ManagmentProtocolTR-069

8/11/2019 ManagmentProtocolTR-069

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Management Protocol

TR 069

CPE - WAN

ClarissaPinto Bastos

Heru Pranoto

02/05/2011


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What is TR-069?

A protocol for communication between CustomerPremise Equipment (CPE) and Auto-Configuration Server

(ACS) that encompasses secure auto-configuration as well as

other CPE management functions within a common

framework.


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Why TR-069?

Service Providers can, through TR-069, use one

common platform to manage, through the Internet, all of theirCustomer Premise Devices, no matter the device nor the

manufacturer.

This common application has never been achieved

before due to CPE vendors creating proprietary mechanisms formanagement, and not wanting to expose those mechanisms to

their competitors.


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CPE ACS

Open 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 response

GetParameterValues request

TR-069 CPE/ACS Interaction Model:


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Advantages of TR-069:

CWMP device configuration, troubleshooting, firmware upgrades,

user management, and reporting for TR-069 enabled devices to

reduce truck rolls

Enables service providers to offer dynamic services such as home

networking, security, Voice over IP, centrally managed by a TR-069

ACS

Reduces support calls by automated/proactive monitoringand

managing of TR-069 CWMP devices


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Disadvantages TR-069 cont.)

Has to cross several layers of protocols and methods that must interoperate:

Layer Description

CPE/ACS Application The application uses the CPE WAN Management Protocol on the CPE and ACS,

respectively. The application is locally defined and not specified as part of the CPE WAN

Management Protocol.

RPC Methods The specific RPC methods that are defined by the CPE WAN Management Protocol.

SOAP A standard XML-based syntax used here to encode remote procedure calls. Specifically

SOAP 1.1

HTTP HTTP 1.1

SSL/TLS The standard Internet transport layer security protocols. Specifically, either SSL 3.0

(Secure Socket Layer), or TLS 1.0 (Transport Layer Security)

TCP/IP Standard TCP/IP.

Table 1 of TR-069 Amendment 1


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TR-069 vs. SNMP

SNMP is a technology that is tried and true, but each company has it's

own MIB (management information base), and SNMP has been known to have

security flaws. TR-069 was created to be device agnostic, meaning that all CPE

devices can be managed by one TR-069 Auto Configuration Server (ACS) no

matter the manufacturer etc.

SNMP (Simple Network Management Protocol) is used by networkmanagement systems to monitor network-attached devices for conditions

that warrant administrative attention. It consists of a set of standards for

network management, including an application layer protocol, a database

schema, and a set of data objects.


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Privacy Concerns:

Although it may seem invasive and insecure to have devices able to

be accessed without active consent, there are many security protocols included

in the TR-069 documents.

Security Goals:

The CPE WAN Management Protocol is designed to provide a high degree of

security. The security model is also designed to be scalable. It is intended to allow basic

security to accommodate less robust CPE implementations, while allowing greatersecurity for those that can support more advanced security mechanisms. In general terms,

the security goals of the CPE WAN Management Protocol are as follows:

Prevent tampering with the management functions of a CPE or ACS, or the

transactions that take place between the CPE and ACS.

Provide confidentiality for the transactions that take place between a CPE andACS.

Allow appropriate authentication for each type of transaction.

Prevent theft of service.

From the TR-069 Amendment 1 document:


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What can TR-069 be used for so far?

Any and all CPE, such as VoIP Analog Telephone Adapters, DSL Modems, and

Residential Gateways.

These capabilities are provisioned by TR-069 and its extensions (TR-098, TR-104, TR-106, TR-110, TR-111)

TR-069 Extensions:

TR-098 - data model for internet gateway devices (DSL modems with built in routers)

TR-104 - data model and any specific items for VoIP devices

TR-106 - a base object structure for TR-069 enabled devices

TR-110 - a reference model for VoIP configurations

TR-111 - covers applying TR-069 to remote management of home networking devices


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Conclusion

Since TR-069

s ratification, changing market dynamics continue to

impact the way service providers conduct business. A single high-speed

data service is no longer a viable, long-term path to retain market share

or grow revenue. Prices of core data servicesand the associated

marginsare declining steeply, and market saturation of basic

broadband is on the horizon. To remain competitive, carriers are

expanding into new video and content services, going after video

franchises, bundling entertainment packages, and competing head-to-

head with traditional cable operators to attract and retain new

customers.

TR-069 has to keep expanding to incorporate the many newtechnologies being developed for in-home use


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References:

Technical Report DSL Forum TR-069 CPE WAN Management

Protocol, 2004

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

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