User`s manual

Table Of Contents
SIP User's Manual 7. Using BootP / DHCP
Version 5.0 203 October 2006
7 Using BootP / DHCP
The gateway uses the Bootstrap Protocol (BootP) and the Dynamic Host Configuration
Protocol (DHCP) to obtain its networking parameters and configuration automatically after
it is reset. BootP and DHCP are also used to provide the IP address of a TFTP server on
the network, and files (cmp and ini) to be loaded into memory.
DHCP is a communication protocol that automatically assigns IP addresses from a central
point. BootP is a protocol that enables a device to discover its own IP address. Both
protocols have been extended to enable the configuration of additional parameters specific
to the gateway.
Note: BootP is normally used to initially configure the gateway. Thereafter, BootP
is no longer required as all parameters can be stored in the gateway’s non-
volatile memory and used when BootP is inaccessible. BootP can be used
again to change the IP address of the gateway (for example).
7.1 BootP/DHCP Server Parameters
BootP/DHCP can be used to provision the following parameters (included in the
BootP/DHCP reply). Note that only the IP address and subnet mask are mandatory:
IP address, subnet mask: Mandatory parameters that are sent to the gateway every
time a BootP/DHCP process occurs.
Default gateway IP address: An optional parameter that is sent to the gateway only if
configured in the BootP/DHCP server.
TFTP server IP address: An optional parameter that contains the address of the
TFTP server from which the firmware (cmp) and ini files are loaded.
DNS server IP address (primary and secondary): Optional parameters that contain
the IP addresses of the primary and secondary DNS servers. These parameters are
available only in DHCP and from Boot version 1.92.
Syslog server IP address: An optional parameter that is sent to the gateway only if
configured. This parameter is available only in DHCP.
SIP server IP address: Two optional parameters that are sent to the gateway only if
configured. These parameters are available only in DHCP.
Firmware file name: An optional parameter that contains the name of the firmware
file to be loaded to the gateway via TFTP.
ini file name: An optional parameter that contains the name of the ini file to be loaded
to the gateway via TFTP.