Netopia 4000-Series Manuale Utente

The Backup Configuration screen appears.

This screen is used to configure the conditions under which backup will occur, if it will recover, and how the 
alternate gateway is configured.

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Select Backup is and press Return. A pop-up menu allows you to select Disabled, Manual, or Automatic. 
You enable backup by selecting either Manual or Automatic. If you enable backup, the subsequent menu 
items become visible.

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Select Requires Data Link Failure of (minutes). Enter the number of minutes you want the system to wait 
before the backup por t becomes enabled in the event of primar y line failure. This allows you to be sure the 
WAN connection is not merely briefly interrupted before the router switches to backup mode.

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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 par ticularly 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.

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Select Recovery to “WAN_name” (where WAN_name is the type of WAN connection you have, such as 
ADSL) and press Return. Choose either Manual or Automatic to determine how the system will return to the 
WAN link when it becomes available again. If you choose Automatic, the next two menu items become 
visible.

Automatic recover y only works upon loss of WAN connectivity.

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If you chose Automatic Recover y, select Requires Recovery of. Enter the number of minutes you want 
the system to wait before attempting to switch back to the WAN connection. This allows you to be sure 
that the WAN connection is well re-established before the router switches back to it from the backup 
mode.

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You can toggle Auto-Recovery on loss of Layer 2 to Yes or No (the default). This setting determines 
whether the router should tr y to Auto-Recover when the backup is invoked because of a Layer 2 loss, 
for example, a no valid Connection Profile. (Layer 1 is still available, and this is what recover y checks.) 

                             Backup Configuration

                                          +-----------+
         Backup Parameters                +-----------+
         Backup is...                     | Disabled  |
         Requires Failure of (minutes):   | Manual    |
         Ping Host Name or IP Address:    | Automatic |
                                          +-----------+
         Recovery to ADSL...                Automatic
         Requires Recovery of (minutes):    1
         Auto-Recovery on loss of Layer 2:  No

Automatically switches to Backup Port on loss of Layer 1 or 2.