Configuring QoS Constraints

Your first step to enabling QoS based routing is to set up a QoS constraints configuration. This configuration is where you enter major and critical thresholds, as well as the load reduction for the realm should the R-Factor exceed the major threshold.

To set up a QoS constraints configuration:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal
   ORACLE(configure)#

2. Type session-router and press Enter.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

3. Type qos-constraints and press Enter.

   ORACLE(session-router)# qos-constraints
   ORACLE(qos-constraints)#

4. name—Enter the name of this QoS constraints configuration. This parameter uniquely identifies the configuration, and you use this value when applying the configuration to a realm. This parameter has no default and is required.
5. state—Set the state of this QoS constraints configuration. The default is enabled, but you can set this parameter to disabled if you want to stop applying these constraints.
6. major-rfactor—Enter a numeric value between 0 (default) and 9321 to set the threshold that determines when the Oracle® Enterprise Session Border Controller applies the call reduction rate. If you leave this parameter set to 0, then the Oracle® Enterprise Session Border Controller will not apply a major threshold for any realm where you apply this QoS constraints configuration.

   Note that this value must be greater than that you set for the critical-rfactor, except when the major-rfactor is 0.

7. critical-rfactor—Enter a numeric value between 0 (default) and 9321 to set the threshold that determines when the Oracle® Enterprise Session Border Controller rejects all inbound calls for the realm, and rejects outbound calls when there is no alternate route. If you leave this parameter set to 0, then the Oracle® Enterprise Session Border Controller will not apply a critical threshold for any realm where you apply this QoS constraints configuration.

   Note that this value must be less than that you set for the major-rfactor, except when the major-rfactor is 0.

8. call-load-reduction—Enter a number from 0 (default) to 100 representing the percentage by which the Oracle® Enterprise Session Border Controller will reduce calls to the realm if the major-rfactor is exceeded. If you leave this parameter set to 0, then the Oracle® Enterprise Session Border Controller will not reduce call load for the realm—even when the major-rfactor is configured.

   This is the percentage of inbound and outbound calls the Oracle® Enterprise Session Border Controller will reject. For example, if you set this parameter to 50 and the major threshold is exceeded, then the Oracle® Enterprise Session Border Controller rejects every other call to the realm.

9. Save and activate your configuration.