Chapter 9 Interfaces
ZyWALL ATP Series User’s Guide
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9.3.6 Add/Edit DHCP Extended Options
When you configure an interface as a DHCPv4 server, you can additionally add DHCP extended
options which have the Zyxel Device to add more information in the DHCP packets. The available fields
vary depending on the DHCP option you select in this screen. To open the screen, click Configuration >
Network > Interface > Ethernet > Edit, select DHCP Server in the DHCP Setting section, and then click Add
or Edit in the Extended Options table.
Figure 176 Configuration > Network > Interface > Ethernet > Edit > Add/Edit Extended Options
The following table describes labels that can appear in this screen.
Table 95 Configuration > Network > Interface > Ethernet > Edit > Add/Edit Extended Options
LABEL DESCRIPTION
Option Select which DHCP option that you want to add in the DHCP packets sent through the
interface. See the next table for more information.
Name This field displays the name of the selected DHCP option. If you selected User Defined in the
Option field, enter a descriptive name to identify the DHCP option. You can enter up to 16
characters (“a-z”, “A-Z, “0-9”, “-”, and “_”) with no spaces allowed. The first character must be
alphabetical (a-z, A-Z).
Code This field displays the code number of the selected DHCP option. If you selected User Defined
in the Option field, enter a number for the option. This field is mandatory.
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. 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.
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