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HP DECnet-Plus networking products

HP DECnet-Plus for OpenVMS is an implementation of Phase V of the DIGITAL Network Architecture (DNA) for the OpenVMS Alpha and I64 operating system. HP DECnet-Plus integrates DECnet and Open Systems Interconnection (OSI) network protocols, allowing both stacks to share integrated network functions up to the Transport layer. Upper layers have been implemented as separate towers, allowing existing DECnet and OSI applications to share the integrated Transport layer. Existing DECnet Phase IV and new DECnet and OSI applications are supported by DECnet-Plus. In combination with TCP/IP protocol stacks, OpenVMS systems can participate in multi-vendor, multi-protocol networks adhering to open networking standards.

Features include:

  • Support for OpenVMS LAN failover sets—LAN failover provides a mechanism to protect LAN applications against network interface card (NIC) failures.

    A LAN failover set is defined by the system manager and consists of a set of like adapters (all the same class) that support LAN failover. One adapter in the failover set is used for LAN traffic; one or more other adapters in the set remain idle. If the active adapter fails, one of the idle adapters in the set automatically takes over LAN traffic using the same address as the failed adapter.

  • DECdns Server on I64 systems, Alpha systems, and VAX systems
  • Ability to run DECnet and OSI applications over TCP/IP transports
  • Support for 64-bit addresses, allowing 64-bit network applications to take advantage of the P2 addressing of AlphaServer systems running OpenVMS Alpha version 7.1 or later. Support for 64-bit addressing is limited to the DECnet-Plus $QIO interface
  • Continued support for 32-bit network applications
  • Host-based routing, which includes communication with nodes running DECnet Phase IV, OSI protocols, FDDI large packets, and X.25 switched and permanent virtual circuits
  • FAST configuration option, which allows quick configuration upgrades from Phase IV to Phase V
  • X.25 network management interface, providing efficient wide area network (WAN) management
  • The ability to configure all members of a cluster from any cluster member
  • OSI application programming interfaces (APIs)
  • Expanded naming options, allowing one or more of the following directory naming services—local, DECdns, and/or DNS/BIND (referred to as Domain by DECnet-Plus software). These directory naming services can be searched in any order, as determined during configuration of the product.
  • Routing segregated mode to allow the Routing layer to choose a Phase IV router for those packets having a Phase IV compatible address. (Packets having a Phase V extended address are sent to a Phase V router by default.) This is a configurable option.
  • Reverse path caching to capture path information for later use in reaching remote systems
  • Increased network size, supported through the use of ISO OSI addressing
» HP DECnet-Plus information
» HP DECnet-Plus for OpenVMS Alpha and I64 software product description (SPD)
» HP DECnet-Plus for OpenVMS VAX software product description (SPD)