Glossary
GL-23
Cisco 6260 Hardware Installation Guide
OL-2365-02
R
RADIUS
Remote Authentication Dial-In User Service. A client/server security protocol created by Livingston
Enterprises. Security information is stored in a central location, known as the RADIUS server.
RADSL
rate adaptive digital subscriber line. A transmission technology that supports adaptive transmission
rates through the use of intelligent DSL modems, which negotiate the line rate according to line
conditions and profile specifications. Once the line rate is negotiated, the rate is locked when the line
trains. RADSL supports both asymmetric and symmetric applications on a single twisted pair
telephone line. See
ADSL
.
RAM
random-access memory. Volatile memory that can be read and written by a microprocessor.
random-access
memory
See
RAM
.
Rate Adaptive
Digital Subscriber
Line
See
RADSL
.
read-only memory
See
ROM
.
redundancy
In internetworking, the duplication of devices, services, or connections so that, in the event of failure,
the redundant devices, services, or connections can perform the work of those that failed.
remote address
The IP address of a remote server.
Remote
Authentication
Dial-In User Service
See
RADIUS
.
remote monitoring
See
RMON
.
remote server
A network computer that allows a user to log on to the network from a distant location.
Request for
Comments
See
RFC
.
RFC
Request for Comments. The document series, begun in 1969, which describes the Internet suite of
protocols and related experiments. Not all RFCs describe Internet standards, but all Internet standards
are written up as RFCs.
ring topology
A method of connecting devices so that a series of repeaters is connected to one another by
unidirectional transmission links to form a single closed loop. Each station on the network connects
to the network at a repeater. Compare with
bus topology
,
daisy-chain topology
,
star topology
, and
tree
topology
.
RMON
remote monitoring. MIB agent specification described in RFC 1271 that defines functions for the
remote monitoring of networked devices. The RMON specification provides numerous monitoring,
problem detection, and reporting capabilities.
ROM
read-only memory. Nonvolatile memory that can be read, but not written, by the microprocessor.