WebSphere brand IBM WebSphere Premises Server, Version 6.1.x

Understanding Application Ping

Application Ping is the functionality of the edge controller to check the availability of the entire RFID system.

Overview

The concept of Application Ping is similar to the concept of the Internet Control Message Protocol (ICMP), which is a protocol for controlling messages reporting errors between a host server and a gateway. Application Ping uses an agent on the edge controller to periodically check whether the whole RFID system is available by sending out an Application Ping Request on the MicroBroker bus. The Application Ping Request travels from the edge controller through WebSphere® Premises Server to the back-end of the RFID system. The back-end system then responds to the Application Ping Request with an Application Ping Response message, which includes any errors from the back-end devices. WebSphere Premises Server routes the Application Ping Response back to the originating edge controller.

If there is no Application Ping Response to the Application Ping Request, then the edge controller does not recognize the RFID system as available.

Application Ping configuration settings

The setting for Application Ping is configurable in the SystemAgent. The possible values for the com.ibm.rfid.applping.shortcut property are true or false.

A value of false means that the Application Ping Request is passed through WebSphere Premises Server and answered by the back-end RFID system. A value of true means that the Application Ping Request is answered by WebSphere Premises Server.

The default value is true.

To view the Application Ping configuration settings in the WebSphere Premises Server Administrative Console, navigate to Agent Configuration > SystemAgent. Look for com.ibm.rfid.applping.shortcut in the Name column. The current set value for each configuration variable is in the Value column.


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