7000 Series L3 Managed Switch Reference Manual for Software v1.0
Glossary
C-17
May 30, 2003 Beta Draft
A number that explains which part of an IP address comprises the network address and which part is the host
address on that network. It can be expressed in dotted-decimal notation or as a number appended to the IP
address. For example, a 28-bit mask starting from the MSB can be shown as 255.255.255.192 or as /28
appended to the IP address.
Network Address Translation
Sometimes referred to as Transparent Proxying, IP Address Overloading, or IP Masquerading. Involves use
of a device called a Network Address Translator, which assigns a contrived, or logical, IP address and port
number to each node on an organization's internal network and passes packets using these assigned
addresses.
NM
Network Module.
nm
Nanometer (1 x 10e
9
) meters.
non-stub area
Resource-intensive OSPF area that carries a default route, static routes, intra-area routes, interarea routes,
and external routes. Non-stub areas are the only OSPF areas that can have virtual links configured across
them, and are the only areas that can contain an ASBR. Compare with stub area. See also ASAM and OSPF.
(Cisco Systems Inc.)
NP
Network Processor.
O
Open Shortest Path First
A link- state (algorithm used by the router to determine the current topology of a network), Interior Gateway
(distributes routing information between routers belonging to a single Autonomous System) routing
protocol. This protocol's algorithm determines the shortest path from its router to all the other routers in the
network. This protocol is rapidly replacing RIP on the Internet.
Open Systems Interconnection
OSI is a seven (7) layer architecture model for communications systems developed by the ISO for the
interconnection of data communications systems. Each layer uses and builds on the services provided by
those below it.
Operating System Application Programming Interface
OSAPI is a module within the System Support software that provides a set of interfaces to OS support
functions.
Summary of Contents for ProSafe GSM7324
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