With complex QoS, I've seen a 2811 handle about 20 Mbps (duplex) on a T3, where it tops out the CPU. From its Mpps rating, a 2851 might just about handle a T3, but haven't seen one in action.
Much depends on just how much traffic you'll routinely push across the T3. In my case of the 2811 on a T3, normal traffic doesn't usually exceed 10 to 15 Mbps on the T3, and at that volume level, it seems to work well.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...