A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : ALTO Extensions for Traffic Engineering (TE) performance metrics in JSON format
Author(s) : Qin Wu
Young Lee
Dhruv Dhody
Filename : draft-wu-alto-json-te-02.txt
Pages : 25
Date : 2013-10-20
Abstract:
Cost metric is a basic concept in Application-Layer Traffic
Optimization (ALTO). It is used in both the Cost Map Service and the
Endpoint Cost Service. However the base protocol defines only a
single cost metric, i.e., the generic "routingcost" metric (Sec. 14.2
of ALTO base specification [ALTO]). In practice, applications may
request network information on other cost (including performance)
metrics.
In this document, we define five new base metrics which are delay,
jitter, pktloss (packet loss), bandwidth and hopcount. These base
metrics are further extended with these nine new metrics linkdelay,
linkjitter, linkloss, maxbw (Maximum Bandwidth), maxreservbw (Maximum
Reserved Bandwdith), unreservbw (Unreserved Bandwidth), residuebw
(Residual Bandwidth), availbw (Available Bandwidth), and utilbw
(Utilized Bandwidth). Also a new parameter anomalousstate is added.
These fourteen cost metrics are derived from OSPF-TE and ISIS-TE and
can be either used as constraint attribute associated with
'routingcost' cost metric attribute or used as returned Cost metrics
in the response, or both and hence provide a relatively comprehensive
set of cost metrics for ALTO.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-wu-alto-json-te
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-wu-alto-json-te-02
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-wu-alto-json-te-02
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
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ftp://ftp.ietf.org/internet-drafts/
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