TOPO

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   '-TOPO--=--CONNECT-'   

Controls the way APPN connections using this link station are reported to APPN topology and routing services for inclusion into APPN functions.

Note: Except in the switched major node, the only value for TOPO is CONNECT. If you specify APPN on the CONNTYPE start option, it is not necessary to code TOPO, as you automatically get a value of CONNECT.
TOPO=CONNECT
Specifies that APPN topology and routing services receives information about the connection and its characteristics when the connection is activated. When the connection is deactivated, APPN topology and routing services receives notification that the TG is inactive.