Specifies 1–8 character network identifier.
On BUILD: (network_id) specifies the network name of the host coded on the NETID start option. This operand is required for NCP V4R3 and later releases.
On HOST: (network_id) specifies a 1–8 character name that identifies the network containing the corresponding host node. It is used along with the SUBAREA operand to determine which HOST definition statement the VTAM host should process. This operand is optional.
On NETWORK: (network_id) specifies the 1–8 character network identifier of the nonnative network in which the gateway SSCP resides. If the value for NETID matches the value of VTAM’s NETID start option, VTAM uses the MAXSUBA value on this statement as the maximum subarea value, and the SUBAREA value is the actual subarea for the gateway NCP representation in the VTAM network.
On PU: (network_id) specifies a 1–8 character network identifier. For type 4 and 5 physical units, network_id identifies the network of the subarea serviced by the line. NETID is used only in gateway NCPs, and is required for a connection to another network.
LU-LU sessions might fail if the NETID sent in the BIND from the LU is different than the NETID specified in VTAM (even though PU-PU connections can be established). If no NETID is included in the BIND, or if the NETID is identical to that specified by VTAM, the LU-LU session should activate.
For type 2 physical units, NETID is used in conjunction with the XNETALS start option in support of nonnative network connection. See XNETALS start option for information about XNETALS.
If you specify NETID on the PU definition statement, VTAM ensures that when the physical unit is active, the connecting resource is within the network specified by NETID. If you omit NETID, VTAM dynamically processes the network ID when a connection is established. If you code NETID, and nonnative network connection is not supported, the definition is rejected unless the operand specifies VTAM’s network ID.
If dynamic dial-out connections are required (that is, a session request drives the dial), NETID must be predefined. Otherwise, VTAM might not be able to determine the connecting network ID and the resultant sessions might fail. If leased connections are not established, and if NETID is not predefined, directory requests could fail because of VTAM’s inability to determine the resource’s actual network.