P-660RU-T v2 User’s Guide
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H A P T E R
6
WAN Setup
This chapter describes how to configure WAN settings.
6.1 WAN Overview
A WAN (Wide Area Network) is an outside connection to another network or the Internet.
See
for more information on the fields in the WAN screens.
6.2 Metric
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".
The metric sets the priority for the ZyXEL Device’s routes to the Internet. If any two of the
default routes have the same metric, the ZyXEL Device uses the following pre-defined
priorities:
• Normal route: designated by the ISP (see
• Traffic-redirect route (see
)
• WAN-backup route, also called dial-backup (see
)
For example, if the normal route has a metric of "1" and the traffic-redirect route has a metric
of "2" and dial-backup route has a metric of "3", then the normal route acts as the primary
default route. If the normal route fails to connect to the Internet, the ZyXEL Device tries the
traffic-redirect route next. In the same manner, the ZyXEL Device uses the dial-backup route
if the traffic-redirect route also fails.
If you want the dial-backup route to take first priority over the traffic-redirect route or even the
normal route, all you need to do is set the dial-backup route’s metric to "1" and the others to
"2" (or greater).
"
IP Policy Routing overrides the default routing behavior and takes priority over
all of the routes mentioned above.
Summary of Contents for P-660RU-T3 V2
Page 2: ......
Page 7: ...Safety Warnings P 660RU T v2 User s Guide 7...
Page 8: ...Safety Warnings P 660RU T v2 User s Guide 8...
Page 10: ...Contents Overview P 660RU T v2 User s Guide 10...
Page 16: ...Table of Contents P 660RU T v2 User s Guide 16...
Page 20: ...List of Figures P 660RU T v2 User s Guide 20...
Page 23: ...23 PART I Introduction Introducing the ZyXEL Device 25 Introducing the Web Configurator 29...
Page 24: ...24...
Page 34: ...Chapter 2 Introducing the Web Configurator P 660RU T v2 User s Guide 34...
Page 35: ...35 PART II Wizard Wizard Setup 37...
Page 36: ...36...
Page 48: ...Chapter 3 Wizard Setup P 660RU T v2 User s Guide 48...
Page 50: ...50...
Page 52: ...Chapter 4 Password Setup P 660RU T v2 User s Guide 52...
Page 68: ...Chapter 6 WAN Setup P 660RU T v2 User s Guide 68...
Page 78: ...Chapter 10 Remote Management Configuration P 660RU T v2 User s Guide 78...
Page 90: ...Chapter 11 Universal Plug and Play UPnP P 660RU T v2 User s Guide 90...
Page 101: ...101 PART IV Maintenance and Troubleshooting Maintenance 103 Troubleshooting 115...
Page 102: ...102...
Page 120: ...120...
Page 124: ...Appendix A Product Specifications P 660RU T v2 User s Guide 124...
Page 156: ...Appendix E Virtual Circuit Topology P 660RU T v2 User s Guide 156...
Page 160: ...Appendix F Legal Information P 660RU T v2 User s Guide 160...