nanog mailing list archives
Re: recent internet packet size samples
From: Mark Milhollan <mlm () ftel net>
Date: Thu, 27 Jul 2000 10:41:20 -0700
Bill Woodcock writes:
> I'm interested in seeing the distribution of packet sizes across a > 1500-byte-constrained measurement point, with "real internet traffic" > going past (for some reasonable interpretation of that phrase). Protocol Total Flows Packets Bytes Packets Active(Sec) Idle(Sec) -------- Flows /Sec /Flow /Pkt /Sec /Flow /Flow Total: 758613841 176.6 2 1170 440.8 6.1 14.6
I.e., on cisco routers with "Flow switching" enabled on all interfaces you want data included from, the router will give you that ...
show ip cache flow
IP packet size distribution (1242M total packets): 1-32 64 96 128 160 192 224 256 288 320 352 384 416 448 480 .001 .436 .050 .018 .012 .008 .006 .005 .004 .005 .004 .006 .004 .003 .004 512 544 576 1024 1536 2048 2560 3072 3584 4096 4608 .003 .003 .071 .030 .318 .000 .000 .000 .000 .000 .000 [...] Protocol Total Flows Packets Bytes Packets Active(Sec) Idle(Sec) -------- Flows /Sec /Flow /Pkt /Sec /Flow /Flow [...] Total: 55814697 43.4 22 581 965.3 5.1 7.9 Indeed, if you use the export mechanism you can capture the details behind this summary and analyze it pretty much as you like. #ip flow-export destination cflowd-machine #ip flow-export version 5
Current thread:
- recent internet packet size samples Joe Abley (Jul 27)
- Re: recent internet packet size samples Bill Woodcock (Jul 27)
- Re: recent internet packet size samples Mark Milhollan (Jul 27)
- Re: recent internet packet size samples Joe Abley (Jul 27)
- Re: recent internet packet size samples Yu Ning (Jul 30)
- Re: recent internet packet size samples jlewis (Jul 30)
- Re: recent internet packet size samples Mark Milhollan (Jul 27)
- Re: recent internet packet size samples Bill Woodcock (Jul 27)