AudioCodes Mediant 800B - Page 234

User's Manual 234 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Table 15-4: 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' on page 227.
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
 <IP>: Replaced by the IP address assigned by the DHCP server
to the client. For example, the parameter can be set to:
http://192.168.3.155:5000/provisioning/cfg_<IP>.txt
Expand Value
expand-value
[DhcpOption_ExpandValue]
Enables the use of the special placeholder strings, "<MAC>" and
"<IP>" for configuring the 'Value' parameter (see above).
 [0] No
 [1] Yes (default)
Note:
The parameter is applicable only to values of type ASCII (see
the 'Type' parameter above.