost as if pinging client-x from the server, wakes up the networking capabilities? Has anybody got any idea what is going on here?

share|improve this question
    
I have also observed this on a few occasions. What network card driver and version? –  Greg Askew Dec 3 '12 at 16:57
    
@GregAskew It is a virtual server (Hyper-V) –  George Dec 4 '12 at 8:10
    
so.. what network card and driver is the host using? Is there a NIC Team involved? –  Rex Dec 4 '12 at 14:45

1 Answer 1

Is there a possibility that this server has been assigned the same IP as another machine on the network? This can create strange intermittent connectivity issues (e.g. periods of non-connectivity for 20 seconds at a time since it's a tossup which host responds to ARP queries first from a client on the network).

share|improve this answer
    
Thanks for your reply. Nope there is definitely no other machine with the same IP. Also, the IP for the server in question has been reserved in the DHCP. –  George Dec 3 '12 at 16:50

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.