Loss of Network Connectivity?

[clott]

We have a few iMac labs in different locales that are having issues maintaining network connectivity. As a bit of background, there are PCs in these labs that have no issues, the iMacs have bootcamp and the Windows partitions also have connectivity issues. I have doubts that Casper has anything to do with this, but I'm hard pressed to think of any other culprit.

Any thoughts or suggestions would be appreciated.

[ernstcs]

Define "network connectivity". They literally have no IP address or are having issues accessing network resources to login? Need more...well, at least I do.

[bentoms]

Wireless or wired? If wireless what make & model are the points?

[clott]

They're all connected via ethernet. The connection drops entirely. It's as if they've become unplugged. The PCs on the same switches as these iMacs have no issues. We're also talking about 50 to 75 machines here, and Apple has validated that there's no issues with the batches that were purchased.

[don_cochran]

We had a similar issue with newer iMac hardware. We had issues at the connection at the wall. It needs all 4 pairs with secure connections to work.