Contains lots of technical information, comments from the kernel
Slides by Jamal Hadi, one of the authors of Linux traffic control
HTML version of Alexeys LaTeX documentation - explains part of iproute2 in great detail
Sally Floyd has a good page on CBQ, including her original papers. None of it is Linux specific, but it does a fair job discussing the theory and uses of CBQ. Very technical stuff, but good reading for those so inclined.
Yet another HOWTO, this time in Polish! You can copy/paste command lines however, they work just the same in every language. The author is cooperating with us and may soon author sections of this HOWTO.
Discussion on how to use Linux in a diffserv compliant environment. Pretty far removed from your everyday routing needs, but very interesting none the less. We may include a section on this at a later date.
>From the helpful folks of Cisco who have the laudable habit of putting their documentation online. Cisco syntax is different but the concepts are the same, except that we can do more and do it without routers the price of cars :-)
Required reading if you truly want to understand TCP/IP. Entertaining as well.