[alto] I-D Action: draft-ietf-alto-path-vector-04.txt

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Subject: [alto] I-D Action: draft-ietf-alto-path-vector-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Application-Layer Traffic Optimization WG of the IETF.

        Title           : ALTO Extension: Path Vector Cost Type
        Authors         : Greg Bernstein
                          Shiwei Dawn Chen
                          Kai Gao
                          Young Lee
                          Wendy Roome
                          Michael Scharf
                          Y. Richard Yang
                          Jingxuan Jensen Zhang
	Filename        : draft-ietf-alto-path-vector-04.txt
	Pages           : 29
	Date            : 2018-07-02

   The Application-Layer Traffic Optimization (ALTO) protocol [RFC7285]
   has defined cost maps and endpoint cost maps to provide basic network
   information.  However, they provide only scalar (numerical or
   ordinal) cost mode values, which are insufficient to satisfy the
   demands of solving more complex network optimization problems.  This
   document introduces an extension to the base ALTO protocol, namely
   the path-vector extension, which allows ALTO clients to query
   information such as capacity regions for a given set of flows.  A
   non-normative example called multi-flow scheduling is presented to
   illustrate the limitations of existing ALTO endpoint cost maps.
   After that, details of the extension are defined.

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