Netopia 3366-ENT, Руководство по началу работы

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Line Backup 7-1
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The Netopia 3366-ENT offers line backup functionality in the event of a line failure on the DSL primar y WAN link:
• to its internal V.92 modem or
• to a backup default gateway.
This chapter covers the following topics:
• “Configuring Backup” on page 7-1
• “Connection Profiles” on page 7-2
•
“WAN Configuration” on page 7-8
•
“Using Scheduled Connections with Backup” on page 7-13
•
“Backup Default Gateway” on page 7-15
The purpose of line backup is to provide a recover y mechanism in the event that the primar y connection fails. A
failure can be either line loss, for example by central site switch failure or physical cable breakage, or loss of
end-to-end connectivity. Detection of one of these failures causes the router to switch from using the primar y
DSL WAN connection to using the built-in V.92 modem. Alternatively, you can choose backup to an alternate
gateway on the Ethernet LAN. In the event of a loss of primar y connectivity you have the option of switching
back to the primar y por t automatically once it has recovered its connection.
Configuring Backup
The following menus suppor t dial backup configuration:
•
the Add Connection Profile menus under the WAN Configuration menus
Here you choose Encapsulation Type = PPP , fill out the correct IP Profile Parameters information, select
Backup as the Interface Group , and fill out the Telco Options . See “Connection Profiles” on page 7-2 .
• the MODEM (Wan Module 2) Setup menu under the WAN Configuration, WAN (Wide Area Network)
Setup menus
Here you configure the Internal Modem Setup that governs a number of general behavior settings for the
internal V.92 modem. See “WAN Configuration” on page 7-8 .
•
the Backup Configuration menu under WAN Configuration , Advanced Connection Options
Here you can select Backup is = Automatic , and Recovery is Automatic . See “Backup Configuration
screen” on page 7-10 .
• the Backup IP Gateway menu item in the IP Setup screen under the System Configuration menu
Here you enter a Backup Gateway IP address. See “IP Setup” on page 7-7 . Alternatively, you can choose a
different backup gateway device; see “Backup Default Gateway” on page 7-15 .