A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Generic Connection Admission Control (GCAC) Algorithm Specification for IP/MPLS Networks
Author(s) : Gerald Ash
Dave McDysan
Filename : draft-ash-gcac-algorithm-spec-03.txt
Pages : 26
Date : 2011-12-05
This document presents a generic connection admission control (GCAC)
reference model and algorithm for IP/MPLS-based networks. Service
provider (SP) IP/MPLS networks need an MPLS GCAC mechanism, for
example, to reject voice over Internet Protocol (VoIP) calls when
additional calls would adversely affect calls already in progress.
Without MPLS GCAC, connections on congested links will suffer
degraded quality. The MPLS GCAC algorithm can be optionally
implemented in vendor equipment and deployed by service providers.
MPLS GCAC interoperates between vendor equipment and across multiple
service provider domains. The MPLS GCAC algorithm uses available
standard mechanisms for MPLS based networks, such as RSVP, DSTE, PCE,
NSIS, DiffServ, and OSPF. The MPLS GCAC algorithm does not include
aspects of CAC that might be considered vendor proprietary
implementations, such as detailed path selection mechanisms. MPLS
GCAC functions are implemented in a distributed manner to deliver the
objective QoS for specified QoS constraints. The objective is that
the source is able to compute a source route with high likelihood
that MPLS GCAC via elements along the selected path will in fact
admit the request. In some cases (e.g., multiple AS) this objective
cannot always be met, but the document summarizes methods that
partially meet this objective. MPLS GCAC is applicable to any
service or flow that must meet an objective QoS (delay, jitter,
packet loss rate) for a specified
quantity of traffic.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ash-gcac-algorithm-spec-03.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ash-gcac-algorithm-spec-03.txt
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