ELTEX TAU-8.IP - 6 Autoprovisioning Procedure Operation Algorithm Via Dhcp

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96 VoIP subscriber gateways
6 AUTOPROVISIONING PROCEDURE OPERATION ALGORITHM VIA DHCP
If the packet exchange is performed trough DHCP the device checks DHCP reply messages for existence of
Option 43 (Vendor-Specific Info). If 'DHCP options' value is detected; server URL, firmware file names and
configurations will be extracted from DHCP Option 43. After that, the reboot process will be start by using the
received information. If DHCP option is not detected the device searching Option 66 (TFTP server) and 67 (Boot
file name). If the searching is successful, firmware and configuration files will be loaded from specified server.
Format of option 43 (Vendor-Specific Info):
1|<acs_url>|2|<pcode>|3|<username>|4|<password>|5|<server_url>|6|<config.file>|7|<firmware.file>|8|<vlan_tag>
1 – TR-069 autoconfiguration server address code;
2 – ‘Provisioning code’ parameter specification code;
3 – code of the username for TR-069 server authorization;
4 – code of the password for TR-069 server authorization;
5 – server address code; server address URL should be specified in the following format: tftp://address
or http://address. The first version represents TFTP server address, the second version—HTTP server
address;
6 – configuration file name code;
7 – firmware file name code;
8 – VLAN tag code for management.
"|" – mandatory separator used between codes and suboption values.
Autoconfiguration procedure algorithm:
1. DHCP exchange initialization
Device initializes DHCP exchange after the startup.
2. Option 43 analysis
When Option 43 is received, Suboption 8 is analyzed (vlan tag);
– Suboption exists and differs from current VLAN tag (DHCP exchange is initiated in new VLAN);
– Suboption is absent or present and does not differ from the current VLAN tag: first of all, option is
checked for presence of suboptions with 1, 2, 3 and 4 codes. If these suboptions are present, the device stops
the analysis of the other options and establishes connection to ACS server to apply autoconfiguration via TR-069
protocol. If these options are absent, suboptions with 5, 6 and 7 codes will be analyzed to determine URL of
server, configuration file names and firmware. If suboption 6 and 7 are absent, the configuration update
procedure and software are not performed.
3. Analysis of 66 and 67 options
If 43 Option from DHCP server is not received, client searches for Option 66 and extracts TFTP server
address. If Option 66 was received with Option 67, the firmware name will be extracted from Option 67. If 67
Option is not received, both the firmware file name and configuration file will be extracted from configuration
(these parameters are displayed on the WEB-interface’s page in the ‘Firmware file name’’ fields (for Option 66
analysis) of the ‘System/Autoconfiguration and Configuration file name’ menu). If these fields are empty, the
attempt to load the files will be performed:
MAC_ADDRESS.cfg
MAC_ADDRESS.fw
Where MAC_ADDRESS is MAC address of the device WAN interface written by uppercase letters after dot
‘.’ (for example, A8.F9.4B.02.20.9A.cfg and A8.F9.4B.02.20.9A.fw).