We have a c7206XVR with a npe 400 and a c7609 with sup720. These routers are connected with an OC3 circuit which suppose to has a maximum throughput of 155Mb/s. The 7206 is using a PA-POS-1OC3 and the 7609 is using a PA-POS-2OC3. But for some reason the circuit can only reach maximum of 80mb/s, even when we use a traffic generator to test it. At 80mb/s the 7206xvr cpu has reached around 89%, and the 7609 has just only reached around 15%.
These router both have GigEhternets to connect to their LAN core switches.
We did talk to the telco and they checked and found no issue on the circuit.