Bill Nash wrote: > Correlate ARP cache to bridge tables. You can do it from your core > switches as a start. It's THE best way for finding anything talking on > your network. > That is exactly what I did, after a lot of pinging and checking the ARP cache I created our network weather map.. :) (http://www.network-weathermap.com) In combination with MRTG(/Nagios/Smokeping) this is a nice tool to monitor your network and the traffic flow through your network..
Frank Zwart > - billn > > On Sun, 28 Oct 2007, Sami Joseph wrote: > > >> Hi Roland, >> >> Thanks. >> >> The point is i dont really know all the devices we have, so i cant be sure >> that they all have snmp and CDP configured. >> >> Is there a way around that? >> >> on the top of my head, i would do a port scan and based on that i would go >> into each device and make sure each has SNMP and CDP before i start >> discovering. >> >> Which open source one would you recommend ? >> >> How about CiscoWorks? >> >> Thanks, >> Sam >> >> On 10/28/07, Roland Dobbins <[EMAIL PROTECTED]> wrote: >> >>> On Oct 28, 2007, at 3:27 PM, Roger Oliver wrote: >>> >>> >>>> I'm very interested to hear what others do. >>>> >>> PacketDesign RouteExplorer does good visualizations based upon BGP >>> and IGP, and Narus InSight Manager does visualization based upon >>> BGP. There are also tools like lanmap, which watch packets via RSPAN >>> in a given locality. >>> >>> Several of the open source and commercial NMS systems do SNMP-based >>> autodiscovery; it's important to test these out and ensure they're >>> tuned not to be overly aggressive prior to running the autodiscovery, >>> monitor your network while it's taking place, do it during a >>> maintenance window, etc. >>> >>> Some folks use GraphViz with a bit of Perl-fu on their configs to >>> generate graphs, too. >>> >>> ----------------------------------------------------------------------- >>> Roland Dobbins <[EMAIL PROTECTED]> // 408.527.6376 voice >>> >>> I don't sound like nobody. >>> >>> -- Elvis Presley >>> >>> _______________________________________________ >>> cisco-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/cisco-nsp >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ >>> >>> >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> >> > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
