I have a customer with a requirement to do performance analysis, capacity planning, network optimization, and network documentation on carrier-grade networks. Very few of the tools I'm used to working with (NetMaker, Comnet, etc.) can do this kind of analysis on hybrid voice/data networks. Does anyone have any experience with any software packages that could address one or more of the above requirements? The networks we need to model consist of a mixture of TDM, FastPacket, and IP traffic running over an eclectic mix of topologies, including T1, E1, FR, ATM (DS3), and OC-3 SONET. It would be helpful if the software could perform failure analysis scenarios on selected components of the network. Thanks in advance for your help. Larry Deleski Cisco Systems ldeleski@cisco.com lad@inficad.com