ZyXEL Communications NBG4615 User Manual

Chapter 17 WAN

NBG4615 User’s Guide

To change your NBG4615’s advanced WAN settings, click Network > WAN > Advanced. The 
screen appears as shown.

Network > WAN > Advanced 

The following table describes the labels in this screen.

Use this screen to enable IGMP snooping if you have LAN users that subscribe to multicast services.

Network > WAN > Advanced

Multicast Setup

Multicast

Select IGMPv1/v2 to enable multicasting. This applies to traffic routed 
from the WAN to the LAN. 

Select None to disable this feature. This may cause incoming traffic to be 
dropped or sent to all connected network devices.

Auto-Subnet Configuration

None

Select this option to have the NBG4615 do nothing when it gets a WAN IP 
address in the range of 192.168.x.y (where x and y are from zero to nine) 
or in the same subnet as the LAN IP address.

Enable Auto-bridge 
mode

Select this option to have the NBG4615 switch to bridge mode automatically 
when the NBG4615 gets a WAN IP address in the range of 192.168.x.y 
(where x and y are from zero to nine) no matter what the LAN IP address is. 

Enable Auto-IP-
Change mode

Select this option to have the NBG4615 change its LAN IP address to 
10.0.0.1 or 192.168.1.1 accordingly when the NBG4615 gets a dynamic 
WAN IP address in the same subnet as the LAN IP address 192.168.1.1 or 
10.0.0.1.

The NAT, DHCP server and firewall functions on the NBG4615 are still 
available in this mode.

Apply

Click Apply to save your changes back to the NBG4615.

Cancel

Click Cancel to begin configuring this screen afresh.