Try Nagios, NetMap, or Nomad. None of these will give you what you are asking for without some serious work on your part. If you are using Cisco devices there will be some things that will need to be enabled. Secondly you will leave the switch open to some serious issuew with intruders. If you need to see what is happening with the switch you might look at the Vendor software, IE CiscoWorks for Cisco devices. While far from perfect, it does a decent job of giving the information you asked about. Michael Lineback "James Kosin" <jkosin@intcomgrp.com> Sent by: fedora-list-admin@redhat.com 11/19/2003 10:31 EST Please respond to fedora-list To: <fedora-list@redhat.com> cc: "Chiu, PCM (Peter) " <P.C.M.Chiu@rl.ac.uk> bcc: Subject: Re: Network monitor Network monitorDear Chiu, PCM (Peter), There is no monitoring of network switches without software on the switch to do the monitoring. Here is the basic operation of a switch. 1) A switch tries to remember how to get to a specific destionation. If it knows that a destination is on port #3 (10.0.0.3) and port #1 (10.0.0.1) is trying to reach #3. The network packets go directly from #1 to #3 without messing with the other ports. With a HUB, everyone sees this activity. 2) Switches do this to help speed up the network and make things more efficent. Note; you may get a few stray packets if the switch is still trying to find out where everyone is. But, once everyone is located, packets rarely get sent to everyone like with a HUB. 3) Some switches may have ways of monitoring network activity. Don't ask me witch ones..... I really don't know. Good Luck, James Kosin ----- Original Message ----- From: Chiu, PCM (Peter) To: fedora-list@redhat.com Cc: Chiu, PCM (Peter) Sent: Wednesday, November 19, 2003 9:50 AM Subject: Network monitor Maybe I start a new query. I wonder if there is a suitable network monitoring tool that can reveal 100/1000BT network switches and end systems. I have looked at ethereal and traceroute under system tools, but they don't quite show the interconnecting network switches. Many thanks in advance. Peter -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: <A HREF=http://www.redhat.com/mailman/listinfo/fedora-list>http://www.redhat.com/mailman/listinfo/fedora-list</A>