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Quality of Service. QoS refers to the capability of a network to provide
Q
S
O
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. RA
RADIUS
authentication protocol that uses software running on a central server to
control access to RADIUS-compliant devices on the network.
Routing Information Protocol seeks to find the shortest route to another
RIP
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.
Remote Monitoring. RMON provides comprehensive network monitoring
RMON
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 reduces the convergence time for
RSTP
network topology changes to about 10% of that required by the older IEEE
802.1D STP standard.
Simple Mail Transfer Protocol is a standard host-to-host mail transport
SMTP
protocol that operates over TCP, port 25.
Simple Network Management Protocol. The application protocol in the
SNMP
Internet suite of protocols which offers network management services.
SNTP
Simple Network Time Protocol
periodic updates from a Network Time Protocol (NTP) server. Updates can
be requested from a specific NTP server, or can be received via broadcasts
sent by NTP servers.
Secure Shell is a secure replacement for remote access functions, including
SSH
Telnet. SSH can authenticate users with a cryptographic key, and encrypt
data connections between management clients and the switch.
Spanning Tree Algorithm is a technology that checks your network for any
STA
loops. A loop can often occur in complicated or backup linked network
systems. Spanning Tree detects and directs data along the shortest
available path, maximizing the performance and efficiency of the network.
allows a device to set its internal clock based on
– 1993 –
G
LOSSARY
is a logon
DIUS
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