ATM VLL (Apipe) Services
Page 114 7750 SR OS Services Guide
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.
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