Dhcp - ZyXEL Communications VANTAGE CNM - V3.1 User Manual

Chapter 7 Device Advanced Settings
Table 92 Device Operation > Device Configuration > Advanced > DNS > DDNS (continued)
LABEL
Wildcard
WAN Interface
IP Address Update
Policy
HA
Apply
Reset

7.12 DHCP

Use this screen to configure the DNS server information that the device sends to DHCP clients
on the LAN, DMZ or WLAN. To open this screen, click a device, click Device Operation in
the menu bar and then click Device Configuration > Advanced > DNS > DHCP in the
navigation panel.
210
DESCRIPTION
Select the check box to enable DYNDNS Wildcard.
Select the WAN port to use for updating the IP address of the domain name.
Select Use WAN IP Address to have the device update the domain name with
the WAN port's IP address.
Select Use User-Defined and enter the IP address if you have a static IP
address.
Select Let DDNS Server Auto Detect only when there are one or more NAT
routers between the device and the DDNS server. This feature has the DDNS
server automatically detect and use the IP address of the NAT router that has a
public IP address.
Note: The DDNS server may not be able to detect the proper IP
address if there is an HTTP proxy server between the
device and the DDNS server.
Select this check box to enable the high availability (HA) feature. High
availability has the device update a domain name with another port's IP address
when the normal WAN port does not have a connection.
If the WAN port specified in the WAN Interface field does not have a
connection, the device will attempt to use the IP address of another WAN port
to update the domain name.
When the WAN ports are in the active/passive operating mode, the device will
update the domain name with the IP address of whichever WAN port has a
connection, regardless of the setting in the WAN Interface field.
Disable this feature and the device will only update the domain name with an IP
address of the WAN port specified in the WAN Interface field. If that WAN port
does not have a connection, the device will not update the domain name with
another port's IP address.
Note: If you enable high availability, DDNS can also function
when the device uses the dial backup port. DDNS does not
function when the device uses traffic redirect.
Click this to save your changes back to the device.
Click this to begin configuring this screen afresh.
Vantage CNM User's Guide