TECHNICAL REPORT TR-124 Functional Requirements for Broadband Residential Gateway Devices Issue: 6 Issue Date: December 2020 © The Broadband Forum. All rights reserved. Functional Requirements for Broadband Residential Gateway Devices TR-124 Issue 6 Notice The Broadband Forum is a non-profit corporation organized to create guidelines for broadband network system development and deployment. This Technical Report has been approved by members of the Forum. This Technical Report is subject to change. This Technical Report is owned and copyrighted by the Broadband Forum, and all rights are reserved. Portions of this Technical Report may be owned and/or copyrighted by Broadband Forum members. 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IF ANY SUCH RIGHTS ARE DESCRIBED ON THE TECHNICAL REPORT, BROADBAND FORUM TAKES NO POSITION AS TO THE VALIDITY OR INVALIDITY OF SUCH ASSERTIONS, OR THAT ALL SUCH ASSERTIONS THAT HAVE OR MAY BE MADE ARE SO LISTED. All copies of this Technical Report (or any portion hereof) must include the notices, legends, and other provisions set forth on this page. December 2020 © The Broadband Forum. All rights reserved 3 of 175 Functional Requirements for Broadband Residential Gateway Devices TR-124 Issue 6 Issue History Issue Approval Date Publication Issue Editor Changes Number Date 1 December 2006 Jaime Fink, 2Wire Original Jack Manbeck, Texas Instruments 2 May 2012 Barbara Stark, AT&T Added IPv6 functionality. Ole Trøan, Cisco 3 21 August 2012 22 August 2012 Dave Hood, Ericsson Continued evolution. Changes described in Executive Summary 4 8 Sept 2014 27 Oct 2014 Jean-Didier Ott, Orange Continued evolution. Yilan Ding, Changes described in Huawei Technologies Executive Summary 5 18 July 2016 5 August 2016 Jean-Didier Ott, Orange Continued evolution. Changes described in Executive Summary 6 17 December 17 December Jason Walls, QA Cafe Adds security requirements 2020 2020 for RGs Adds requirements for G.fast enabled RGs Adds requirements for TWAMP performance measurement Adds requirements for 5G- RG in Wireless-Wireline Convergence (WWC) architecture Comments or questions about this Broadband Forum Technical Report should be directed to [email protected]. Editor(s) Jason Walls QACafe Broadband User John Blackford CommScope Services Work Area Jason Walls QACafe Directors December 2020 © The Broadband Forum. All rights reserved 4 of 175 Functional Requirements for Broadband Residential Gateway Devices TR-124 Issue 6 Table of Contents: 1 PURPOSE AND SCOPE ............................................................................................................... 11 1.1 PURPOSE ........................................................................................................................................11 1.2 SCOPE ............................................................................................................................................11 2 REFERENCES AND TERMINOLOGY ...................................................................................... 12 2.1 CONVENTIONS ...............................................................................................................................12 2.2 REFERENCES .................................................................................................................................13 2.3 DEFINITIONS..................................................................................................................................26 2.4 ABBREVIATIONS ............................................................................................................................29 3 TECHNICAL REPORT IMPACT ................................................................................................ 33 3.1 ENERGY EFFICIENCY ....................................................................................................................33 3.2 IPV6 ...............................................................................................................................................33 3.3 SECURITY ......................................................................................................................................33 3.4 PRIVACY ........................................................................................................................................33 4 RESIDENTIAL GATEWAY REQUIREMENTS ........................................................................ 34 4.1 GEN - GENERAL DEVICE REQUIREMENTS ...................................................................................34 4.1.1 GEN.Design - Design ................................................................................................................................... 34 4.1.2 GEN.OPS - Device Operation ....................................................................................................................... 35 4.1.3 GEN.NET - Networking Protocols ................................................................................................................ 36 4.1.4 GEN.NETv6 - IPv6 Networking Protocols .................................................................................................... 37 4.2 WAN - WIDE AREA NETWORKING ...............................................................................................38 4.2.1 WAN.ATM .................................................................................................................................................. 38 4.2.1.1 WAN. ATM.MULTI - ATM Multi-PVC.........................................................................................................................39 4.2.2 WAN.CONNECT - Connection Establishment .............................................................................................. 40 4.2.2.1 WAN.CONNECT.OnDemand - On-Demand Connection Establishment ..........................................................................40 4.2.3 WAN.ETHOAM - Ethernet OAM................................................................................................................. 41 4.2.4 WAN.BRIDGE - Bridging ............................................................................................................................ 42 4.2.5 WAN.DHCPC - DHCP Client (DHCPv4) ..................................................................................................... 43 4.2.5.1 WAN.DHCPC.Force - Force renew ................................................................................................................................44 4.2.5.2 WAN.DHCPC.BFDecho - BFD echo ..............................................................................................................................45 4.2.5.3 WAN.DHCPC.BFDKA - BFD Keep-alive ......................................................................................................................45 4.2.6 WAN.DHCPv4- DHCP Client (DHCPv4) ....................................................................................................