RAF@NIHCU.BITNET ("Roger Fajman") (05/16/88)
Does anyone have any data on the distribution of packet sizes on an Ethernet?
retrac@RICE.EDU (John Carter) (05/17/88)
Roger,
When I ran a series of traces of our ethernet (which my or may not
be particularly representative), I found that most packets were either
very small (e.g. ARP, RIP, telnet packets) or very large (e.g. FTP).
Small packets were the most common. Large packets tended to come in
bursts (such as when a user loads a file in to a workstation). Medium
sized packets were fairly uncommon.
There is a paper entitled "Network Measurement of the VMTP
Request-Response Protocol in the V Distributed System" by Cheriton
and Williamson in 1987 ACM Sigmetrics Conference on Measurement and
Modeling of Computer Systems. They found that there was a similar
distribution for VMTP packets.
John Carter
Rice University
retrac@rice.eduogud@CHAKRA.CS.UMD.EDU (Olafur Gudmundsson) (05/18/88)
> Does anyone have any data on the distribution of packet sizes on an > Ethernet? I have some that shows that most of the traffic is either verry small packets <120 or big >= 1024. The packet size is dependant on type of machines, protcols and usage. The statistics that have been collected here are for large Ethernet with over 100 Ethernet devices 90 of which are WS (all have their own disk). If there is intrest I can post the main results. ____________________________________________________________________________ Olafur Gudmundsson Dept. of Computer Science University of Maryland ARPA: ogud@brillig.umd.edu UUCP: {...!}uunet!mimsy!ogud Tel: (301)-454-6497 (w) UPS: College Park MD. 20742 ATT: (301)-595-4154 (h)