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7-10 Getting Started Guide
Backup Configuration screen
Navigate to the Backup Configuration screen.
This screen is used to configure the conditions under which backup will occur, if it will recover, and how the
modem is configured.
For the internal V.92 modem, the Backup Configuration screen appears as follows, when all options are enabled
(default screen shows fewer menu items until some are enabled):
• Select Backup is and from the pop-up menu, select Automatic (default), Manual, or Disabled. You enable
line backup by selecting either Manual or Automatic. For fail-over purposes, choose Automatic.
• Select Requires Failure of (minutes) and enter the number of minutes that the system should wait before
it assumes that a connection failure has occurred. After that period, the system would switch to backup
mode and connect via the modem.
Note: Backup and Recovery have resolutions of five seconds. This is how often the router evaluates the state
of the connections and makes decisions.
• Select Ping Host Name or IP Address and enter an IP address or resolvable DNS name that the router will
ping. This is an optional item that is particularly useful for testing if the remote end of a VPN connection
has gone down. Should this address become unreachable the router will treat this as a loss of connectivity
and begin the backup timer. This loss is a Layer 2 loss.
Set the Ping Host Name or IP Address to the router's Default Gateway, or other reliable IP address
elsewhere on the backbone – for example, a DNS server. This will ensure that the router will initiate backup
connection on loss of Layer 3.
WANMain
Menu
Advanced Connection
OptionsConfiguration
Backup
Configuration
Backup Configuration
Backup Parameters
Backup is... Automatic
Requires Failure of (minutes): 1
Ping Host Name or IP Address:
Recovery to ADSL... Automatic
Requires Recovery of (minutes): 1
Clear Backup Call only if idle: Yes
Requires idle time of (seconds): 300
Data Link Encapsulation is Async PPP
Enter override Failure timer on loss of Layer 2. 0 is default Failure timer.
Enter Information supplied to you by your telephone company.