ZyXEL Communications wireless n gigbit router zyxel User Manual

Chapter 8 WAN

NBG-460N User’s Guide

The following section contains additional technical information about the NBG-
460N features described in this chapter.

IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but 
IGMP version 1 is still in wide use. If you would like to read more detailed 
information about interoperability between IGMP version 2 and version 1, please 
see sections 4 and 5 of RFC 2236. The class D IP address is used to identify host 
groups and can be in the range 224.0.0.0 to 239.255.255.255. The address 
224.0.0.0 is not assigned to any group and is used by IP multicast computers. The 
address 224.0.0.1 is used for query messages and is assigned to the permanent 
group of all IP hosts (including gateways). All hosts must join the 224.0.0.1 group 
in order to participate in IGMP. The address 224.0.0.2 is assigned to the multicast 
routers group. 

Enable Auto-bridge 
mode

Select this option to have the NBG-460N switch to bridge mode 
automatically when the NBG-460N 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. 

Note: The NBG-460N automatically turns back to Router Mode 

when the NBG-460N gets a WAN IP address that is not 
in the 192.168.x.y range.

Clear this check box if you are playing IPTV as the NBG-460N needs 
to be in Router Mode for the IPTV STB port to work. 

Apply

Click Apply to save your changes back to the NBG-460N.

Reset

Click Reset to begin configuring this screen afresh.

Table 51   Network > WAN > Advanced