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e Series ADSL Brid
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9-
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DHCP Client Configuration
two-digit hexadecimal numbers separated by colons. For example:
option option-133 "my-option-133-text";
option option-129 1:54:c9:2b:47;
Because DHCP does not know the format of these undefined option codes,
no checking is done to ensure the correctness of the entered data.
9.4.2 Supported DHCP client options
The following section shows configuration options which the DHCP client
can use to
configure the IP stack.
option subnet-mask
ip-addres
s;
The
subnet-mask
option specifies, or requests the server to supply,
the client’s subnet mask.
option dhcp-lease-time
in
t;
This option can be used to request a specific lease duration by the
client. The analogous option on the server is
“max-lease-tim
e”. For
example,
“send dhcp-lease-time 20
0” would set a client to request a
lease time of 200 seconds.
option dhcp-client-identifier
data-strin
g;
This option should be used to specify a client identifier in a host
declaration, so that a DHCP server can find the host record by matching
against the client identifier. This option is required when attempting to
operate the DHCP client with a Microsoft DHCP server. In this case, the
hardware address of the card upon which DHCP is running must be sent to
the server as the client-identifier. Otherwise, it is recommended that every
DHCP client has at least a unique identifier (this can be a MAC address, or
a text string such as a hostname)- otherwise the DHCP server may not
function optimally.