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Comcast's Protocol-Agnostic Congestion Management System (RFC6057) Disclosure Number: IPCOM000202188D
Original Publication Date: 2010-Dec-01
Included in the Prior Art Database: 2010-Dec-08
Document File: 58 page(s) / 75K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Bastian: AUTHOR [+4]


Comcast Cable is a large broadband Internet Service Provider (ISP), based in the U.S., serving the majority of its customers via cable modem technology. During the late part of 2008, and completing on December 31, 2008, Comcast deployed a new congestion management system across its entire network. This new system was developed in response to dissatisfaction in the Internet community as well as complaints to the U.S. Federal Communications Commission (FCC) regarding Comcast's old system, which targeted specific peer-to-peer (P2P) applications. This new congestion management system is protocol-agnostic, meaning that it does not examine or impact specific user applications or network protocols, which is perceived as a more fair system for managing network resources at limited times when congestion may occur.

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Internet Engineering Task Force (IETF)                        C. Bastian Request for Comments: 6057                                    T. Klieber Category: Informational                                     J. Livingood ISSN: 2070-1721                                                 J. Mills                                                                R. Woundy                                                                  Comcast                                                            December 2010

         Comcast's Protocol-Agnostic Congestion Management System


   This document describes the congestion management system of Comcast    Cable, a large cable broadband Internet Service Provider (ISP) in the    U.S.  Comcast completed deployment of this congestion management    system on December 31, 2008.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Bastian, et al.               Informational                     [Page 1]
 RFC 6057           An ISP Congestion Management System     December 2010

 Table of Contents

   1. Introduction ....................................................2

   2. Applicability to Other Types of Networks ........................3