CHAPTER16 Services
Mediant 800 Gateway & E-SBC | User's Manual
Table 16-4: DHCP Option Table Parameter Descriptions
Parameter Description
'Index'
dhcp option
[DhcpOption_Index]
Defines an index number for the new table row.
Note: Each row must be configured with a unique
index.
'DHCP Server Index'
dhcp-server-number
[DhcpOption_DhcpServerIndex]
Associates the DHCP Option table entry with a
DHCP server that you configured in Configuring the
DHCP Server.
Note: Currently, only one DHCP server (Index 0) can
be configured and therefore, the parameter is always
set at 0.
'Option'
option
[DhcpOption_Option]
Defines the code of the DHCP Option.
The valid value is 1 to 254. The default is 159.
For example, for DHCP Option 150 (Cisco proprietary
for defining multiple TFTP server IP addresses), enter
the value 150.
'Type'
type
[DhcpOption_Type]
Defines the format (type) of the DHCP Option value
that is configured in the 'Value' parameter (see below).
■ [0] ASCII = (Default) Plain-text string (e.g., when
the value is a domain name).
■ [1] IP address = IPv4 address.
■ [2] Hexadecimal = Hexadecimal-encoded string.
For example, if you set the 'Value' parameter to
"company.com", you need to set the 'Type' parameter
to ASCII.
'Value'
value
[DhcpOption_Value]
Defines the value of the DHCP Option. For example, if
you are using Option 66, the parameter is used for
specifying the TFTP provisioning server (e.g.,
http://192.168.3.155:5000/provisioning/).
The valid value is a string of up to 256 characters. By
default, no value is defined. For IP addresses, the
value can be one or more IPv4 addresses, each
separated by a comma (e.g.,
192.168.10.5,192.168.10.20). For hexadecimal
values, the value is a hexadecimal string (e.g.,
c0a80a05).
You can also configure the parameter with case-
sensitive placeholder strings that are replaced with
actual values if the 'Expand Value' parameter (see
below) is set to Yes:
■ <MAC>: Replaced by the MAC address of the
client. The MAC address is obtained from the
client's DHCP request. For example, the
parameter can be set to:
http://192.168.3.155:5000/provisioning/cfg_
<MAC>.txt
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