Hirschmann RS20 Reference Manual page 208

Glossary
C
cards.h. A file that instructs the
base code driver how to construct
the driver.
card_db. A database that contains
everything from port maps to module
information.
Checksum. A simple error-
detection scheme in which each
transmitted message is identified
with a numerical value based on the
number of set bits in the message.
The receiving station then applies a
formula to the message and checks
to make sure the accompanying
numerical value is the same. If not,
the receiver can assume that the
message has been corrupted.
CLI. See "Command Line Interface"
on page 208.
Command Line Interface. CLI is a
line-item interface for configuring
systems. (In the case of
Hirschmann, it is one of the user
interfaces they have programmed
for allowing programmers to
configure their system).
Common Open Policy Service
Protocol. A proposed standard
protocol for exchanging network
policy information between a Policy
Decision Point (PDP) in a network
and Policy Enforcement Points
(PEPs) as part of overall Quality of
Service (QoS) - the allocation of
network traffic resources according
CLI L2B
Release 4.0 11/07
to desired priorities of service. The
policy decision point might be a
network server controlled directly by
the network administrator who
enters policy statements about
which kinds of traffic (voice, bulk
data, video, teleconferencing, and
so forth) should get the highest
priority. The policy enforcement
points might be router or layer 3
switches that implement the policy
choices as traffic moves through the
network. Currently, COPS is
designed for use with the Resource
Reservation Protocol (RSVP), which
lets you allocate traffic priorities in
advance for temporary high-
bandwidth requirements (for
example, video broadcasts or
multicasts). It is possible that COPS
will be extended to be a general
policy communications protocol.
Complex Programmable Logic
Device. CPLD is a programmable
circuit on which a logic network can
be programmed after its
construction.
COPS. See "Common Open Policy
Service Protocol." on page 208.
CPLD. See "Complex
Programmable Logic Device." on
page 208.
D
DAPI. See "Device Application
Programming Interface" on
page 209.
208