Atm Vll (Apipe) Services; Atm Vll For End-To-End Atm Service; Figure 31: Atm Vll For End-To-End Atm Service - Alcatel-Lucent 7750 SR Manual

ATM VLL (Apipe) Services

This section provides information about the Apipe service and implementation notes.
Topics in this section include:
•
•
•
•

ATM VLL For End-to-End ATM Service

Apipe Services
CE1
ATM
ATM1
UNI
ATM Cells
ATM VLLs (Apipe) provide a point-to-point ATM service between users connected to 7750 SR
nodes on an IP/MPLS network. Users are either directly connected to a 7750 PE or through an
ATM access network. In both cases, an ATM PVC (for example, a virtual channel (VC) or a virtual
path (VP)) is configured on the 7750 PE. This feature supports local cross-connecting when users
are attached to the same 7750 PE node. VPI/VCI translation is supported in the ATM VLL.
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
Page 180
ATM VLL For End-to-End ATM Service on page 180
ATM Virtual Trunk Over IP/MPLS Packet-Switched Network on page 182
Common Configuration Tasks on page 241
→
Configuring VLL Components on page 242
−
Creating an Apipe Service on page 242
Service Management Tasks on page 285
PVC/SPVC
ATM
ATM3
ATM Cells

Figure 31: ATM VLL for End-to-End ATM Service

APS Protected
Links
(ATM-MPLS
Network IWF)
7750 SR
ATM2
IP/MPLS
PE 1
7750 SR
CE3
ATM
UNI
ATM Cells
(ATM-MPLS
Network IWF)
ATM
7750 SR
PW
PE 2
ATM
PW
PE 3
ATMoMPLS
MPLS
POS/GigE
7750 SR OS Services Guide
CE2
ATM
UNI
ATM
UNI
CE4
ATM Cells
OSSG053