Library /sys$common/syshlp/DECNET_REGISTER_COMMANDS.HLB  —  DEREGISTER
 Remove a node registration from a directory service.

     DEREGISTER [DECNET] NODE node-id
         [ DIRECTORY_SERVICE dir-service ]
         [ PHASEIV_PREFIX addr-prefix ]
         [ REVERSE_DIRECTORY rev-dir-name ]
         [ SYNONYM_DIRECTORY syn-dir-name ]

 This is used when a node is no longer available in the network, and the
 node registration needs to be removed from a directory service.

1  –  NODE 

 This specifies the identification of the node to be de-registered.

     NODE node-id

 The node identification can be one of:

     The fully specified name for the node in the directory service.
     The Phase IV synonym for the node.
     One of the NET or NSAP addresses for the node.
     The Phase IV address (and optional Phase IV prefix) for the node.

 Wildcards are allowed in names and addresses.

1.1  –  Names 

 The node to be de-registered can be specified using its full name or
 its Phase IV synonym.

 The syntax of a fully specified name depends on the directory service
 being used.  Examples of fully specified names might be:

     For Local:      NODE MailHub
     For DECdns:     NODE MyCo:.Sales.MailHub
     For Phase IV:   NODE MLHUB

 An example of a Phase IV synonym for any of the above might be:

     NODE MLHUB

 Wildcards are allowed in the node name using an asterisk (*).  For
 example:

     For Local:      NODE Mail*
     For DECdns:     NODE MyCo:.Sales.Mail*
     For Phase IV:   NODE ML*

 The wildcard character can come anywhere in the last part of the name.
 Only a single wildcard character is allowed.

1.2  –  Addresses 

 The node to be de-registered can be specified using one of its NETs (or
 NSAPs), or its Phase IV address.

 An NET is an NSAP address value with an N-Sel value of "00" (indicating
 that it is independent of the type of transport service in use on the
 node).  If you specify an NSAP instead of an NET, it is converted to an
 NET before it is used.

   DNA format:  <afi>:<idi>:<predsp>-<locarea>:<nodeid>:00
   OSI format:  <afi><idi>+<predsp><locarea><nodeid>00

 Examples of NETs might be:

   DNA format:  NODE 39:840:0001:AA-00-04-00-05-04:00
   OSI format:  NODE 39840+0001AA000400050400

 If the node has a Phase IV address, that can be used instead of an NET.

   Format:      <area>.<nodeid>
                <area>.<nodeid>+<prefix>

 This is internally converted to an NET, using the Phase IV prefix value.
 The Phase IV prefix value can be specified with the Phase IV address or
 the PHASEIV_PREFIX parameter, or set using the SET DEFAULT command.

 Examples of a Phase IV address might be:

   NODE 1.5                           Uses the default Phase IV prefix
   NODE 1.5+39:840                    Uses an explicit Phase IV prefix
   NODE 1.5 PHASEIV_PREFIX 39:840     Uses an explicit Phase IV prefix

 Wildcards are allowed in the NET or Phase IV address using an asterisk.
 The wildcard character must replace either the node id, or the local
 area and the node id.  For an NET containing a wildcard, do not specify
 an N-Sel value.

   39:840:0001:*   (or 39840+0001*)   Wildcard the node id
   39:840:*        (or 39840+*)       Wildcard the local area and node id

   1.*                                Wildcard the node id
   *.*                                Wildcard the area and node id

2  –  DIRECTORY_SERVICE 

 This specifies the directory service that contains the node registration.

     DIRECTORY_SERVICE dir-service

 The service must be one of:

     DIRECTORY_SERVICE LOCAL
     DIRECTORY_SERVICE DECDNS
     DIRECTORY_SERVICE PHASEIV

 If not specified, the default service type is used.  This default can be
 displayed or changed using the SHOW or SET DEFAULT commands.

3  –  PHASEIV_PREFIX 

 This specifies the AFI, IDI, and preDSP to use when constructing an
 NET from a Phase IV address.  This is used only when a Phase IV address
 is specified for the node id.

   PHASEIV_PREFIX addr-prefix

 An alternate form is to add the Phase IV prefix to the Phase IV address
 specification.

 For example, both:

     NODE 1.5 PHASEIV_PREFIX 39:840:800AB738
     NODE 1.5+39:840:800AB738

 result in the following NET being used to represent the DECnet Phase IV
 address:

     39:840:800AB738-0001:AA-00-04-00-05-04:00

 If not specified, the default Phase IV prefix is used.  This default can
 be displayed or changed using the SHOW or SET DEFAULT commands.

 See the PHASE_IV_PREFIXES topic for details about Phase IV prefix values.

4  –  REVERSE_DIRECTORY 

 This specifies the base directory or name entry to use when deleting
 the reverse address mapping links to the node name (also called the
 back translation links).

     REVERSE_DIRECTORY rev-dir-name

 The links under this directory are used to map NSAP values to their
 respective node names.  These directories are used only for the DECdns
 directory service.

 If not specified, the default reverse directory is used.  This default
 can be displayed or changed using the SHOW or SET DEFAULT commands.

 See the NAMES_AND_DIRECTORIES topic for more information on directories.

5  –  SYNONYM_DIRECTORY 

 This specifies the base directory or name entry to use when deleting
 the synonym mapping link to the node name.

     SYNONYM_DIRECTORY syn-dir-name

 The links under this directory are used to map Phase IV synonyms to
 their respective node names.  These directories are used only for the
 DECdns directory service.

 If not specified, the default synonym directory is used.  This default
 can be displayed or changed using the SHOW or SET DEFAULT commands.

 See the NAMES_AND_DIRECTORIES topic for more information on directories.
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