The following example demonstrates how to modify a pre-existing LOCAL registration using decnet_register's command line interface: $ define decnet_register_commands 1 $ run sys$system:decnet_register modify node LOCAL:.logic directory_service LOCAL - towers {SC3/NSP/24.6,SC3/TP4/24.6} show node LOCAL:.logic directory_service LOCAL full exit The following example shows how to register a Phase V node in the LOCAL namespace, explicitly specifying session control Version 3 for NSP. If the session version is not specified, NSP towers will still default to SC2, and OSI towers will default to SC3: $ define decnet_register_commands 1 $ run sys$system:decnet_register register node LOCAL:.newno1 directory_service LOCAL - towers {SC3/NSP/24.224,TP4/24.224} synonym newno1 show node LOCAL:.newno1 directory_service LOCAL full exit This example shows how to use decnet_register from an OpenVMS node to register a Phase V node in the WINTER namespace. The node being registered is an OpenVMS node that is configured to run NSP, OSI Transport Class 4, and OSI Transport Class 2 for DECnet over IP: $ define decnet_register_commands 1 $ run sys$system:decnet_register register node WINTER:.xpr.newno1 directory_service DECdns - towers {SC3/NSP/24.224,TP4/24.224,TP2/IP=161.114.94.128} - synonym newno1 show node Winter:.xpr.newno1 directory_service DECdns full exit Note that only decnet_register on OpenVMS accepts IP tower registrations, and those registrations must be made in the DECdns directory service. IP towers cannot be registered in the LOCAL namespace. Furthermore, decnet_register does not handle Domain (Bind) registrations.