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Glossary
Glossary-23
neighbor
(1) In OSPF, two routers that have interfaces to a common network are neighbors. On
multiaccess networks, neighbors are dynamically discovered by the OSPF Hello protocol.
(2) In Multichassis PPP, PortMasters in the same Multichassis PPP domain.
netmask
A 32-bit number that distinguishes the portion of an IP address referring to the network
or subnet from the portion referring to the host. Compare subnet mask.
netmask length
A number between 0 and 32 preceded by a slash (/) and following an IP address prefix.
The netmask length indicates the number of high-order bits in the prefix that an IP
address must match to fall within the range indicated by the prefix. For example, the
prefix and netmask length 128.0.0.0/8 describe all networks whose IP addresses begin
with 128. See also IP address prefix.
network
A collection of computers, terminals, and other devices and the hardware and software
that enable them to exchange data and share resources over short or long distances.
network handle
A number assigned to an active socket that can be used to close the socket manually,
rather than by a request from the client.
network interface card
See NIC.
Network Information Service
See NIS.
network layer reachability information
See NLRI.
network management
In the Open System Interconnection (OSI) model, the five functional application areas of
accounting management, configuration management, fault management, performance
management, and security management.