Netopia 3300-ENT Series, Руководство пользователя для прошивки

Страница: 233 / 334

Line Backup 8-1
Chapter 8
Line Backup
Netopia Firmware Version 8.7 offers line backup functionality in the event of a line failure on the primar y WAN
link:
• to an internal V.92 modem (suppor ted models) or
• to a backup default gateway.
This chapter covers the following topics:
• “Configuring Backup” on page 8-1
•
“Connection Profiles” on page 8-2
•
“WAN Configuration” on page 8-8
•
“Using Scheduled Connections with Backup” on page 8-12
•
“Backup Default Gateway” on page 8-14
•
“Backup Management/Statistics” on page 8-17
•
“QuickView” on page 8-18
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 a 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 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 8-2 .
•
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 8-8 .
• 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 8-9 .