Chapter 10 Interfaces
UAG4100 User’s Guide
125
The following table lists the available DHCP extended options (defined in RFCs) on the UAG. See
RFCs for more information.
Type
This is the type of the selected DHCP option. If you selected
User Defined
in the
Option
field, select an appropriate type for the value that you will enter in the next field. Only
advanced users should configure
User Defined
. Misconfiguration could result in interface
lockout.
Value
Enter the value for the selected DHCP option. For example, if you selected
TFTP Server
Name (66)
and the type is
TEXT
, enter the DNS domain name of a TFTP server here. If
you selected the
Time Offset (2)
option, the type is
Boolean
and you have to enter a
Boolean value which should be either 0 or 1, where 1 interpreted as true and 0 is
interpreted as false.
This field is mandatory.
First IP Address,
Second IP
Address, Third IP
Address
If you selected
Time Server (4)
,
NTP Server (41)
,
SIP Server (120)
,
CAPWAP AC
(138)
, or
TFTP Server (150)
, you have to enter at least one IP address of the
corresponding servers in these fields. The servers should be listed in order of your
preference.
First Enterprise
ID, Second
Enterprise ID
If you selected
VIVC (124)
or
VIVS (125)
, you have to enter at least one vendor’s 32-bit
enterprise number in these fields. An enterprise number is a unique number that identifies
a company.
First Class,
Second Class
If you selected
VIVC (124)
, enter the details of the hardware configuration of the host on
which the client is running, or of industry consortium compliance.
First
Information,
Second
Information
If you selected
VIVS (125)
, enter additional information for the corresponding enterprise
number in these fields.
First FQDN,
Second FQDN,
Third FQDN
If the
Type
is
FQDN
, you have to enter at least one domain name of the corresponding
servers in these fields. The servers should be listed in order of your preference.
OK
Click this to close this screen and update the settings to the previous Edit screen.
Cancel
Click
Cancel
to close the screen.
Table 54
DHCP Extended Options
OPTION NAME
CODE
DESCRIPTION
Time Offset
2
This option specifies the offset of the client's subnet in seconds from
Coordinated Universal Time (UTC).
Time Server
4
This option specifies a list of Time servers available to the client.
NTP Server
42
This option specifies a list of the NTP servers available to the client by IP
address.
TFTP Server Name
66
This option is used to identify a TFTP server when the “sname” field in the
DHCP header has been used for DHCP options. The minimum length of the
value is 1.
Bootfile
67
This option is used to identify a bootfile when the “file” field in the DHCP
header has been used for DHCP options. The minimum length of the value is
1.
SIP Server
120
This option carries either an IPv4 address or a DNS domain name to be used
by the SIP client to locate a SIP server.
VIVC
124
Vendor-Identifying Vendor Class option
A DHCP client may use this option to unambiguously identify the vendor that
manufactured the hardware on which the client is running, the software in
use, or an industry consortium to which the vendor belongs.
Table 53
Configuration > Network > Interface > Ethernet > Edit > Add/Edit Extended Options
LABEL
DESCRIPTION