When fragmenting IP packets, you usually split the packets up into "n-1" pMTU sized packets, and 1 packet of the remainder. Now with wireless networks the larger the packet is the more likely it is to be lost/corrupted. I suspect it would make more sense to fragment packets into equal sized pieces, so totlen/n bytes each. Most routing overhead is per packet, and the total number of packets hasn't been changed. Also this would tend to avoid so many pMTU issues as your packets are probably going to less than pMTU sized.
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December 9th, 2007 at 3:08 am
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