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Topology is a term that is
used to describe the overall configuration of the
Net8 distributed databases, including all clients
and Oracle servers. In large topologies it is not
uncommon to find different communications protocols,
as the network spans between operating environments
such a DEC, mainframes and Novell.
The protocol is the software
layer that resides on top of the topology. In
theory, and of the following protocols can run under
any topology. Due to the overwhelming use of the
UNIX operating system the most popular protocol has
become TCP/IP, but Oracle supports some of the more
obscure protocols as well.
DNA (DecNet)- DEC's
Distributed Networking Architecture.
Announced in 1975 by
DEC for use in the VMS operating system.
TCP/IP - Transmission
Control Protocol / Internet Protocol
TCP - a standard
protocol that allows a process on one machine to
send a stream of data to another machine.
IP - A standard
protocol that provides a packet delivery service
across a network.
SNA - IBM's System Network
Architecture
Announced in 1974.
SNA is a standard protocol and the most commonly
used protocol.
X.25 - Developed by Bell
Canada.
The basis for ISDN and the
OSI model for open systems.
Again, while Net8 has the
ability to support cross-protocol communications,
the vast majority of Net8 implementations utilize
TCP/IP. |
