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RFC 5352
Title: Aggregate Server Access Protocol (ASAP)
Author: R. Stewart, Q. Xie,
M. Stillman, M. Tuexen
Status: Experimental
Date: September 2008
Mailbox: randall@lakerest.net,
Qiaobing.Xie@gmail.org,
maureen.stillman@nokia.com,
tuexen@fh-muenster.de
Pages: 53
Characters: 118712
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-rserpool-asap-21.txt
URL: http://www.rfc-editor.org/rfc/rfc5352.txt
Aggregate Server Access Protocol (ASAP; RFC 5352), in conjunction
with the Endpoint Handlespace Redundancy Protocol (ENRP; RFC 5353),
provides a high-availability data transfer mechanism over IP
networks. ASAP uses a handle-based addressing model that isolates a
logical communication endpoint from its IP address(es), thus
effectively eliminating the binding between the communication
endpoint and its physical IP address(es), which normally constitutes
a single point of failure.
In addition, ASAP defines each logical communication destination as a
pool, providing full transparent support for server pooling and load
sharing. It also allows dynamic system scalability -- members of a
server pool can be added or removed at any time without interrupting
the service.
ASAP is designed to take full advantage of the network level
redundancy provided by the Stream Transmission Control Protocol
(SCTP; RFC 4960). Each transport protocol, other than SCTP, MUST
have an accompanying transport mapping document. It should be noted
that ASAP messages passed between Pool Elements (PEs) and ENRP
servers MUST use the SCTP transport protocol.
The high-availability server pooling is gained by combining two
protocols, namely ASAP and ENRP, in which ASAP provides the user
interface for Pool Handle to address translation, load sharing
management, and fault management, while ENRP defines the high-
availability Pool Handle translation service. This memo defines an
Experimental Protocol for the Internet community.
This document is a product of the Reliable Server Pooling Working Group of the IETF.
EXPERIMENTAL: This memo defines an Experimental Protocol for the
Internet community. It does not specify an Internet standard of any
kind. Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
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