We're looking at putting a 3640 into into a network that will have about 2000 private IP'd workstations. There will be about 10 - 15 NAT overloaded IP's, and the 2000 private IP's will be broken down into ACL's to utilize these. Besides the NAT'd IP's there are about another 2000 - 2500 public IP's that will be routed through this router. Here is the router specs:
3640 w/ NM-1A-T3, NM-2E-2W
77824K/4096K bytes of memory
125K bytes of non-volatile configuration memory
16384K bytes of processor board System flash
Do you think that this router will be able to handle the routing of this network with the amount of NAT needed.