Bandwidth CAC Fallback Based on ICMP Failure Configuration

You can set up ICMP heartbeats and fallback bandwidth pools in the realm configuration. Leaving the icmp-detect-multiplier, icmp-advertisement-interval, or icmp-target-ip parameters blank or set to zero turns the feature off.

To enable bandwidth CAC fallback based on ICMP failure:

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

   ORACLE# configure terminal
   ORACLE(configure)#

2. Type media-manager and press Enter.

   ORACLE(configure)# media-manager
   ORACLE(media-manager)#

3. Type realm-config and press Enter. If you are adding this feature to a pre-existing realm configuration, you will need to select and edit your realm.

   ORACLE(media-manager)# realm-config
   ORACLE(realm-config)#

4. icmp-detect-multiplier—Enter the multiplier you want to use when determining how long to send ICMP pings before considering a target unreachable. This number multiplied by the time you set for the icmp-advertisement-interval determines the length of time. For example, if you set this parameter to 10 and the advertisement interval to 20, the Oracle® Enterprise Session Border Controller will send ICMP pings for 200 seconds before declaring the target unreachable.
5. icmp-advertisement-interval—Enter the time in seconds between ICMP pings the Oracle® Enterprise Session Border Controller sends to the target. The default is 0.
6. icmp-target-ip—Enter the IP address to which the Oracle® Enterprise Session Border Controller should send the ICMP pings so that it can detect when they fail and it needs to switch to the fallback bandwidth for the realm. There is no default.
7. fallback-bandwidth—Enter the amount of bandwidth you want available once the Oracle® Enterprise Session Border Controller has determined that the target is unreachable.

   If the fallback amount is less than the max-bandwidth value, the Oracle® Enterprise Session Border Controller might start to reject calls. It does so until enough calls are released to free adequate bandwidth to stay under the fallback limit and still accept calls.

8. Save and activate your configuration.