Diff-serv motivations
#1. Economics of ISPs (access and transit providers) dictates need for service differentiation
- IP provides just a best effort service
- TOS is used in a non-standard way, and could be redefined to be more useful
- Work done in pricing aspects of SLAs did not fit into IP because of a lack of header bits
- ISPs, not IETF, should define services
- Some services could be end-to-end, but here IETF would standardize only building blocks