Defining an XCA configuration

To define an XCA configuration, code:

One XCA major node to represent the PU in the XCA. This is not required, but is used for network management purposes. If you are running the NetView® program, it is recommended that you code this definition statement. By defining this PU, you can have the XCA forward the same type of information that a 3174 cluster controller can forward. For example, any alerts detected by the XCA can be forwarded.
One XCA major node for each LAN connected to the XCA.
Note: If you have both subarea nodes (type 4 and type 5 nodes) and peripheral nodes (type 1, type 2, type 2.1, and subarea nodes that appear as type 2.1 nodes) attached to the LAN, you must code two GROUP definition statements in this XCA major node (one for the peripheral devices, and one for the subareas).
Major nodes for any peripheral devices connected to the LAN.

Note: VTAM® uses single-route broadcasts (rather than all-routes broadcasts) when attempting to connect to nodes on token-ring networks attached through the IBM® 3172 Interconnect Controller. When a node can be reached only through bridges, there must be a route from the IBM 3172 Interconnect Controller to the node, and that route must traverse bridges that are configured to route single-route broadcasts. See the Token Ring Network Architecture Reference for more information about all-routes and single-route broadcasts.