Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!pyrdc!jetson!decuac!bacchus.pa.dec.com!mogul From: mogul@wrl.dec.com (Jeffrey Mogul) Newsgroups: comp.dcom.lans Subject: Re: How can ethernet traffic be measured? Keywords: ethernet, traffice, lan Message-ID: <1990Oct30.020149.8977@wrl.dec.com> Date: 30 Oct 90 02:01:49 GMT References: <288@asihub.autosys.com> <8011@gollum.twg.com> Sender: news@wrl.dec.com (News) Organization: DEC Western Research Lines: 22 In article <8011@gollum.twg.com> david@twg.com (David S. Herron) writes: >> Does UNIX provide any commands for gathering network performance >> statistics? > >From my days as a system/network admin there's one piece of software >out there I wholeheartedly reccomend.. That's NNStat > >NNStat is a daemon which runs on (at least) SunOS systems. It puts >the interface into promiscuous mode and using the NIT driver (Network >Interface Tap) it starts grabbing all the packets it can possibly >grab on the network. I've been helping the NNstat crew port their software to Ultrix (4.0 or later, using the "packetfilter" facility). Right now, they are testing pre-release versions of a new version; when they actually release the version that includes Ultrix support, I'm sure it will be announced here. Of course, anyone with a little free time could obtain the older sources and do their own port :-). -Jeff