H3C Technologies H3C MSR 50 - Manual (Page 89)

Configuring CWMP (TR-069)
Overview
CPE WAN Management Protocol (CWMP), also called "TR-069," is a DSL Forum technical specification
for remote management of home network devices. It defines the general framework, message format,
management method, and data model for managing and configuring home network devices.
CWMP applies mainly to DSL access networks, which are hard to manage because end-user devices are
dispersed and large in number. CWMP makes the management easier by using an autoconfiguration
server to perform remote centralized management of customer premises equipment.
CWMP network framework
Figure 28 shows a basic CWMP network framework.
Figure 28 CWMP network framework
The basic CWMP network elements include:
• 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 an ACS and a CPE use URLs to
identify and access each other. DNS is used to resolve the URLs.
• DHCP server—Assigns IP addresses to CPEs, and uses the options field in the DHCP packet to issue
configuration parameters to the CPE.
Your device can work as the CPE but not the ACS.
Basic CWMP functions
Autoconnection between ACS and CPE
A CPE can connect to an ACS automatically by sending an Inform message. The following conditions
might trigger an autoconnection establishment:
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