Alcatel-Lucent 7750 SR OS Service Manual page 114

Service router - mobile gateway

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ATM VLL (Apipe) Services

PE1, PE2, and PE3 receive standard UNI/NNI cells on the ATM Service Access Point (SAP) that

are then encapsulated into a pseudowire packet using the N:1 cell mode encapsulation or AAL5

SDU mode encapsulation according to draft-ietf-pwe3-atm-encap-xx.txt, Encapsulation Methods

for Transport of ATM Over MPLS Networks. When using N:1 cell mode encapsulation, cell

concatenation into a pseudowire packet is supported. In this application, the setup of both VC and

VP level connections are supported.

The ATM pseudowire is initiated using Targeted LDP (TLDP) signaling as specified in draft-ietf-

pwe3-control-protocol-xx.txt, Pseudowire Setup and Maintenance using LDP. The SDP can be an

MPLS or a GRE type.

7750 SR OS Services Guide