ZyXEL Communications P-660HN-F1A, User Manual

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Chapter 6 WAN Setup
P-660HN-F1A User’s Guide
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6.5 WAN Technical Reference
This section provides some technical background information about the topics
covered in this chapter.
6.5.1 Encapsulation
Be sure to use the encapsulation method required by your ISP. The P-660HN-F1A
supports the following methods.
6.5.1.1 ENET ENCAP
The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented
with the IP network protocol. IP packets are routed between the Ethernet interface
and the WAN interface and then formatted so that they can be understood in a
bridged environment. For instance, it encapsulates routed Ethernet frames into
bridged ATM cells. ENET ENCAP requires that you specify a gateway IP address in
the Gateway IP Address field in the wizard or WAN screen. You can get this
information from your ISP.
6.5.1.2 PPP over Ethernet
The P-660HN-F1A supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is
an IETF Draft 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.
Metric This field sets this route's priority among the routes the P-660HN-
F1A uses.
The metric represents the "cost of transmission". A router
determines the best route for transmission by choosing a path
with the lowest "cost". RIP routing uses hop count as the
measurement of cost, with a minimum of "1" for directly
connected networks. The number must be between "1" and "15";
a number greater than "15" means the link is down. The smaller
the number, the lower the "cost".
Backup Gateway Type the IP address of your backup gateway in dotted decimal
notation. The P-660HN-F1A automatically forwards traffic to this
IP address if the P-660HN-F1A's Internet connection terminates.
Apply Click Apply to save the changes.
Cancel Click Cancel to begin configuring this screen afresh.
Table 24 Network > Internet (WAN) > WAN Backup
LABEL DESCRIPTION