Ppp Interfaces - ZyXEL Communications USG40 User Manual

The following table lists the available DHCP extended options (defined in RFCs) on the ZyWALL/
USG. See RFCs for more information.
Table 104 DHCP Extended Options
OPTION NAME
Time Offset
Time Server
NTP Server
TFTP Server Name
Bootfile
SIP Server
VIVC
VIVS
CAPWAP AC
TFTP Server

10.4 PPP Interfaces

Use PPPoE/PPTP/L2TP interfaces to connect to your ISP. This way, you do not have to install or
manage PPPoE/PPTP/L2TP software on each computer in the network.
Figure 222 Example: PPPoE/PPTP/L2TP Interfaces
Chapter 10 Interfaces
CODE DESCRIPTION
2 This option specifies the offset of the client's subnet in seconds from
Coordinated Universal Time (UTC).
4 This option specifies a list of Time servers available to the client.
42 This option specifies a list of the NTP servers available to the client by IP
address.
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.
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.
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.
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.
125 Vendor-Identifying Vendor-Specific option
DHCP clients and servers may use this option to exchange vendor-specific
information.
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.
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.
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