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Configuring Dialer Watch

Dialer watch is a backup method that integrates backup dialing with routing capabilities and provides reliable connectivity without relying on a dialer filter to trigger outgoing ISDN connections. With dialer watch, the Services Router monitors the existence of a specified route and if the route disappears, the dialer interface initiates the ISDN connection as a backup connection.

Adding a Dialer Watch Interface on the Services Router

To configure dialer watch:

  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 52.
  3. Go on to Configuring the ISDN Interface for Dialer Watch.

Table 52: Adding a Dialer Watch Interface

Navigate to the Interfaces level in the configuration hierarchy.

  1. In the configuration editor hierarchy, select Configuration>View and Edit>Edit Configuration.
  2. Next to Interfaces, click Edit.

From the top of the configuration hierarchy, enter

edit interfaces

Select a dialer interface—for example, dl0.

Adding a description, such as dialer-watch, can help you identify one dialer interface from another.
  1. Under Interface name, select dl0.
  2. In the Description box, type dialer-watch.
  1. Enter

    edit dl0

  2. Enter

    set description dialer-watch

On a logical interface—for example, 0—configure the list of routes for dialer watch—for example, 172.27.27.0/24.
  1. Under Unit, click the logical unit number 0.
  2. Next to Dialer options, click Edit.
  3. Next to Watch list, click Add new entry.
  4. In the Prefix box, type 172.27.27.0/24.
  5. Click OK.
  1. Enter

    edit unit 0 dialer-options

  2. Enter

    set watch-list 172.27.27.0/24

Configuring the ISDN Interface for Dialer Watch

To configure the ISDN interface to participate as a dialer watch interface:

  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 53.
  3. If you are finished configuring the router, commit the configuration.
  4. Go on to any of the following optional tasks:
  5. To verify that the network interface is configured correctly, see Verifying the ISDN Configuration.

Table 53: Configuring an ISDN Interface for Dialer Watch

Navigate to the Interfaces level in the configuration hierarchy, and select an ISDN physical interface—for example, br-1/0/3.

  1. In the configuration editor hierarchy, select Configuration>View and Edit>Edit Configuration.
  2. Next to Interfaces, click Edit.
  3. Under Interface name, click br-1/0/3.

From the top of the configuration hierarchy, enter

edit interfaces br-1/0/3 dialer-options pool dw-group

Configure dialer watch options for each ISDN interface participating in the dialer watch feature.

Each ISDN interface must have the same pool identifier to participate in dialer watch. Therefore, the dialer pool name dlw-group, for the dialer watch interface configured in Table 52, is used when configuring the ISDN interface.

  1. Next to Dialer options, click Edit.
  2. Next to Pool, click Add new entry.
  3. In the Pool identifier box, type dw-group.
  4. Click OK.
 
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