Scott's Weblog The weblog of an IT pro specializing in cloud computing, virtualization, and networking, all with an open source view

Problems with 802.1Q

I stumbled across a forum on Apple’s web site this morning (referred to me in turn by Derrick Story’s request for MacBook Pro feedback) that makes me glad I’m not yet able to afford a MacBook Pro.

According to the forum, there is a bug in the Ethernet driver in the Intel version of Mac OS X 10.4 that causes excessive packet loss on networks that employ 802.1Q. 802.1Q, in case you aren’t already familiar with it, is an Ethernet networking standard used in networks that employ multiple VLANs. Apparently, the Ethernet driver on the Intel-based Macs is incorrectly processing packets as 802.1Q packets when they really aren’t. This causes excessive packet loss and network connections that are pretty much unusable.

I guess I’ll have to wait for the second generation of Intel-based Mac laptops. That’s OK, as it gives me plenty of time to get my money’s worth from my current PowerBook G4.

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