I have resently upgraded one of our area border router(ospf) from a 2620 model to a 2811. I had two point-to-point T1s one connecting to the backbone and another to another ABR.
Febore I upgraded the router I had monitor the traffic from both T1s for about one moth to sort of have a baseline of its traffic which is mosthly RDP connections and minor file transfers. Both T1's reliability were 11/255 for txload and 2/255 for rxload.
After the upgrade to the 2811 I have noticed that one of the two T1 connecting to another ABR is constantly at 250/255 for txload and 70/255 for rxload, and it has been as such constantly since the upgrade, also there are no CRC errors/Collisions/throttles/runs/or gianst seen so I know the line is clean and this wan confirmed by the provider after I requested T1 monitoring.
My LAN interfaces on the new 2811 are 1/255 rx and 5/255 tx so I know there is not much LAN traffic going on.
Router IOS version 12.4(3f)
What could be causing this anomality?