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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: MTU of the Internet?
On Feb 5, 20:45, "Dorian R. Kim" <[email protected]> wrote: > > 512 544 576 1024 1536 2048 2560 3072 3584 4096 4608 > > .010 .006 .120 .000 .099 .197 .000 .000 .000 .000 .000 > > > > It's been up for some weeks and the sample size is, well, OK. As > > expected, large number at the low end, but I'm not sure what to think > > Bug. I believe counters a shifted by one slot from 1024. As you'll note > that that slot is empty. Yes, that's what one would suspect, but it's been like that ever since flowswitching was first introduced (which, of course, doesn't necessarily mean anything). In any case, the interesting part is that 30% of all packets would still be larger than 576, with probably close to 20% being larger than 2*576, meaning that an "enforced" MTU of 576 would lead to a very substantial increase in packet count. This would be a big step in the wrong direction. (On that note, I'm actually not sure about the wisdom of MTU discovery in the Internet, given the large number of dial-up users. The way to go is to send big packets and fragment in the access server if the user has negotiated a small MRU.) -- ------ ___ --- Per G. Bilse, Director Network Eng & Ops ----- / / / __ ___ _/_ ---- EUnet Communications Services B.V. ---- /--- / / / / /__/ / ----- Singel 540, 1017 AZ Amsterdam, NL --- /___ /__/ / / /__ / ------ tel: +31 20 5305333, fax: +31 20 6224657 --- ------- 24hr emergency number: +31 20 421 0865 --- Connecting Europe since AS286 --- http://www.EU.net e-mail: bilse at domain
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