Solved

Network dropping same time every week

Posted on 2014-03-19
9
669 Views
Last Modified: 2014-04-01
Hi Experts,
For some reason every Wednesday at exactly 3:03 our network drops for about 5 seconds. Just long enough to lose connectivity and our database to drop. One interesting thing is daylight savings has affected the time of the drop, it was 2:03 before.

I have checked the event logs on the domain controller and a that time there is an event 27. Intel(R) Gigabit ET Dual Port Server Adapter Network link has been disconnected.

The event logged at the exact same time on a staff computer is Event 7040 The start type of the Windows Modules Installer service was changed from demand start to auto start.

Any and all ideas are appreciated.
0
Comment
Question by:nicolausj
  • 5
  • 2
  • 2
9 Comments
 
LVL 12

Expert Comment

by:piattnd
ID: 39940771
Definitely sounds like something running on a schedule then.  Check scheduled tasks and make sure there's nothing running.  Turn off auto updates on the server.  If the problem still persists, turn off all unnecessary services.  If possible, turn off all non Microsoft services from within MSCONFIG and see if the problem still continues.  

Do you see this behavior from any other servers?
0
 
LVL 3

Author Comment

by:nicolausj
ID: 39940788
Yes, I just checked or other domain controller and the network card seems to drop at the same time as well.
0
 
LVL 12

Assisted Solution

by:piattnd
piattnd earned 250 total points
ID: 39940793
Are they plugged into the same switch?  Are there any installer events around the same time on each server?  Do you have auto updates running at that time/day?
0
Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

 
LVL 10

Expert Comment

by:Schuyler Dorsey
ID: 39940796
A couple things to check..

1. Go on the server to the Driver Mgmt page and go to the properties of the NIC. Under the power mgmt tab, make sure the option "allow this computer to turn off this device to save power" is UNCHECKED.

2. Check your scheduled tasks. Do you have a weakly backup running at that time?

3. Is this a virtual or physical environment. I often see this behavior when it is a virtual environment and the ISCSI or NFS traffic was not segmented from the main data traffic.
0
 
LVL 3

Author Comment

by:nicolausj
ID: 39942323
piattnd, they appear to be on the same switch a 3com 4210.

Schuyler Dorsey, Power save is turned off. All of our backups run between 9pm and 3 am depending on the server and I double checked all of our scheduled tasks an nothing is specifically running wednesdays at 3 or 2. These are not virtual servers but dell boxes.
0
 
LVL 3

Accepted Solution

by:
nicolausj earned 0 total points
ID: 39942370
I just logged into the switch and the uptime and all the stats for it aren't loading correctly. I might try rebooting it this weekend and see if that helps.

Any other suggestions are still welcome. And I will investigate.
0
 
LVL 10

Assisted Solution

by:Schuyler Dorsey
Schuyler Dorsey earned 250 total points
ID: 39942380
If you are going to reboot the switch anyway.. I would reboot it and see if it comes up fine. If it does, I would try upgrading the firmware to the latest version.
0
 
LVL 3

Author Comment

by:nicolausj
ID: 39942532
I was thinking the same thing.
0
 
LVL 3

Author Closing Comment

by:nicolausj
ID: 39968795
The reboot seemed to work and nothing happened wednesday afternoon.

Thanks for the help.
0

Featured Post

Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

Question has a verified solution.

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

When you try to extract and to view the contents of a Microsoft Update Standalone Package (MSU) for Windows Vista, you cannot extract the files from the MSU. Here we are going to explain how to extract those hotfix details without using any third pa…
An article on effective troubleshooting
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

856 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