I'm attempting to do a baseline analysis of my entire network from my core switch using Sniffer Pro 3.5 (although I also have Etherpeek and Cisco's Network Analysis Module NAM - Traffic Director software as well)). In short Sniffer's price tag has gotten a little to steep for a non-profit organization budget. The question is this when I do a "SHOW SYS" at the CLI interface of my catalyst 5500 core switch it says I'm only averaging 10%. Is this 10% of my 3.2Gbp backplane or what? Also is Sniffer or Etherpeek able to give more of an accurate analysis if I SPAN the entire VLAN to a monitor port? Or should I use the Cisco NAM that part of the core to gather the information. I was told by the Cisco TAC that the NAM has a 450MB connection to the backplane and that it will over run very quickly. I'm at my wits end on this one. No amount of documentation gives me a clue on what to do. Please help, Thank you. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6673&t=6673 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]