Netopia R7200 manual Chapter Line Backup

Line Backup 9-1

Chapter 9

Line Backup

The Netopia R7200 SDSL Router offers line backup functionality in the event of a line failure on your primary WAN link.

This chapter covers the following topics:

■“WAN Configuration” on page 9-2

■“IP Setup screen” on page 9-4

■“Connection Profiles” on page 9-5

■“Using Scheduled Connections with Backup” on page 9-5

■“Management/Statistics” on page 9-7

■“QuickView” on page 9-9

■“Event Logs” on page 9-9

■“SNMP Support” on page 9-9

The purpose of line backup is to provide a recovery mechanism in the event that the primary connection fails. A failure can be either line loss, for example by central site switch failure or physical cable breakage, or in the case of Frame Relay (with LMI) or PPP, loss of end-to-end connectivity. Detection of one of these failures causes the router to switch from using the primary WAN port to using the Auxiliary port to which a modem has been attached or to an internal asynchronous modem WAN module if one is installed. The port used for backup is determined by whether or not a second WAN module is installed in the router. If there is only one WAN module installed then the Auxiliary port is the backup port. If an asynchronous modem WAN module is installed in the second slot, then that is the backup port.

In the event of a loss of primary connectivity you have the option of switching back to the primary port automatically once it has recovered its connection.

The supported backup ports are the Auxiliary port or an asynchronous modem WAN module in Switched Asynchronous mode with PPP as the data link encapsulation.