z/OS Communications Server: SNA Customization
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Border node and interchange node options

z/OS Communications Server: SNA Customization
SC27-3666-00

The border node and interchange node options field is a 2-byte field that includes certain control information that is used for the border node selection function and the interchange node selection function of the directory services management exit. This structure is valid only if one of the following is true:
  • The node is defined as a border node and the border node selection function of the directory services management exit is allowed.
  • The node is defined as a network node and the interchange node selection function of the directory services management exit is allowed.
Table 1. Border node and interchange node options

Dec (Hex)
offset

Size
(Bytes)

 
Description

0 (0) 1 Specifies the maximum number of node additions allowed during border node selection. A value from 0 (X'0') to 255 (X'FF') can be specified.
1 (1) 1 Border node selection exit invocation flags
B'1... ....'
A search can be sent to a non-native node without invoking the border node selection function if the search request is due to existing database information.
B'0... ....'
A search cannot be sent to a non-native node without invoking the border node selection function even if the search request is due to existing database information.
B'.1.. ....'
A search can be sent for a cross-domain subarea resource without invoking the border node selection function or the interchange node function. This is the default.
B'.0.. ....'
A search cannot be sent for a cross-domain subarea resource without invoking the border node selection function or the interchange node function.

The remaining bits are reserved.

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