Improving ICE Interface Selection Using Port Control Protocol (PCP) Flow Extension

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Last updated 2014-04-12 (latest revision 2013-10-09)
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A host with multiple interfaces needs to choose the best interface for communication. Oftentimes, this decision is based on a static configuration and does not consider the link characteristics of that interface, which may affect the user experience. This document describes a mechanism for an endpoint to query the link characteristics from the access router (the router at the other end of the endpoint's access link) using a Port Control Protocol (PCP) Flow Extension. This information influences endpoint's Interactive Connectivity Establishment (ICE) candidate selection algorithm.


Tirumaleswar Reddy.K (
Dan Wing (
Bill Steeg (
Reinaldo Penno (
Varun Singh (

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