I use traffic shaping in MonoWall (BSD) to great advantage with my home connection. It has been quite some time since I've had any kind of issues where user interaction with the internet has seen any annoyance caused by anything on the local network.
I've read some traffic shaping theory documentation, and the usefulness of shaping upload cannot be argued. But, I'm at a crossroads as to whether I should use limitations on download or not.
The opposed schools of thought are:
- If traffic has made it across the network/internet to arrive at your router, to drop or delay any part of it is misguided at best, and an insult/damage to the network (in forcing it to resend things) at worst.
- If some services/machines are "over-demanding" data, then some of that returned data is probably already being dropped upstream before it gets to the router, which can cause bad things, like DNS responses and ACKs being dropped.
So, all that said, does implementing shaping on downloads make sense, or is it wasteful over-control?