With all the spam coming into our mail server, I was curious to find out how much bandwidth it is using. Our network services provider hooked into the Cisco switch and monitored the port where the internet router is connected. He used Network Instruments Observer Suite - It was pretty nice. We could see all traffic by IP address, host name, protocol type, etc. I like this as a troubleshooting tool, but I am sure I don't need all the functionality of the Observer suite. Any recommedations for a tool that will allow me to monitor all traffic on a port and break it down like I mentioned above? I would also like to be able to monitor more than one port on the switch at a time. Cheaper is better! Thanks.
Chris.