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Configuring Dial Backup for a USB Modem Connection

Dial backup allows one or more dialer interfaces to be configured as the backup link for the primary serial interface. The backup dialer interfaces are activated only when the primary interface fails. USB modem backup connectivity is supported on all interfaces except ls-0/0/0.

To configure a primary interface for backup connectivity:

  1. Navigate to the top of the interfaces configuration hierarchy in either the J-Web or CLI configuration editor.
  2. Perform the configuration tasks described in Table 73.
  3. If you are finished configuring the device, commit the configuration.

Table 73: Configuring a Primary Interface for USB Modem Dial Backup

Task

J-Web Configuration Editor

CLI Configuration Editor

Navigate to the Interfaces level in the configuration hierarchy.

  1. In the J-Web interface, select Configuration>Edit Configuration>View and Edit.
  2. Next to Interfaces, click Edit.

From the [edit] hierarchy level, enter

edit interfaces t1-1/0/0 unit 0

Select the physical interface for USB modem USB modem backup connectivity—for example, t1–1/0/0.

  1. In the Interface name column, click the physical interface name.
  2. Under Unit, in the Interface unit number column, click 0.
 

Configure the backup dialer interface—for instance, dl0.0.
  1. Next to Backup options, click Configure.
  2. In the Interface box, type dl0.0.
  3. Click OK until you return to the Interfaces page.

Enter

set backup-options interface dl0.0

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