7-10 Getting Started Guide
Backup Configuration screen
Navigate to the Backup Configuration screen.
Main
Menu
WAN
Configuration
Advanced Connection
Options
Backup
Configuration
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):
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.
•Select Backup is and from the
•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.
