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V7122 Gateway User Guide
299
If there is no reply from a BootP server and if DHCP is enabled (DHCPEnable = 1), the
gateway initiates a standard DHCP procedure to configure its network parameters.
After changing the network parameters, the gateway attempts to load the
cmp
and various
configuration files from the TFTP server’s IP address, received from the BootP/DHCP
servers. If a TFTP server’s IP address isn’t received, the gateway attempts to load the
software (
cmp
) file and / or configuration files from a preconfigured TFTP server (see
Automatic Update Mechanism
). Thus, the gateway can obtain its network parameters from
BootP or DHCP servers and its software and configuration files from a different TFTP server
(preconfigured in i
ni
file).
If BootP/DHCP servers are not found or when the gateway is reset from the Web / SNMP, it
retains its network parameters and attempts to load the software (
cmp
) file and / or
configuration files from a preconfigured TFTP server.
If a preconfigured TFTP server doesn’t exist, the gateway operates using the existing
software and configuration files loaded on its non-volatile memory.
•
After the operational software runs, if DHCP is configured, the gateway
attempts to renew its lease with the DHCP server.
•
Though DHCP and BootP servers are very similar in operation, the DHCP
server includes some differences that could prevent its operation with BootP
clients. However, many DHCP servers, such as Windows
™
NT DHCP server,
are backward-compatible with BootP protocol and can be used for gateway
configuration.
•
The time duration between BootP/DHCP requests is set to 1 second by
default. This can be changed by the BootPDelay ini file parameter. Also, the
number of requests is 3 by default and can be changed by BootPRetries ini
file parameter. (Both parameters can also be set using the BootP command
line switches).
Summary of Contents for VCX V7122
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