Chapter 8 WAN Screens

 

Table 38 NETWORK > WAN > WAN 1 (Ethernet Encapsulation) (continued)

 

LABEL

DESCRIPTION

 

Multicast Version

Choose None (default), IGMP-V1or 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

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

 

Address from

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

 

LAN

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

Enter the IP address of the computer on the LAN whose MAC you are cloning.

 

computer’s MAC

If you clone the MAC address of a computer on your LAN, it is recommended that

 

address – IP

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

 

Address

 

 

Apply

Click Apply to save your changes back to the ZyWALL.

 

 

 

 

Reset

Click Reset to begin configuring this screen afresh.

 

 

 

8.12.2 PPPoE Encapsulation

The ZyWALL supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.) connection. The PPPoE option is for a dial-up connection using PPPoE.

For the service provider, PPPoE offers an access and authentication method that works with existing access control systems (for example RADIUS).

One of the benefits of PPPoE is the ability to let you access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for individuals.

Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no specific configuration of the broadband modem at the customer site.

By implementing PPPoE directly on the ZyWALL (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the ZyWALL does that part of the task. Furthermore, with NAT, all of the LANs’ computers will have access.

The screen shown next is for PPPoE encapsulation.

 

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ZyWALL 2WG User’s Guide