[Beowulf] Jumbo frame cards and switches

Art Edwards edwardsa at afrl.kirtland.af.mil
Thu Mar 24 10:02:18 PST 2005

I have spent some time looking at posts on Gb cards and Gb switches for jumbo
frames. We currently have broadcom GB BCM7501 cards and the catalyst
4000 switch. I am able to set mtu to 9000 on the cards, but I have found
out that the switch does not handle jumbo frames. My questions are:

1. If I can set the mtu to 9000, does this mean the card can actully
send and receive messages this size?

2. How much would I have to spend for a 64 port GB switch that can
handle jumbo frames? Are there vendor recommendations?

Art Edwards

Art Edwards
Senior Research Physicist
Air Force Research Laboratory
Electronics Foundations Branch
KAFB, New Mexico

(505) 853-6042 (v)
(505) 846-2290 (f)

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