ITU-T - International Telecommunication Union/ITU Telcommunication Sector
适用范围
This Recommendation describes a layer network that facilitates the transport of arbitrary client services over arbitrary server networks. An example of client services include ATM@ frame relay@ low-rate TDM@ and Ethernet. An example of server layers include MPLS@ Ethernet@ IP@ and PDH/SDH/OTN using the generic framing procedure (GFP). The layer network is called the pseudowire (PW) layer and is suitable for both single and multisegment transport. This Recommendation does not preclude the use of other adaptations@ and in many cases alternative mechanisms are preferable. This Recommendation is not intended to redefine the behaviour of the protocols specified in the normatively referenced IETF RFCs. In the event of discrepancies between protocols in this Recommendation and the normative RFCs@ the IETF RFC is the authoritative source.