PPP Over AAL5 (RFC2364)
Original Publication Date: 1998-Jul-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
G. Gross: AUTHOR [+5]
The Point-to-Point Protocol (PPP)  provides a standard method for transporting multi-protocol datagrams over point-to-point links.
Network Working Group G. Gross
Request for Comments: 2364 Lucent Technologies
Category: Standards Track M. Kaycee
PPP Over AAL5
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1998). All Rights Reserved.
The Point-to-Point Protocol (PPP)  provides a standard method for
transporting multi-protocol datagrams over point-to-point links.
This document describes the use of ATM Adaptation Layer 5 (AAL5) for
framing PPP encapsulated packets.
This specification is intended for those implementations which desire
to use the facilities which are defined for PPP, such as the Link
Control Protocol, Network-layer Control Protocols, authentication,
and compression. These capabilities require a point-to-point
relationship between the peers, and are not designed for the multi-
point relationships which are available in ATM and other multi-access
ATM AAL5 protocol is designed to provide virtual connections between
end stations attached to the same network. These connections offer a
packet delivery service that includes error detection, but does not
do error correction.
Most existing implementations of PPP use ISO 3309 HDLC as a basis for
their framing .
When an ATM network is configured with point-to-point connections,
PPP can use AAL5 as a framing mechanism.
The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,
SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL, when they appear in this
document, are to be interpreted as described in .
3. AAL5 Layer Service Interface
The PPP layer treats the underlying ATM AAL5 layer service as a bit-
synchronous point-to-point link. In this context, the PPP link
corresponds to an ATM AAL5 virtual connection. The virtual
connection MUST be full-duplex, point to point, and it MAY be either
dedicated (i.e. permanent, set up by provisioning) ...