The DECnet over TCP/IP feature extends the DECnet Phase V
architecture to coexist and communicate with TCP/IP networks. This
feature requires a valid DECnet license and a licensed and installed
TCP/IP product that supports the PATHWORKS Internet Protocol (PWIP)
interface.
You should consider enabling DECnet over TCP/IP for the following
purposes:
Transition from DECnet to TCP/IP.
To move to TCP/IP-based networks gradually based on business need. DECnet
over TCP/IP functionality is designed to be transparent to users.
Coexistence. To run DECnet or OSI applications,
or both, in a TCP/IP-based network.
With DECnet over TCP/IP, you can:
Expand your DECnet network to communicate
over TCP/IP network backbones. DECnet over TCP/IP allows combinations
of naming services (DECdns, large LOCAL file, and DNS/BIND).
Expand the network by joining two existing DECnet
networks without the need to renumber the nodes.
Use IP-only traffic in part or all of the backbone.
With DECnet over TCP/IP, DECnet or OSI applications can run over
the lower levels of the TCP/IP protocol stack and the IP network
backbone.
Enable the feature on a node-to-node basis or throughout
the entire network.
The DECnet over TCP/IP functionality uses TCP/IP to form a
logical link between DECnet nodes. It uses the PATHWORKS IP Driver
to interface with TCP. DECnet applications run transparently between
DECnet nodes connected by TCP/IP. Users on those DECnet nodes can
connect to each other using DECnet node synonyms or IP fullnames.
For example:
$ SET HOST SYSABC
$ SET HOST SYSABC.boston.acme.com
$ SET HOST 16.12.42.19
To enable DECnet over TCP/IP on your system, you must do the
following primary tasks:
Install and configure DECnet-Plus
on the system. When you run the NET$CONFIGURE procedure, specify the Domain
directory service (for TCP/IP addresses) as well as the Local or
DNS/BIND service when prompted by the configuration procedure.
Install and configure TCP/IP Services on the system. When you run the TCPIP$CONFIG configuration procedure, enable
the PWIP driver to form a bridge between DECnet-Plus and TCP/IP
Services software. The PWIP driver is listed as Option 1 on the Optional
Components menu.
For detailed information about enabling and using DECnet over
TCP/IP, refer to the DECnet-Plus for OpenVMS Applications Installation and Advanced Configuration and DECnet-Plus for OpenVMS Network Management manuals.