RFC 4816:Pseudowire Emulation Edge-to-Edge (PWE3) ...
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ATM


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... transparent cell transport service allows migration of ATM services to a PSN ...
... services to a PSN without having to provision the ATM subscriber or customer edge ...
... customer edge (CE) devices. The ATM CEs will view the ATM ...
... CE) devices. The ATM CEs will view the ATM transparent cell transport service ...
... TDM) leased line. This service is most likely to be used as an internal function in an ATM service provider's network as a way to connect existing ATM ...
... ATM service provider's network as a way to connect existing ATM switches via a higher-speed PSN ...
... switches via a higher-speed PSN, or to provide ATM "backhaul" services for remote access to existing ATM ...
... ATM "backhaul" services for remote access to existing ATM networks. ...


... transport mode for PWE3 ATM encapsulation described in [2], and MUST be used with pseudowires ...
... 2], and MUST be used with pseudowires of type 0x0003, "ATM transparent cell transport" [4]. ...
... 4]. The ATM transparent port service emulates connectivity between two ...
... port service emulates connectivity between two remote ATM ports. This service is useful when one desires to connect ...
... layer. The ingress PE discards any idle/unassigned cells received from the ingress ATM port, and maps all other received cells to a single pseudowire ...
... Priority (CLP) bits when it sends these cells on the egress ATM port. Therefore, the transparent port service ...
... port service appears to emulate an ATM transmission convergence layer connection ...
... 3], the ingress PE MUST NOT exceed the value of the "Maximum Number of concatenated ATM cells" Pseudowire Interface ...
... PE. ATM Operations and Management (OAM) cells MUST be transported ...
... pseudowire failure between them, they do not generate any OAM cells, but rather bring down the ATM interfaces to the CEs (e.g., ...
... CEs (e.g., generating LOS on the ATM port), just as if it were a transmission layer ...
... layer failure. Similarly, ATM Integrated Local Management Interface (ILMI) signaling ...


... but those issues are not affected by the application specified herein. Note that the security of the transported ATM service will only be as good as the security ...
... PSN. This level of security might be less rigorous than a native ATM service. ...


... cell transport mode for PWE3 ATM encapsulation described in [2], the ...
... PWE3 Working Group is also undertaking additional work on ATM-related congestion issues, and implementers ...
... should anticipate that an RFC will be published describing additional congestion control techniques that should be applied to ATM emulation over pseudowires. ...


... Encapsulation Methods for Transport of Asynchronous Transfer Mode (ATM) over MPLS Networks", RFC 4717prop, December 2006. ...



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