H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 53)

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Basic CWMP functions
Autoconnection between ACS and CPE
A CPE can connect to an ACS automatically by sending an Inform message. The following conditions
may trigger an autoconnection establishment:
• A CPE is started up. A CPE can find the corresponding ACS according to the acquired URL, and
automatically initiates a connection to the ACS.
• A CPE is configured to send Inform messages periodically. The CPE automatically sends an Inform
message at the configured interval to establish connections.
• A CPE is configured to send an Inform message at a specific time. The CPE automatically sends an
Inform message at the configured time to establish a connection.
• The current session is not finished but interrupted abnormally. In this case, if the number of CPE
autoconnection retries does not reach the limit, the CPE automatically establishes a connection.
An ACS can initiate a Connect Request to a CPE at any time, and can establish a connection with the
CPE after passing CPE authentication.
Autoconfiguration
When a CPE logs in to an ACS, the ACS automatically applies some configurations to the CPE for it to
perform autoconfiguration. Autoconfiguration parameters supported by the device include (but are not
limited to) the following:
• Configuration file (ConfigFile)
• ACS address (URL)
• ACS username (Username)
• ACS password (Password)
• PeriodicInformEnable
• PeriodicInformInterval
• PeriodicInformTime
• CPE username (ConnectionRequestUsername)
• CPE password (ConnectionRequestPassword)
CPE system software image file and configuration file management
The network administrator can save CPE system software image files and configuration files on the ACS
and configure the ACS to automatically ask the CPE to download any update made to these files. After
the CPE receives an update request, it automatically downloads the updated file from the file server
according to the filename and server address in the ACS request. After the CPE downloads the file, it
checks the file validity and reports the download result (success or failure) to the ACS.
The device can download only system software images and configuration files from the ACS, and does
not support digital signatures.
To backup important data, a CPE can upload the current configuration file to the specified server
according to the requirement of an ACS. Currently, the device only supports uploading the vendor
configuration file or log file.
CPE status and performance monitoring
An ACS can monitor the parameters of a CPE connected to it. Different CPEs have different performances
and functionalities. Therefore the ACS must be able to identify each type of CPE and monitor the current