If all you did was type 'ip routing' on the switches, you probably lost your default gateway.With ip routing disabled, the switch relies on the 'ip default-gateway' command to see how to communicate with other networks.Once you enable ip routing, we ...
This is normal. The 3750 doesn't keep statistics for "Distributed Cache", which is what is handling nearly all of these packets.As long as your CPU stays down, you can be assured the box is doing its job.
Even though the 3750 has "L3 Capabilities", it only uses them if you design your network such that it uses them. If you don't tell your PC's to use the switch as their default gateway, the 3750 will only be a L2 switch, which doesn't require any rou...