Dell workstations network disconnects.

[drjarmon]

Dell workstations with Intel network adapters are reporting network disconnections in Event logs.  Several are connected to a common NV1534 switch and disconnects happen at same time.  Switch isn't reporting any issues other than port flapping.

Firmware Version     R10.5.3

Part Number            1702590G1

Intel(R) 82579LM Gigabit Network Connection

Network link is disconnected.

Any insight will be helpful.

Thanks, Don

[Anonymous]

Don:

There are no known issues with ADTRAN switches and Dell workstations.  Were you able to find any additional information about the nature of the failure?

Levi

[drjarmon]

The was a couple of actions taken to help normalize network connection.

Steps taken on switch:

Disabled PoS on ports supporting workstations

Enabled Edge port on all ports supporting end nodes

Workstations:

Disabled Power Management for Network interface http://support.microsoft.com/kb/2740020

There is still a chicken and egg situation with the new Windows 7 desktops resulting in failed initial attempts to access Domain controller or computer NETLOGON, Load Group Policies, and Time sync. These services are trying to access the DC before network is available.

“The behavior is caused by a race condition between network initialization, locating a Domain Controller and processing Group Policy. If the network is not available, a Domain Controller will not be located, and Group Policy processing will fail. Once the operating system has loaded and a network link is negotiated and established, background refresh of Group Policy will succeed.”

Ref; http://support.microsoft.com/kb/938449

[Anonymous]

drjarmon:

Do you have further questions on this post?  If so, please do not hesitate to reply.  I will be happy to help in any way I can.

Levi

[Anonymous]

drjarmon:

I went ahead and flagged "Assumed Answered" on this post to make it more visible and help other members of the community find solutions more easily. If you feel like there is a better answer, feel free to come back to this post and select it with the applicable buttons.  If you have any additional information on this that others may benefit from, please come back to this post to provide an update.  If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.

Thanks,

Levi