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Configuring a Dialer Interface (Required)

The dialer interface (dl) is a logical interface configured to establish ISDN connectivity. You can configure multiple dialer interfaces for different functions on the Services Router.

To configure a logical dialer interface for the Services Router:

  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 43.
  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 43: Adding a Dialer Interface to a Services Router

Task

J-Web Configuration Editor

CLI Configuration Editor

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 Configure or Edit.

From the top of the configuration hierarchy, enter

edit interfaces

Create the new interface—for example, dl0.

Adding a description can differentiate between different dialer interfaces—for example, backup.
  1. Next to Interface, click Add new entry.
  2. In the Interface name box, type dl0.
  3. In the Description box, type backup.
  4. Click OK.

Create and name the interface:

  1. edit interfaces dl0
  2. set interfaces dl0 description backup

Configure encapsulation options—for example, cisco-hdlc.

  • cisco-hdlc—Cisco-compatible High-Level Data Link Control is a group of protocols for transmitting data between network points.
  • ppp—Point-to-Point Protocol is a protocol used for communication between two computers using a serial interface.
  1. In the Encapsulation column, next to the new interface, click Edit.
  2. From the Encapsulation list, select cisco-hdlc.

Enter

set encapsulation cisco-hdlc

Enter a hold-time value in milliseconds—for example, 60. Hold-time value is used to damp interface transitions. When an interface goes from up to down, it is not advertised as down to the rest of the system until it remains down for the hold-time period. Similarly, an interface is not advertised as up until it remains up for the hold-time period.
  1. In the Hold time section, type 60 in the Down box.
  2. In the Up box, type 60.
  1. Enter

    set hold-time down 60

  2. Enter

    set hold-time up 60

Create the logical unit—for example, 0.

Note:

You can only set the logical unit to 0 unless you are configuring the dialer interface for Multilink PPP encapsulation.

  1. Next to Unit, click Add new entry.
  2. In the Interface unit number box, type 0.
  3. Next to Dialer options, select Yes, and then click Configure.

Enter

set unit 0

Configure dialer options.

  • Activation delay—Time to wait before activating the backup interface once the primary interface is down—for example, 30. Default value is 0 seconds with a maximum value of 60 seconds. Use only for dialer backup and dialer watch.
  • Deactivation delay—Time to wait before deactivating the backup interface once the primary interface is up—for example, 30. Default value is 0 seconds with a maximum value of 60 seconds. Use only for dialer backup and dialer watch.
  • Idle timeout—Time a connection is idle before disconnecting—for example, 30. Default value is 120 seconds with a range from 0 to 4294967295.
  • Initial route check—Time to wait before checking if the primary interface is up—for example, 30. Default value is 120 seconds with a range of 1 to 300 seconds.
  • Load interval—Interval of time between calculations of the average load on the network. Default value is 60 seconds and has a range of 20-180 seconds incremented in 10 seconds. Used only when configuring bandwidth-on-demand.
  • Load threshold—Percentage of load on all links—for example 90. Default value is 100 with a range from 0 to 100. Used only for configuring bandwidth on demand.
  • Pool—Name of a group of ISDN interfaces configured to use the dialer interface—for example, 3.
  1. In the Activation delay box, type 60.
  2. In the Deactivation delay box, type 30.
  3. In the Idle timeout box, type 30.
  4. In the Initial route check box, type 30.
  5. In the Pool box, type 3.
  1. Enter

    edit dialer-options

  2. Enter

    set activation-delay 30

  3. Enter

    set deactivation-delay 30

  4. Enter

    set idle-timeout 30 initial-route-check 30 pool 3

Configure the remote destination to call—for example, 5551212.

In the Dial string box, type 5551212.

Enter

set dial-string 5551212

Configure a list of routes to watch—for example, 192.1.1.0/24. Specify one or more IP address prefixes.

  1. Next to Watch list, click Add new entry.
  2. In the Prefix box, type 192.1.1.0/24.
  3. Click OK until you return to the Unit page.

Enter

set watch-list 192.1.1.0/24

Configure source and destination IP addresses for the dialer interface—for example, 172.20.10.2 and 172.20.10.1.
  1. Select Inet under Family, and click Edit.
  2. Next to Address, click Add new entry.
  3. In the Source box, type 172.20.10.2.
  4. In the Destination box, type 172.20.10.1.
  1. Enter

    set family inet address 172.20.10.2

  2. Enter

    set family inet address destination 172.20.10.1

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