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Configuring Dynamic Call Admission Control on WAN Interfaces (Optional)

To configure dynamic call admission control (CAC), you define the bearer bandwidth limit (BBL) and activation priority on each WAN interface responsible for providing call bandwidth. In this example, a Gigabit Ethernet, T1, and ISDN BRI interface are configured with the BBL and activation priority values shown in Table 113.

Table 113: Dynamic CAC Configuration Example

Interface Providing Call Bandwidth

Bearer Bandwidth Limit (BBL) Value

Activation Priority Value

Gigabit Ethernet

3000 Kbps

200

T1

1000 Kbps

150

ISDN BRI

128 Kbps

100

The Gigabit Ethernet interface is used as the primary link for providing call bandwidth because it has the highest activation priority value. When the Gigabit Ethernet interface is active, the TGM550 reports its BBL value of 3000 Kbps to the MGC. If the Gigabit Ethernet interface is fails, the TGM550 automatically switches over to the T1 interface because it has the next highest activation priority. The TGM550 now reports the BBL value of the T1 interface to the MGC. If the T1 interface also fails, the TGM550 switches over to the ISDN BRI interface and reports the BBL value of the ISDN BRI interface to the MGC. Configuring dynamic CAC on multiple WAN interfaces allows the MGC to automatically control the call bandwidth when interfaces responsible for providing call bandwidth are unavailable.

For more information about dynamic CAC, see Dynamic Call Admission Control Overview.

To configure dynamic CAC on Services Router WAN interfaces:

  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 114.
  3. If you are finished configuring the router, commit the configuration.
  4. Configure Call Admission Control: Bandwidth Limitation (CAC-BL) on Avaya Communication Manager. For more information, see the Administrator Guide for Avaya Communication Manager.
  5. To verify that dynamic CAC is configured correctly, see Verifying the VoIP Configuration.

Table 114: Configuring Dynamic CAC

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 ge-0/0/3

Select the Gigabit Ethernet interface—for example, ge-0/0/3

In the Interface name column, click ge-0/0/3.

Configure dynamic CAC on logical unit 0 of the Gigabit Ethernet interface with the activation priority and BBL values given in Table 113.

Activation priority has a range from 1 to 255. The default activation priority is 50.

Bearer bandwidth limit has a range from 0 to 9999 Kbps. The default BBL value is -1, signifying that the complete bandwidth of the interface is available for voice traffic. Configure the BBL value 0 to report zero bandwidth for bearer traffic to the MGC or to use the interface only for signaling purposes.
  1. Under Unit, next to 0, click Edit.
  2. Next to Dynamic call admission control, click Configure or Edit.
  3. In the Activation priority box, type 200.
  4. In the Bearer bandwidth limit box, type 3000.
  5. Click OK until you return to the Interfaces page.
  1. Enter

    edit unit 0

  2. Enter

    set dynamic-call-admission-control activation-priority 200 bearer-bandwidth-limit 3000

Select the T1 interface—for example, t1-6/0/0

In the Interface name column, click t1-6/0/0.

From the [edit] hierarchy level, enter

edit interfaces t1-6/0/0

Configure dynamic CAC on logical unit 0 of the T1 interface with the activation priority and BBL values given in Table 113.
  1. Under Unit, next to 0, click Edit.
  2. Next to Dynamic call admission control, click Configure or Edit.
  3. In the Activation priority box, type 150.
  4. In the Bearer bandwidth limit box, type 1000.
  5. Click OK until you return to the Interfaces page.
  1. Enter

    edit unit 0

  2. Enter

    set dynamic-call-admission-control activation-priority 150 bearer-bandwidth-limit 1000

Select the ISDN BRI interface—for example, br-1/0/3

In the Interface name column, click br-1/0/3.

From the [edit] hierarchy level, enter

edit interfaces br-1/0/3

Configure dynamic CAC on logical unit 0 of the ISDN BRI interface with the activation priority and BBL values given in Table 113.
  1. Under Unit, next to 0, click Edit.
  2. Next to Dynamic call admission control, click Configure or Edit.
  3. In the Activation priority box, type 100.
  4. In the Bearer bandwidth limit box, type 128.
  5. Click OK.
  1. Enter

    edit unit 0

  2. Enter

    set dynamic-call-admission-control activation-priority 100 bearer-bandwidth-limit 128

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