z/OS Communications Server: SNA Network Implementation Guide
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Control point

z/OS Communications Server: SNA Network Implementation Guide
SC27-3672-01

Each APPN node has a control point (CP) that manages the node and its resources. Control points provide function for the APPN network similar to the function the SSCP provides for the subarea network. The CP can implement end node or network node functions.

The CP:
  • Activates and deactivates network resources
  • Assists in session initiation and termination
  • Routes cross-domain requests
  • Maintains a dynamic representation of the network in the topology and directory services databases (network nodes only)

In an end node, the CP communicates only with the CP in the network node that provides it with network services. In a network node, the CP communicates with the CPs in adjacent network nodes and with the CPs in adjacent end nodes for which the CP is the network node server. The CP directs the activation and deactivation of resources and links and helps LUs start and stop sessions.

The control point name of an adjacent APPN node can be statically defined or determined during XID exchange. The control point name of a VTAM® node is determined by the SSCPNAME start option.

Go to the previous page Go to the next page




Copyright IBM Corporation 1990, 2014