ALTO Extension: Endpoint Cost Service for Flows

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Last updated 2016-10-22 (latest revision 2016-04-20)
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The Endpoint Cost Service (ECS) has limitations to illustrate the network condition and to work with the OpenFlow protocol. This document extends ECS to improve the Application-Layer Traffic Optimization (ALTO) protocol by (1) defining more types of endpoint address such as port number, protocol type, domain and etc; (2) adding flow constraints.


Xvdong Shen (
J. Zhang (
Junzhuo Wang (
Qiao Xiang (

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