ZyXEL Communications vantage cnm ユーザーズマニュアル

 Chapter 7 Device Advanced Settings

Vantage CNM User’s Guide

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.

Offline

This option is available when Custom is selected in the DDNS Type field. 
Check with your Dynamic DNS service provider to have traffic redirected to a 
URL (that you can specify) while you are off line.

Wildcard

Select the check box to enable DYNDNS Wildcard.

WAN Interface

Select the WAN port to use for updating the IP address of the domain name.

IP Address Update 
Policy

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.

HA

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.

Apply

Click Apply to save your changes back to the device.

Reset

Click Reset to begin configuring this screen afresh.

Table 89   Device Operation > Device Configuration > Advanced > DNS > DDNS (continued)