WAN-Sim.net Network Emulators Network Simulators TCP Stack TCP/IP Tuning Network Testing Network Monitoring Network Sniffing 1U Rackmount Chassis Custom-Chassis.com Linux-1U.net 1U-ITX.net ITX-Blades.net Small PC cases Mini-Box.net Wrap-Box.net Wrap-OS.net Wan-Sim.net Linux-Consulting.com Linux-CAE.net Linux-Sec.net Linux-Boot.net Linux-Backup.net Linux-Wireless.org Linux-Office.net Linux-Video.net Linux-VOIP.net Linux-Jobs.net Linux-Diff.net 1U-Raid5.net Linux-Howto.net Spam Reporting Free Linux CDs ISO9660.org Distro-CD.org Patch-CD.org Contact Linux is a registered trademark of Linus Torvalds More Linux Legalese

Wan-Sim.net/Monitoring Viewing the Network Performance ( new in gigEnn ) You can see the bandwidth results with many different tools ethereal.com trafshow an easy way to see which machines are overloading the network netstat generic netstat cannot be used for xplot ( graphs ) Use our modified and enhanced netstat gigEnn# netstat.nn ntop invoke ntop in one xterm window gigEnn# ntop additionally, ntop requires apache and mozilla for viewing: mozilla localhost:5000 ameslab.gov NetPIPE = Network Protocol Independent Performance Evaluator tcpdump lots of data .. typically keeps the network admins happy tcpdump.org related links psc.edu tcpdump grapher ohiou.edu tcptrace - reads tcpdump sony.co.jp tcpdrpiv - reads tcpdumo sony.co.jp tcpdstat - reads tcpdump frenchfries.net tcpstat Graphs mrtg too much (snmp) headache for fancy graphs ?? gnuplot xplot gigEnn# netstat.xplot.nn gigEnn# xplot /tmp/netstat.xplot.data osdl.org ^ TCP Probe plot jitter differences in receive time values Estimating Bandwidth see apps and links above Estimating Loss research.att.com icir.org ucsd.edu sting sprint.com washington.edu scriptroute washington.edu tulip

Copyright © 2000	Linux-Consulting	All Rights Reserved.	Updated: Thu Mar 8 22:45:45 2007 PDT