Solved

Windows 2008 R2 Server frequently freezes network activity

Posted on 2013-12-17
4
506 Views
Last Modified: 2014-05-28
Hi, fellow experts,

one of our customers runs Windows 2008 R2, fully updated using Microsoft Update, Intel Pro/1000 PT NIC (drivers 9.16.10.0). Several times during the day all network activities freeze for some seconds to some minutes, and then resume as if nothing had happened. During that time the server's console can be used pretty normally, notepad (for example), task manager etc. can be started and used normally. Only network activies are frozen. I can't even ping 127.0.0.1 at that time. To test this, I'm running a batch with an endless loop that pings 127.0.0.1 and logs the time - when the server freezes the network acitivies, the ping just pauses and eventually resumes as if nothing had happened. It still lists pings roundtrip time as <1 ms. The servers logs nothing particular in the event logs for that time.

There's another server running in a Hyper-V instance on that server, and that, too, experiences identical problems - can't ping 127.0.0.1 when the network on the physical box freezes.

I have already replaced the server's NIC, although by another Intel one, and thus using the same drivers. No change here either...

Do you have any clue what's happening here? Especially the lack of entries in the eventlog bothers me - the problem just goes away after some time as if nothing had happened...

I'm attaching an Excel-File that shows the ping log - should be 2-3 seconds per ping...

Thanks for your feedback,
Thomas
Pingtest.xlsx
0
Comment
Question by:Staudte
  • 3
4 Comments
 
LVL 14

Expert Comment

by:Ram Balachandran
ID: 39724402
Check if the network adapter is compactible with the Server Hardware
For Windows 2008 R2, you can fine tune the network settings, follow the document for Windows 2008 R2 from the below link
http://msdn.microsoft.com/en-us/library/windows/hardware/dn529134
0
 

Author Comment

by:Staudte
ID: 39828193
In the meantime I have used another NIC from another manufacturer - same problem. Also, the physical server has been fully replaced by now, so I can exclude a hardware problem. (Harddisks were kept, so the OS and software was not changed.) Other - identical - servers (same hardware, some OS) at other sites are working fine, so I suspect some sort of software problem.

I don't see how fine tuning network settings would help - could you please be a bit more specific there? I mean, after all even pinging 127.0.01 stalls for many seconds (to a couple of minutes). This requires more than "fine tuning"...
0
 

Accepted Solution

by:
Staudte earned 0 total points
ID: 40087419
It appears that it was the SmartScan feature of the TrendMicro Worry Free Business Antivirus tool... "Worry Free" hah! Good joke.... Disableing that function cured the problem.
0
 

Author Closing Comment

by:Staudte
ID: 40095112
There were no other significant comments...
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Sometimes drives fill up and we don't know why.  If you don't understand the best way to use the tools available, you may end up being stumped as to why your drive says it's not full when you have no space left!  Here's how you can find out...
This article explains how to install and use the NTBackup utility that comes with Windows Server.
This tutorial will show how to push an installation of Backup Exec to an additional server in both 2012 and 2014 versions of the software. Click on the Backup Exec button in the upper left corner. From here, select Installation and Licensing, then I…
This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten. The USB drive must be s…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question