Specifications

Niagara Release 2.3
Niagara Networking & Connectivity Guide
GL-10
Glossary
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static IP address An IP address that is manually assigned to a host, and rarely changes. Typically,
when the IP address is statically assigned, other network settings (such as network
mask and default gateway) are also statically assigned. See dynamic IP address.
Standard Output window An Admin Tool option providing a special window to view and save a running
station’s activity. Standard Output displays JVM station requests and responses in
real time, including station startup messages. It is typically used for troubleshooting.
stateful inspection This firewall security technique is also known as “dynamic packet filtering”. It tracks
a transaction in order to verify that the destination of an inbound packet matches the
source of a previous outbound request. In doing so, it opens the packet and examines
it for legitimacy.
station The JVM that hosts the running of objects, plus a station database containing all
object configuration. Provides the environment to configure, manage, and run a
single database of objects and the services required to support a control application.
subnet mask See network mask.
supervisor or supervisor
station
You can organize Niagara stations into hierarchies by defining a Niagara station to
be the peer, subordinate, or supervisor of other stations. Relationships can provide
convenience in configuring and managing stations. For instance, you can choose to
“Backup Subordinates” and all stations defined as subordinate to the issuing station
will be backed up.
T
TCP/IP Transmission Control Protocol/Internet Protocol is the suite of communications
protocols used to connect hosts on the Internet. The two main protocols included are
TCP and IP. TCP/IP originated with UNIX, but now most operating systems support
TCP/IP as a networking standard.
terminal emulation A program to access a server as if you were sitting at the server console.
time synchronization With time synchronization, one host can receive updates to its system time from
another host. A Niagara host can function as both a time synchronization client and
a time synchronization server. Niagara hosts can also use Internet time
synchronization servers for system time updates.
tree view The portion of the WorkPlace Pro window that shows the hierarchical structure of the
station database. Tree view operates much like Windows Explorer, where you expand
container (parent) nodes to see subordinate child nodes.