Jumbo Frames and Intel

I am working on deploying a shiny new iSCSI SAN (Storage Area Network) for EMOL and I have run into a bit of an annoyance. First why does Intel make so many different versions of the Intel PRO/1000 card? We purchased a server with two on-board Intel PRO/1000 cards and added a PCI-X Intel PRO/1000 card with the plan to Ethernet Bond the two on-board cards and use the add-on card for server management.

This is a plan that definitely did not come together. First the main board manufacturer thought it would be a good idea to use two different Intel chips for the two Ethernet controllers. One is an Intel PRO/1000 PL the other is an Intel PRO/1000 PM. The add-on card we purchased is an Intel PRO/1000 PT. So it turns out the Intel cards are far from the same and I am not happy about that. It took me much Internet digging to find this out.

Intel PRO/1000 PM - does not support jumbo frames
Intel PRO/1000 PT - supports jumbo frames in Microsoft Windows operating systems only when Intel PROSet for Windows Device Manager is installed and only up to 9238 bytes.
Intel PRO/1000 PL - support jumbo frames larger than 9238 bytes.

So what are my options? Well I do not run Windows, and I would like to run at a minimum two network ports teamed. Which means now I need to order an additional Ethernet card or a two port Ethernet card. What I do know is it will likely not be a Intel Pro 1000.

One Response to “Jumbo Frames and Intel”

  1. Rick Harding Says:

    Yuck, another example of “hardware sucks”

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