My office has a 150Mbps synchronous fiber, burstable to 250Mbps.
Based on a document I found, my Cisco 1941 is capable of 153Mbps MAX:
I was seeing these speeds on average 50Mbps, with bursts every now and again for 100-300Mbps; starting 2 weeks ago, I was barely able to get 16Mbps. I have since rebooted all my switches and the Cisco 1941, but I'm still not able to get more than 60Mbps.
How do I determine if my Cisco 1941 is performing properly? How do I verify I'm getting maximum throughput on my router? Why is my Cisco 1941 not able to perform higher than 60Mbps consistently?
I'm testing performance using an ISP provided performance tool. Connecting directly to the ISP provided router/gateway, I see 80Mbps UP/140Mbps DOWN. Behind my own router, I see less than 40Mbps UP and less than 50Mbps DOWN.
I have flow monitors watching incoming and outgoing traffic as well, which confirm what I see behind my router.
My ISR acts as a firewall, NAT/port-forwarding and SSL VPN server.