ZyXEL Communications NBG410W3G Series User Manual

Chapter 6 WAN Screens

NBG410W3G Series User’s Guide

3G (Third Generation) is a digital, packet-switched wireless technology. Bandwidth usage is 
optimized as multiple users share the same channel and bandwidth is only allocated to users 
when they send data. It allows fast transfer of voice and non-voice data and provides 
broadband Internet access to mobile devices. 

RIP Version

The RIP Version field controls the format and the broadcasting method of the RIP 

packets that the ZyXEL Device sends (it recognizes both formats when 

receiving). 

Choose RIP-1, RIP-2B or RIP-2M.

RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is 

probably adequate for most networks, unless you have an unusual network 

topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the 

difference being that RIP-2B uses subnet broadcasting while RIP-2M uses 

multicasting. Multicasting can reduce the load on non-router machines since they 

generally do not listen to the RIP multicast address and so will not receive the RIP 

packets. However, if one router uses multicasting, then all routers on your 

network must use multicasting, also. By default, the RIP Version field is set to 

RIP-1.

Enable Multicast

Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP 

is a network-layer protocol used to establish membership in a Multicast group - it 

is not used to carry user data.

Multicast Version

Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast 

Protocol) is a session-layer protocol used to establish membership in a Multicast 

group – it is not used to carry user data. 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.

Spoof WAN MAC 

Address from LAN

You can configure the WAN port's MAC address by either using the factory 

assigned default MAC Address or cloning the MAC address of a computer on 

your LAN. By default, the ZyXEL Device uses the factory assigned MAC Address 

to identify itself on the WAN.
Otherwise, select the check box next to Spoof WAN MAC Address from LAN 

and enter the IP address of the computer on the LAN whose MAC you are 

cloning. Once it is successfully configured, the address will be copied to the rom 

file (ZyNOS configuration file). It will not change unless you change the setting or 

upload a different ROM file. 

Clone the 

computer’s MAC 

address – IP 

Address

Enter the IP address of the computer on the LAN whose MAC you are cloning.
If you clone the MAC address of a computer on your LAN, it is recommended that 

you clone the MAC address prior to hooking up the WAN port.

Apply

Click Apply to save your changes.

Reset

Click Reset to begin configuring this screen afresh.

Table 20   NETWORK > WAN > WAN 1 (PPTP Encapsulation) (continued)