Owner's Manual

Appendix E. Glossary | 939
NETGEAR 8800 User Manual
Q
QoS Quality of Service. Policy-enabled QoS is a network service that provides the
ability to prioritize different types of traffic and to manage bandwidth over a
network. QoS uses various methods to prioritize traffic, including IEEE 802.1p
values and IP DiffServ values.
R
RADIUS Remote Authentication Dial In User Service. RADIUS is a client/server protocol
and software that enables remote access servers to communicate with a central
server to authenticate dial-in users and authorize their access to the requested
system or service. RADIUS allows a company to maintain user profiles in a
central database that all remote servers can share. It provides better security,
allowing a company to set up a policy that can be applied at a single
administered network point. With RADIUS, you can track usage for billing and
for keeping network statistics.
RARP Reverse ARP. Using this protocol, a physical device requests to learn its IP
address from a gateway server's ARP table. When a new device is set up, its
RARP client program requests its IP address from the RARP server on the
router. Assuming that an entry has been set up in the router table, the RARP
server will return the IP address to the machine which can store it for future use.
RFC Request for Comment. The IETF RFCs describe the definitions and parameters
for networking.
RIP Routing Information Protocol. This IGP vector-distance routing protocol is part of
the TCP/IP suite and maintains tables of all known destinations and the number
of hops required to reach each. Using RIP, routers periodically exchange entire
routing tables. RIP is suitable for use only as an IGP.
RIPng RIP next generation. RIPng is one of the routing protocols used with IPV6 and is
similar to RIP.
RMON Remote monitoring. RMON is a standardized method to make switch and router
information available to remote monitoring applications. It is an SNMP network
management protocol that allows network information to be gathered remotely.
RMON collects statistics and enables a management station to monitor network
devices from a central location. It provides multivendor interoperability between
monitoring devices and management stations. RMON is described in several
RFCs (among them IETF RFC 1757 and RFC 2201). Network administrators
use RMON to monitor, analyze, and troubleshoot the network. A software agent
can gather the information for presentation to the network administrator with a
graphical user interface (GUI). The administrator can find out how much
bandwidth each user is using and what Web sites are being accessed; you can
also set alarms to be informed of potential network problems.
root bridge In STP, the root bridge is the bridge with the best bridge identifier selected to be
the root bridge. The network has only one root bridge. The root bridge is the only
bridge in the network that does not have a root port.