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Configuring CWMP
Overview
CPE WAN Management Protocol (CWMP), also called "TR-069," is a DSL Forum technical
specification for remote management of home network devices.
The protocol was initially designed to provide remote autoconfiguration through a server for large
numbers of dispersed end-user devices in DSL networks. However, it has been increasingly used on
other types of networks, including Ethernet, for remote autoconfiguration.
CWMP network framework
Figure 1 shows a basic CWMP network framework.
Figure 1 CWMP network framework
A basic CWMP network includes the following network elements:
• ACS—Autoconfiguration server, the management device in the network.
• CPE—Customer premises equipment, the managed device in the network.
• DNS server—Domain name system server. CWMP defines that the ACS and the CPE use
URLs to identify and access each other. DNS is used to resolve the URLs.
• DHCP server—Assigns ACS attributes along with IP addresses to CPEs when the CPEs are
powered on. DHCP server is optional in CWMP. With a DHCP server, you do not need to
configure ACS attributes manually on each CPE. The CPEs contact the ACS automatically
when they are powered on for the first time.
The device is operating as a CPE in the CWMP framework.
Basic CWMP functions
The ACS identifies different categories of CPEs by provision code. You can use the ACS to
autoconfigure and upgrade each category of CPEs in bulk.
Autoconfiguration
You can create configuration files for different categories of CPEs on the ACS. The ACS identifies
the configuration file for a CPE by its provision code.
DNS server
CPE
ACS
DHCP server
CPE
CPE
IP network
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