Solve communication problems using WRKAPPNSTS

The Work with APPN Status (WRKAPPNSTS) command provides session-related information for advanced program-to-program communications (APPC) controller descriptions running Advanced Peer-to-Peer Networking® (APPN), or high-performance routing (HPR). The controller descriptions represent connections to adjacent systems. You use the WRKAPPNSTS command to provide the following information about APPN controller descriptions:

• The system shows all the location pairs that have one or more sessions over the controller description. The session activity is not limited to those sessions in which the local system is the source, or target of the session. Information about APPN intermediate sessions and cases when the local system is performing the APPN, or HPR boundary function, are also provided.
  Note:
  Automatic Network Routing (ANR) traffic is not shown.
• You can display session information for the location pairs that are associated with a controller. The session information provides a tie between a particular session and the device description the system uses. For example, a device description attached to the real controller description is shown, or an APPN virtual controller description is shown.
• You can display information about Rapid Transport Protocol (RTP) connections that either originate, or end on the local system. It is also possible to see the location pairs and session information associated with the sessions that are carried over the RTP connection.
• You can display the route that a particular RTP connection has taken through an HPR subnet.
• You can request the system perform some operations against these RTP connections. These operations include requesting the system to perform a non-disruptive path switch, and ending an RTP connection that is currently active. You can issue both of these operations against one of the following:
  • A single RTP connection
  • All of the RTP connections that have the first hop of their route across the controller description being displayed