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Chapter 7 Interfaces

ZyWALL 110/310/1100 Series User’s Guide

125

The following table lists the available DHCP extended options (defined in RFCs) on the ZyWALL. See
RFCs for more information.

7.4 PPP Interfaces

Use PPPoE/PPTP interfaces to connect to your ISP. This way, you do not have to install or manage
PPPoE/PPTP software on each computer in the network.

First
Information,
Second
Information

If you selected VIVS (125), enter additional information for the corresponding enterprise
number in these fields.

Click this to close this screen and update the settings to the previous Edit screen.

Cancel

Click Cancel to close the screen.

Table 44

DHCP Extended Options

OPTION NAME

CODE

DESCRIPTION

Time Offset

This option specifies the offset of the client's subnet in seconds from
Coordinated Universal Time (UTC).

Time Server

This option specifies a list of Time servers available to the client.

NTP Server

This option specifies a list of the NTP servers available to the client by IP
address.

TFTP Server Name

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

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.

VIVS

125

Vendor-Identifying Vendor-Specific option

DHCP clients and servers may use this option to exchange vendor-specific
information.

CAPWAP AC

138

CAPWAP Access Controller addresses option

The Control And Provisioning of Wireless Access Points Protocol allows a
Wireless Termination Point (WTP) to use DHCP to discover the Access
Controllers to which it is to connect. This option carries a list of IPv4
addresses indicating one or more CAPWAP ACs available to the WTP.

TFTP Server

150

The option contains one or more IPv4 addresses that the client may use. The
current use of this option is for downloading configuration from a VoIP server
via TFTP; however, the option may be used for purposes other than
contacting a VoIP configuration server.

Table 43

Configuration > Network > Interface > Ethernet > Edit > Add/Edit Extended Options

LABEL

DESCRIPTION