Technical data

neighbor
Another router with which implicit or explicit communication is established by a
routing protocol. Neighbors are usually on a shared network, but not always. This
term is mostly used in OSPF and EGP. Usually synonymous with peer.
neighboring routers
Two routers that have interfaces to a common network. On multiaccess networks,
routers are dynamically discovered by OSPF’s HELLO protocol.
network
A group of computer systems that can communicate with each other; can be
composed of computers in a single building (local area networks, or LANs), or
computers thousands of miles apart (wide area networks or WANs). The Internet is
a worldwide collection of computer networks that can intercommunicate.
Any packet-switched network. A network may be specified by its IP address or
network name. The host bits in a network specification must be zero. Default may
be used to specify the default network (0.0.0.0).
The IP address of a network. Usually specified as a dotted quad, with one to four
values in the range of 0 through 255, separated by dots (.); for example, 132.236.199,
132.236, or 10. It can also be specified as a hexadecimal string preceded by 0x
with an even number of digits between 2 and 8; for example, 0x??????, 0x???? or
0x0a. Also allowed is the symbolic value default that has the value 0.0.0.0, the
default network. If options
noresolv
statement is not specified, this can also be
a symbolic network name. For example,
nr-tech-prod
,
cornellu-net
,and
arpanet
. The numeric forms is preferred over the symbolic form.
network address
A unique identifier of a specific system on a network, usually represented as a
number or series of numbers. See also IP address.
network architecture
The specification of a network’s functions and its parts, together with the ways in
which the network is organized; specifies the layers of different functions in the
network, ranging from data transmission at the lowest levels to user applications
at the highest levels.
network byte order
The order in which bytes of information are sent or received by network applications
as opposed to how the bytes are stored in memory by different operating systems
and hardware architectures. The standard network byte order is big endian.
network class
A definition of the type of network addressing scheme being used; high-order bits
in the network number designate the network class of the IP address.
network database
The Compaq TCP/IP Services for OpenVMS database that allows users to refer
to networks by name rather than network number; contains network names, IP
addresses for the networks, and any alias names for the networks.
network delay
The time it takes to get a unit of data from the source of a transmission to the
destination; usually refers to delay from the network and not by system-dependent
application processing delays at source and destination nodes.
A HELLO metric. Valid values are from 0 to 30000, inclusive. The value of 30000
is the maximum metric and means unreachable. See also metric and HELLO.
Glossary–28