Can anyone refer me to Cisco specs on dimensioning of the 2800 and 3800 routers? I need to know what throughput they can handle, number of simultaneous NATs, number of firewall rules, etc.
I have looked at the specs on the Cisco webpage but nothing has that kind of detail.
Will a 3800 even handle more than a 2800 or is it just a bigger chasis (for add-on cards) with the same mainboard processing capabilities?
Any points to help choose the right model for my business would be great.
The 3845 is rated to T3 with concurrent services. Here a blurb from the portable product sheet:
"The ISRs are designed with the ability to run multiple concurrent services (FW, NAT, IDS, QoS, etc.) at wire-speed."
You should be fine with a 3845 right now. If you plan on stepping past a T3 in the lifetime of this router then I would recommend moving to a different platform. One possibility is a 6500 series chassis with WAN blades and a firewall services module. Other options include the 7200VXR series and the 7600.
Cost is often the driving factor. If it wasn't, then we would all be running a CRS-1. :)