User's Manual

SME VoIP System Guide, Version 1.5
Proprietary and Confidential
Chapter: SME VoIP Administration Interface
48
9.4.3 Boot Server Options
Parameter
Description
Boot Server
DHCP Option
Static:
The base station uses the IP settings configured manually in the boot server
through the Network Menu.
Option 66:
This the option code contained in the client’s initial boot file. The network device
searches for option 66 (string type) from the response received from the DHCP
server.
Custom:
The network device searches for the option number specified by the Boot Server
Option parameter, and the type specified by the Boot Server Option Type
parameter (below) in the response received from the DHCP server.
Custom+Option 66:
The 1
st
choice option for network device will be to use the custom option if
present and the 2
nd
choice is Option 66 if the custom option is not present.
If the DHCP server sends nothing, the following scenarios are possible:
• If a boot server value is stored in flash memory and the value is not “0.0.0.0”,
then the value stored in flash is used.
• Otherwise the network device sends out a DHCP INFORM query.
- If a single alternate DHCP server responds, this is functionally equivalent to the
scenario where the primary DHCP server responds with a valid boot server value.
The network device prefers the custom option value over the Option 66 value,
but if no custom option is given, the device will use the Option 66 value.
- If no alternate DHCP server responds, the INFORM query process will retry and
eventually time out.
Permitted value(s): Static, Option 66, Custom, Custom+Option 66
Customer DHCP
Option
This is a value (a positive integer) used to explain a DHCP action.
When this parameter is set to Custom, this parameter specifies the DHCP option
number in which the network device will look for its boot server.
Permitted value(s): 128 through 254 (Cannot be the same as VLAN ID Option)
This parameter should not matter when the Boot server DHCP option is
set/enabled.
Content Option
Type
This makes it possible for a user to choose some customized Boot Server Option
types. These options are customized by the user itself in the configuration file.
When this parameter is set to Custom, this parameter specifies the content type
of the DHCP option in which a device should retrieve from its boot server.
Permitted value(s): IP address, String
The IP Address, must specify the boot server. The String can be URL, FTP, TFTP,
HTTPS, etc. The address can be followed by optional directory.
Screenshot