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An Aggregate Network and Cost Map (CPID) Extension for the ALTO Protocol

Document Type Expired Internet-Draft (individual)
Authors Song Haibin , Mach Chen , David A. Bryan
Last updated 2010-07-12
Stream (None)
Intended RFC status (None)
Expired & archived
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The goal of the Application-Layer Traffic Optimization (ALTO) protocol is to provide guidance to applications which have to select one or several hosts from a set of candidates, all of which are able to provide the desired resource. The goal of the mechanisms specified in this document is to extend the existing solution, and provide basic attributes to each end terminal to make it network- aware. These mechanisms introduce a way to directly transfer the guidance or costs using Network Location identifiers/PIDs, called CPIDs. And the exisiting The proposed solution inherits the existing solution's architecture, messages, and other mechanisms. It can be used as an independent solution or function together with other functions in the existing solution to provide guidance for different client and balance the workload on the server. Additional details for the process will be provided in the next version of the draft.


Song Haibin
Mach Chen
David A. Bryan

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)