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Wireless IAD User Manual 
 
86 
Internet – DNS Server 
If Enable Automatic Assigned DNS checkbox is selected, this IAD will accept the 
first received DNS assignment from one of the PPPoA, PPPoE or MER/DHCP 
enabled PVC(s) during the connection establishment. If the checkbox is not selected, 
it is necessary for you to enter the primary and optional secondary DNS server IP 
addresses. Finish your setting and click the Apply button to save it and invoke it. 
Enable Automatic Assigned DNS:   
Check this box to enable this function, 
or uncheck this box to disable it. The 
default setting is checked. When this 
function is disabled, you have to offer 
the Primary DNS server and 
Secondary DNS server
If you are satisfied with the settings, 
click Apply. 
Internet – IGMP Proxy 
The Internet Group Management Protocol (IGMP) is an Internet protocol that 
provides a way for an Internet computer to report its multicast group membership to 
adjacent routers. 
 
The hosts interact with the system through the exchange of IGMP messages. When 
you want to configure IGMP proxy, the system will interact with other routers through 
the exchange of IGMP messages. However, when acting as the proxy, the system 
performs the host portion of the IGMP task as follows: 
¾ 
When being queried, the system will send membership reports to the group.   
¾ 
When one of the hosts joins a multicast address group which none of other 
hosts belongs to, the system will send unsolicited membership reports to that 
group. 
¾ 
When the last host in a particular multicast group leaves the group, the system 
will send a leave group membership report to the router’s group. 
Internet Connection:   
This field displays the internet 
connection(s) set in this IAD. 
IGMP Proxy Enabled: 
Check this box to enable this function 
or uncheck this box to disable this 
function. 
After finish the settings, click Apply