Useful tool for creating purposeful traffic control on a wire. Reports to work in GNS3. http://tldp.org/HOWTO/Traffic-Control-HOWTO/intro.html
Linux offers a very rich set of tools for managing and manipulating the transmission of packets. The larger Linux community is very familiar with the tools available under Linux for packet mangling and firewalling (netfilter, and before that, ipchains) as well as hundreds of network services which can run on the operating system. Few inside the community and fewer outside the Linux community are aware of the tremendous power of the traffic control subsystem which has grown and matured under kernels 2.2 and 2.4.
This HOWTO purports to introduce the concepts of traffic control, the traditional elements (in general), the components of the Linux traffic control implementation and provide some guidelines . This HOWTO represents the collection, amalgamation and synthesis of the LARTC HOWTO, documentation from individual projects and importantly the LARTC mailing list over a period of study.