Sunday, January 30, 2011

Protocols that provide quality of service

    * The Type of Service (TOS) field in the IP header (now superseded by Diffserv)
    * IP Differentiated services (DiffServ)
    * IP Integrated services (IntServ)
    * Resource reSerVation Protocol (RSVP)
    * Multiprotocol Label Switching (MPLS) provides eight QoS classes
    * RSVP-TE
    * Frame relay
    * X.25
    * Some ADSL modems
    * Asynchronous Transfer Mode (ATM)
    * IEEE 802.1p
    * IEEE 802.1Q
    * IEEE 802.11e
    * HomePNA Home networking over coax and phone wires
    * The ITU-T G.hn standard provides QoS by means of "Contention-Free Transmission Opportunities" (CFTXOPs) which are allocated to flows which require QoS and which have negotiated a "contract" with the network controller. G.hn also supports non-QoS operation by means of "Contention-based Time Slots".

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