A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Reliable Server Pooling Working Group of the IETF.
Title : Aggregate Server Access Protocol (ASAP)
Author(s) : R. Stewart, Q. Xie, M. Stillman, M. Tuexen
Filename : draft-ietf-rserpool-asap-08.txt
Pages : 44
Date : 2003-10-27
Aggregate Server Access Protocol (ASAP) in conjunction with the
Endpoint Name Resolution Protocol (ENRP) [6] provides a high
availability data transfer mechanism over IP networks. ASAP uses a
name-based addressing model which 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) RFC2960 [4]. Each transport protocol to be used by Pool
Elements (PE) and Pool Users (PU) MUST have an accompanying
transports mapping document. Note that ASAP messages passed between
PE's and ENRP servers MUST use SCTP.
The high availability server pooling is gained by combining two
protocols, namely ASAP and ENRP, in which ASAP provides the user
interface for name to address translation, load sharing management,
and fault management while ENRP defines the high availability name
translation service.
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