I have a scenario where I am deploying ports on 3550 and 3560 switches to customers with a 10Mb upload limit enforced through policing.
However when downloading from the server on a machine with a 100Mb connection there is a TCP sawtooth effect and average upload is 5 or 6Mb.
My police statement looks like:
police 10000000 1000000 exceed-action drop
I'd like a smoother way of handling the policing than just dropping excess packets as this means packets being retransmitted, TCP slow starts and the average bandwidth being 5-6Mb rather than close to 10Mb.
As I understand it 3550s don't support shaping. My solution needs to work on both 3550s and 3560s so I don't think shaping is an option.
Is my only option to increase the policed bandwidth over 10Mb in order to guarantee a 10Mb upload? I know that if I change the TCP window on the downloading client this would solve it but that is not an option.
Thanks for any replies,