Expedited Forwarding (EF) PHB

Expedited forwarding (EF) guarantees that packets with the recommended EF codepoint 46 (101110) receive the best treatment that is available on release to the network. Expedited forwarding is often compared to a leased line. Packets with the 46 (101110) codepoint are guaranteed preferential treatment by all Diffserv routers en route to the packets' destination. For technical information about EF, refer to RFC 2598, An Expedited Forwarding PHB.