TR-69 Overview

Ivan OngComcast Technology + Product Development (T+PD)Office of the CTO

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Agenda

• Introduction• Overview of TR-69• TR-69 Architecture

• Differences and advantages of TR-69 technology vs SNMP

• TR-69 Breakdown• TR-69 Screenshots / Use-cases• TR-69 deployments, progress

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Terms

• CPE – Customer Premise Equipment or the device that is being managed. Examples: Wireless Gateway Router, VoIP Digital Adapter, NAS (Networked Attached Storage) Drive, Settop Boxes, etc.

• ACS – Auto Configuration Server, management server for CPE. Part of the Service Provider’s OSS / BSS (Operational or Billing Support Systems)

• XML – Extensible Markup Language. Set of encoding rules that is both human and machine readable.

• SOAP – Simple Object Access Protocol, messaging framework for web services, uses XML as its message format.

• RPC – Remote Procedure Call, built-in procedure that can invoke another process on a remote computer/network.

• Data Model – Set of objects defined for management of a CPE.• SNMP – Simple Network Management Protocol, protocol for managing

devices on IP network.• STUN – Simple Traversal of User Datagram Protocol through Network

Address Translators (NAT)

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What is TR-69?

• Technical Report defined by Broadband Forum• XML SOAP Protocol• Specification to remotely managed end user devices• Enables communication between Customer Premise Equipment (CPE) and

Auto-Configuration Server (ACS)• Base Management Functions:

• Auto-Configuration• Dynamic Service Provisioning• Software/Firmware Image Management• Status and Performance Monitoring• Diagnostics

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TR-69 Architectural Framework

OSS/BSS

Call Center

Policy

Auto-Configuration Server (ACS)

Managed Internet Gateway Device

Managed LAN Device

Managed LAN Device

Managed LAN DeviceScope of CPE WAN Management

Protocol (CWMP):ACS Southbound Interface

ACS Northbound Interface

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TR-69 Remote Management of Home Devices on Private NetworkSTUN Server

ACS

Wireless Home Gateway Router

IPTV STB

VoIP Digital Adapter

• STUN Server enables ACS to send Connection Requests to devices in customers home that reside on a private network

• STUN protocol used to provide public address and port to ACS

STUN Binding Messages

Inform Messages

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TR-69 Extensions

• What can TR-69 be used for?• Manage VoIP Analog Telephone Adapters, [DSL] Modems,

Residential Gateways, IP Settop Boxes• Extensions define data models for different devices:

• TR-98 – gateway devices (DSL modems w/ built in routers)• TR-181 – Device Data Model• TR-104 – VoIP devices• TR-106 – Baseline data model structure• TR-110 – reference model for VoIP configuration• TR-111 – encompasses remote mgmt (now obsolete,

requirements incorporated in TR69 Annex G)

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TR-69 Advantages/Disadvantages

Advantages• Device Configuration, troubleshooting, firmware upgrades, user

management, monitoring.• Enables Service Provider to offer dynamic services from a centrally

managed instance.• Reduces truck rolls/support calls by ability to managed devices with more

granularity, proactive monitoring, and automated processes.

Disadvantages• Must cross several layers of protocols and methods that must

interoperate• Interpretation of the Technical Report by various manufacturers differs,

no standard certification.

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TR-69 vs SNMP

SNMP• SNMP is a simple method to monitor and receive traps for our devices• Uses Community String (SNMPv2) for authentication• Limited to the demarcation device within a subscriber’s home.

TR-69• CPE Wan Management Protocol is designed to provide a high degree

of security and is scalable. • Basic security allows for less robust CPE implementations• Greater security for advanced CPE implementations• Prevents tampering with the management [transactions or] functions

of a CPE and/or ACS• Prevent theft of service

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TR-69 Protocol Stack

CPE/ACS Management Application

RPC Methods

SOAP

HTTP

SSL/TLS

TCP/IP

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TR-69 Call Flow

CPE ACSOpen connection

SSL initiation

HTTP post

HTTP response

Inform request

Inform response

HTTP post

GetParameterValues response

HTTP response

SetParameterValues request

HTTP post

SetParameterValues response

Close connection

HTTP response

HTTP post

HTTP responseGetParameterValues request

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Sample Remote Procedure Calls List

• Inform

• GetParameterAttributes

• SetParameterAttributes

• GetParameterValues

• SetParameterValues

• AddObject

• DeleteObject

• Reboot

• Download

• Upload

• FactoryReset

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ACS ScreenShots

Replacement Gateway receives default gateway’s configuration or last saved configuration

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ACS ScreenShots

Configure NAS device for Web access and connectivity to home devices

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ACS ScreenShots

Online gaming performance degradation. Able to view statistics of packets sent/received, errors.

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ACS ScreenShots

Access WebCam interface for configuration & setup

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ACS ScreenShots

Management Console to define policies

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TR-69 – Actively Used by Other MSO

• Bell Canada• AT&T • Telefonica• China Mobile• Frontier• Telus• CenturyLink• Hughes• Qwest

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TR-69 – Estimated Timelines

Q1 2013

Q3 – Q42012

Q3-Q42011

Cablelabs Wifi Provisioning Framework

Cablelabs members considering TR69 beyond WiFi GW

Cablelabs TR69 test with other vendors for Wifi GW

Q2 – Q3 2012

InterOp with some Gateway Vendors

Q1 2012

Vendors contacted

Approximately 13% of TR-98 supported on Motorola CPE SBG6580

Approximately 8% of TR-181 supported on SMC CPE D3GN4

Data Model still being defined

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References

1. ALU Motive TR-69 Overview

2. Broadband Forum, http://www.broadband-forum.org/technical/trlist.php

3. ClearAccess, Achieveing a Superior Customer Experience.pdf

4. University of New Hampshire Interoperability Lab, http://www.iol.unh.edu/services/testing/dsl/.../TR-069_crash_course.ppsx

5. Wikipedia - http://en.wikipedia.org/wiki/TR-069

Q&A