There is a router Cisco 3640 in the central office that has a 576 K bandwidth to the Internet. Now, the traffic on the serial link (to Internet router) is close to 100% (570 - 575 k /sec). I see that this traffic is the input rate. THe output rate is lesser.
I used PRTG tool and found that there are no non-unicast packets. I want to know who is causing the high bandwidth. THe number of users are close to 300. Can anybody help me on how do I know the problem machine here or the machine that is causing a lot of WAN traffic? I heard that show ip accounting can be a good tool but it is hard to point out where exactly is the problem
Please help.
Thanks a lot Gautam