G
LOSSARY
Glossary-8
Quality of Service (QoS)
QoS refers to the capability of a network to provide better service to
selected traffic flows using features such as data prioritization, queuing,
congestion avoidance and traffic shaping. These features effectively
provide preferential treatment to specific flows either by raising the
priority of one flow or limiting the priority of another flow.
Remote Authentication Dial-in User Service (RADIUS)
RADIUS is a logon authentication protocol that uses software running on
a central server to control access to RADIUS-compliant devices on the
network.
Remote Monitoring (RMON)
RMON provides comprehensive network monitoring capabilities. It
eliminates the polling required in standard SNMP, and can set alarms on a
variety of traffic conditions, including specific error types.
Rapid Spanning Tree Protocol (RSTP)
RSTP reduces the convergence time for network topology changes to
about 10% of that required by the older IEEE 802.1D STP standard.
Routing Information Protocol (RIP)
The RIP protocol seeks to find the shortest route to another device by
minimizing the distance-vector, or hop count, which serves as a rough
estimate of transmission cost. RIP-2 is a compatible upgrade to RIP. It
adds useful capabilities for subnet routing, authentication, and multicast
transmissions.
Secure Shell (SSH)
A secure replacement for remote access functions, including Telnet. SSH
can authenticate users with a cryptographic key, and encrypt data
connections between management clients and the switch.
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