RFC 1946 (rfc1946) - Page 1 of 21
Native ATM Support for ST2+
Alternative Format: Original Text Document
Network Working Group S. Jackowski
Request for Comments: 1946 NetManage Incorporated
Category: Informational May 1996
Native ATM Support for ST2+
Status of This Memo
This memo provides information for the Internet community. This memo
does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.
Abstract
As the demand for networked realtime services grows, so does the need
for shared networks to provide deterministic delivery services. Such
deterministic delivery services demand that both the source
application and the network infrastructure have capabilities to
request, setup, and enforce the delivery of the data. Collectively
these services are referred to as bandwidth reservation and Quality
of Service (QoS).
The IETF is currently working on an integrated services model to
support realtime services on the Internet The IETF has not yet
focused on the integration of ATM and its inherent QoS and bandwidth
allocation mechanisms for delivery of realtime traffic over shared
wires. (ATM hardware and interfaces provide the network
infrastructure for the determinitic data delivery, however the host
resident protocol stacks and applications need more attention.)
Current IETF efforts underway in the IP over ATM (ipatm) working
group rely on intserv, rsvp and ST2 to address QoS issues for ATM. As
such, RFC 1577 and the ATM Forum's Lan Emulation do not provide
direct QoS and bandwidth allocation capabilities to network
applications. Without providing a mapping of reservations-style QoS
to ATM signalling, ATM will remain a 'wire' rather than a shared
media infrastructure component.
This memo describes a working implementation which enables
applications to directly invoke ATM services in the following
environments:
- ATM to internet,
- internet to ATM, and
- internet to internet across ATM.
Jackowski Informational