gigabit switch that supports jumbo frames?
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Posted by peter on November 28, 2006, 8:46 pm
Please log in for more thread options I'm looking for 8-port gigabit switch (home LAN, under $100). I looked up two cheapest ones (netgear, trendnet) and found someone complaining about jumbo frames not working. Is there a review or some ways to find gigabit switch that is verified to work with jumbo frames? | ||||||||||||||||||||||||||||||||||
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Posted by Rick Jones on November 29, 2006, 3:19 pm
Please log in for more thread options > Is there a review or some ways to find gigabit switch that is verified to
> work with jumbo frames? Ah the joys of the IEEE refusing to produce a standard for a larger frame size for "ethernet" :) Support for _which_ jumbo frame? Since there is no de jure standard, different vendors have different definitions as to what is a "jumbo frame." For some, they hew to the line initiated by Alteon and define it as an MTU of 9000 bytes. Others only 8XXX. Some up to 16XXX. And some may claim support for jumbo frames with something as low as 2XXX. (Although that one is a rather vague recollection) IMPO "jumbo frame" is at least 9000 byte MTU. Anything less is wimping-out. rick jones -- Wisdom Teeth are impacted, people are affected by the effects of events. these opinions are mine, all mine; HP might not want them anyway... :) feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... | ||||||||||||||||||||||||||||||||||
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Posted by Rick Jones on November 30, 2006, 1:59 pm
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[ reposting with NNN rather than the previous placeholder soas to not trip over simplistic content filters... ] > I'm looking for 8-port gigabit switch (home LAN, under $100). I
> looked up two cheapest ones (netgear, trendnet) and found someone > complaining about jumbo frames not working. > Is there a review or some ways to find gigabit switch that is
> verified to work with jumbo frames? Ah the joys of the IEEE refusing to produce a standard for a larger frame size for "ethernet" :) Support for _which_ jumbo frame? Since there is no de jure standard, different vendors have different definitions as to what is a "jumbo frame." For some, they hew to the line initiated by Alteon and define it as an MTU of 9000 bytes. Others only 8NNN. Some up to 16NNN. And some may claim support for jumbo frames with something as low as 2NNN. (Although that one is a rather vague recollection) IMPO "jumbo frame" is at least 9000 byte MTU. Anything less is wimping-out. rick jones -- Process shall set you free from the need for rational thought. these opinions are mine, all mine; HP might not want them anyway... :) feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... | ||||||||||||||||||||||||||||||||||
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Posted by Marris on November 30, 2006, 3:32 pm
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As a matter of interest why do you want to use jumbo frames? Using jumbo frames can actually slow transmission down because they need more buffering. > I'm looking for 8-port gigabit switch (home LAN, under $100). I looked up
> two cheapest ones (netgear, trendnet) and found someone complaining about > jumbo frames not working. > > Is there a review or some ways to find gigabit switch that is verified to > work with jumbo frames? > | ||||||||||||||||||||||||||||||||||
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Posted by Rick Jones on December 1, 2006, 1:50 pm
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> Using jumbo frames can actually slow transmission down because they
> need more buffering. Hmm, I'm not sure what that referrs to. I know that using JumboFrames can have applications interact with the nagle Algotirhm when they didn't before, and I suppose might affect how many segments per window. Is that what you meant? Otherwise, using JumboFrames significantly reduces the CPU overhead of transferring data. rick jones -- Wisdom Teeth are impacted, people are affected by the effects of events. these opinions are mine, all mine; HP might not want them anyway... :) feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... | ||||||||||||||||||||||||||||||||||
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> two cheapest ones (netgear, trendnet) and found someone complaining about
> jumbo frames not working.