The SBC SWe Cloud communicates with the external PSX over the Management Interface and Packet Interface. The SBC SWe Cloud can choose any alternate IP addresses attached to the Packet Interface to communicate with the external PSX over the Management Interface and/or Packet Interface.
The communication between the SBC SWe Cloud and the external PSX follows a sequence, as described below:
The SBC requests registration and receives response from PSX.
The SBC periodically sends request to know the status of external PSX.
The SBC requests for policy and receives response.
The SBC requests for de-registration and receives response.
The SBC global configuration includes an optional metaVariable field (ipVar) to fetch an IP address from the PSX for use in connecting with the PSX. When the ipVar field is blank, the SBC picks any random IP address from the configured interface to connect with the PSX.
Additionally, the interfaceIpAddress field is added to the policyServer 'show' command to identify the IP address the SBC SWe Cloud uses to communicate with the PSX for the specified Policy Server.
Login to the CLI and perform the following steps to view the current default ACL statistics and metaVariable data before configuring the SBC SWe Cloud to use alternate IP addresses.
Enter the following command to view the default ACL statistics:
The Diameter Server (DS) protocol is used for communication between the SBC SWe Cloud and external PSX. The default Access Control List (ACL) for DS process is created over Management (MGT).
Enter the following command to view the IP addresses associated with the corresponding metaVariable.
show table system metaVariable
Configure alternate IP address of metaVariable to the ipVar
Enter the following command to associate the alternate IP address of metaVariable to the
Configure the SBC for an external PSX
Enter the following commands to enable the external PSX.
Display the configured ipVar
Enter the following command to view the default ACL statistics. The default ACL for the DS process entry contains the destination IP address with the IP address provided by the metaVariable configured in ipVar field.
show table addressContext default ipAccessControlList defaultAclStatistics
Display the external PSX global configuration
Enter the following command to view the external PSX global configuration:
show system policyServer globalConfig
Display the PSX status
Once the external PSX is enabled, use the following command to view the PSX status:
show table system policyServer policyServerStatus
Display the interface IP address over which the SBC communicates with the PSX
Enter the following command to view the new
show status system policyServer policyServerStatus
Verify successful communication between the configured SBC and PSX
Once the IP address is configured for SBC and PSX communication, perform the following verification steps.