Average and median IP packet size over the Internet?
Anyone know of any studies documenting this? A know that IP packets over the Internet tend to be smaller rather than larger, but I wondered if anyone has published something. Bill Goldstein Senior Internet Specialist AT&T wgoldstein@att.com TEL:(412)642-7288
no publised, but from my real-world router: nyc6>sho ip cach flo IP packet size distribution (448264806 total packets): 1-32 64 96 128 160 192 224 256 288 320 352 384 416 448 480 .000 .577 .079 .040 .025 .012 .008 .007 .007 .010 .006 .006 .004 .004 .003 512 544 576 1024 1536 2048 2560 3072 3584 4096 4608 .002 .004 .075 .015 .106 .000 .000 .000 .000 .000 .000 57.7% are 64 bytes. Sampling of over 448 million (1/2 billion) packets. 1 day, 3 hour sample. Interesting/neat spike at 576 and 1536. IP Flow Switching Cache, 4456448 bytes 10093 active, 55443 inactive, 20096291 added 99408180 ager polls, 0 flow alloc failures Exporting flows to 207.99.5.189 (2055) Exporting using source interface Loopback0 Version 5 flow records, origin-as 20093196 flows exported in 716895 udp datagrams, 0 failed last clearing of statistics 1d03h On Mon, 27 Apr 1998 Goldstein_William@bns.att.com wrote:
Anyone know of any studies documenting this? A know that IP packets over the Internet tend to be smaller rather than larger, but I wondered if anyone has published something.
Bill Goldstein Senior Internet Specialist AT&T wgoldstein@att.com TEL:(412)642-7288
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Atheism is a non-prophet organization. I route, therefore I am. Alex Rubenstein, alex@nac.net, KC2BUO, ISP/C Charter Member Father of the Network and Head Bottle-Washer Net Access Corporation, 9 Mt. Pleasant Tpk., Denville, NJ 07834 Don't choose a spineless ISP! We have more backbone! http://www.nac.net -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
On Mon, 27 Apr 1998 Goldstein_William@bns.att.com wrote:
Anyone know of any studies documenting this? A know that IP packets over the Internet tend to be smaller rather than larger, but I wondered if anyone has published something.
You are likely to find that sort of thing here http://www.caida.org/ -- Michael Dillon - Internet & ISP Consulting http://www.memra.com - E-mail: michael@memra.com
On Mon, Apr 27, 1998 at 04:44:15PM -0700, Michael Dillon wrote: On Mon, 27 Apr 1998 Goldstein_William@bns.att.com wrote:
Anyone know of any studies documenting this? A know that IP packets over the Internet tend to be smaller rather than larger, but I wondered if anyone has published something.
You are likely to find that sort of thing here http://www.caida.org/ right now it's at http://www.nlanr.net/NA/Learn/packetsizes.html (pointed to from http://www.nlanr.net/NA/tutorial.html specifically http://www.nlanr.net/NA/Learn/plen.970625.gif from 1997 note difference if you look at in terms of packets vs bytes (sorry to those who have heard this a million times; am trying to only say it once a week whether need to or not): more than half the *packets* are mice, more than half the *payload* are elephants [note that CAIDA hopes to update this whole tutorial thing by summer (some data quite old), willing hands/brains cooperating so don't holler at me for archaic questions/answers, but now is the time to provide suggestions on things you'd like included/extended/cut, don't wait till you're disappointed] but packet sizes aren't changing that fast anyway; am as we speak am submitting an Inet'98 paper with mcifolk that has stats not far off from above i.e., packets getting a little larger, but not enough to buy/sell any stock over also, fwiw (have beat this URL into the ground by now, re-sorry broken record-ness): http://www.vbns.net/presentations/papers/MCItraffic.ps has mucho cool, surprisingly hard to come by WAN backbone stats by amazingly dedicated angels of MCI/NSF's vBNS project (US tax dollars + MCI karma at yummy work... tho warning TEST the postscript before you print it (<<i speak for the trees!>>); and it craves a color printer) and as already demonstrated by Al Reuben and many others@nanog could show you, real world routers (well, on planet Cisco anyway, which seems to support life) can give you this very distribution at your whim (k learns: it's possible that all customers have to do is ask for stat collection louder and longer than they ask for other stuff and some of it gets implemented mmmm.. just like everything else in life) k
participants (4)
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Al Reuben -
Goldstein_William＠bns.att.com -
k claffy -
Michael Dillon