ZyXEL Communications ZyXEL ZyWALL 2WG - Manual (Page 152)

Chapter 8 WAN Screens
ZyWALL 2WG User’s Guide
152
8.12 WAN 2 (3G WAN)
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 ZyWALL 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 ZyWALL 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 back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
Table 41 NETWORK > WAN > WAN 1 (PPTP Encapsulation) (continued)
LABEL DESCRIPTION