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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)
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