I have recently upgraded our corporate internet link to 70Mbps service. I also installed a new screening router that sits between our Bell router and our firewall. When testing the download speed it appears that we cap out at 45Mbps and I notice that the 2651XM CPU hits 90 percent during this download. My feeling is that we are being limited b/c of the router CPU. The router has 256Mb of memory and is running Version 12.4(15)T7. Is this normal for the router CPU to hit 90 percent for 45Mb(bits)ps of thruput ? I do have CEF enabled on the router as I had read that was the best way of route switching packets.
Any help would be appreciated.