This would be the out of subject but I need your help. We've been trying to setup network monitoring systems. I tried to find what is the most important to check on external network. Company has more than 20 datacenters worldwide. Is there any white paper that explain in detail? Thank you. Don Lee P.S. All datacenters have Cisco devices only. _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]