Hyper-v webserver NIC hangs

Posted on 2012-03-23
Medium Priority
Last Modified: 2012-04-05
Hi we currently have an Hyper-V production web server( WIn 2008 R2 std, IIS7).  Our client accessess it to update, review contracts, contractor status and billing.  Contractors use it to update the job status. Past few weeks intermittently the website is inaccessible and upon checking, its the NIC it just hangs. So we reboot and everything goes back to normal.  During the time when the website is inaccessible normally you are unable to ping the LAN ip as well as the public IP.  Last couple of days a new twist to the issue developed, now when the site is inaccessible, we are able to ping the LAN and public IP intermittently.  Now when the site is down we are unable to ping internal or external ip and some days we can ping them just fine but the site is still inaccessible..  i have attached a web log reports. This issue happens once every 2nd day if not every day.  Not sure what could be the issue.  we are out of options.
so far we have
1. dedicated the NIC for production traffic.
2. Added 2nd NIC
3. seperated the traffic internal and external

since its a production issue we need this resolved soon.

Question by:R007j
  • 3
LVL 25

Expert Comment

by:Dirk Kotte
ID: 37760513
if your server are somtimes not pingable you can have
- a faulty NIC (deactivate the first NIC and use only the additiona one)
- a faulty IP-Stack (there should be a command -possible netsh ... - to repair the IP-Stack)
- OS or softwareproblems at your server (possible a unneeded application)

if the first 2 steps dont help you should think about a fresh install.
LVL 43

Accepted Solution

kevinhsieh earned 2000 total points
ID: 37769844
There is a hotfix available for networking issues for Hyper-V

Hyper-V: Update List for Windows Server 2008 R2

Specifically, look at
The network connection of a running Hyper-V virtual machine is lost under heavy outgoing network traffic on a Windows Server 2008 R2-based computer

or for SP1
The network connection of a running Hyper-V virtual machine may be lost under heavy outgoing network traffic on a computer that is running Windows Server 2008 R2 SP1

Author Comment

ID: 37771541
Thanks Kevin let me check it out.. I will update tomorrow as any of the fixes or troubleshooting can only be performed between the window of 11pm to 5am EST..

Author Comment

ID: 37813348
Hi Kevin, we have applied the patch over the weekend, so far so good...

Author Closing Comment

ID: 37813358
Thanks Kevin we will be monitoring it very closely.  i think the hotfix did the trick

Featured Post

Train for your Pen Testing Engineer Certification

Enroll today in this bundle of courses to gain experience in the logistics of pen testing, Linux fundamentals, vulnerability assessments, detecting live systems, and more! This series, valued at $3,000, is free for Premium members, Team Accounts, and Qualified Experts.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

What if you have to shut down the entire Citrix infrastructure for hardware maintenance, software upgrades or "the unknown"? I developed this plan for "the unknown" and hope that it helps you as well. This article explains how to properly shut down …
This article provides a convenient collection of links to Microsoft provided Security Patches for operating systems that have reached their End of Life support cycle. Included operating systems covered by this article are Windows XP,  Windows Server…
This tutorial will walk an individual through locating and launching the BEUtility application and how to execute it on the appropriate database. Log onto the server running the Backup Exec database. In a larger environment, this would generally be …
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…
Suggested Courses

624 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