PCI Token Ring Administrator's Guide

Glossary
Topology:
Glossary 135
Network Management Identifier
(NMID): A unique ID assigned by the
system for the network management of each
network interface.
Node: Any point in a network where
services are provided or communications
channels are interconnected. A node could be
a workstation or a server processor.
Packet: A sequence of binary digits that is
transmitted as a unit ina computer network.
A packet usually contains control
information plus data.
Protocol: A specification for coding
messages exchanged between two
communications processes.
Remote: Not directly connected or
processed at another location.
Ring Speed: For Token Ring it is user
selectable and can be set to 4000000 or
16000000 bits per second.
Station: Short for workstation, computer, or
terminal that provides computational
services and is attached to a local area
network. Also called a node.
Subnetwork: Small discrete physical
networks connected via gateways which
share the same network addressspace.Refer
to the Installing and Administering
LAN/9000 Software manual for detailed
information about subnetworks and subnet
addressing.
Subnet mask: A 32-bit mask which, when
AND'd with an internet address, determines
a subnetwork address. When the internet
address is AND'd with the subnet mask, the
ones in the host portion of the subnet mask
will “overwrite'' the corresponding bits of the
host portion of the internet address,
resulting in the subnet address. Refer to the
Installing and Administering LAN/9000
Software manual for detailed information
about subnet masks.
System Administrator: The person who
oversees network maintenance/operation.
Trunk Access Unit (TAU): A central hub
is used to connect to a token ring network.
Token: A small bit pattern that circulates
around a network. Ownership of the token
enables a node to transmit over the network
medium.
Token Ring An IEEE 802.5 network. See
IEEE.
Topology: The physical and logical
geometry governing placement of nodes in a
computer network. Also, the layout of the
transmission medium for a network.