Chapter 7: Using Bootp / Dhcp; Bootp/Dhcp Server Parameters - 3Com VCX v7111 User Manual

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The V7111 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 V7111 gateway.
BootP is normally used to initially configure the V7111 gateway. Thereafter, BootP is
no longer required as all parameters can be stored in the gateways non-volatile
memory and used when BootP is inaccessible. BootP can be used again to change
the IP address of the V7111 gateway (for example).

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, subnet mask
a BootP/DHCP process occurs.
Default gateway IP address
only if configured in the BootP/DHCP server.
TFTP server IP address
server from which the firmware (cmp) and ini files are loaded.
DNS server IP address (primary and secondary)
addresses of the
primary and secondary
only in DHCP and from Boot version 1.92.
Syslog server IP address -
configured. This parameter is available only in DHCP.
SIP server IP address – Two
if configured. These parameters are available only in DHCP.
Firmware file name
be loaded to the gateway using TFTP.
ini file name - An optional parameter that contains the name of the ini file to be loaded to
the gateway using TFTP.
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3Com VCX V7111 VoIP Gateway User Guide
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IP address and subnet mask
- These mandatory parameters are sent to the V7111 every time
- An optional parameter that is sent to the V7111 gateway
- An optional parameter that contains the address of the TFTP
DNS servers. These parameters are available
An optional parameter that is sent to the V7111 gateway only if
optional parameters that are sent to the V7111 gateway only
– An optional parameter that contains the name of the firmware file to
P / DHCP
OOT
are mandatory:
- Optional parameters that contain the IP
.
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