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@xxxxxxxxxx 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
