Supermicro SSE-G2252 User Manual page 7

Glossary Term
QinQ
QoS
RADIUS
RMON
RSTP
SMTP
SNMP
SNTP
SSH
STA
TACACS+
TCP/IP
Telnet
TFTP
UDP
Description
QinQ tunneling is designed for service providers carrying traffic for multiple
customers across their networks. It is used to maintain customer-specific
VLAN and Layer 2 protocol configurations even when different customers
use the same internal VLAN IDs.
Quality of Service. 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 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 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 reduces the convergence time for
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
protocol that operates over TCP, port 25.
Simple Network Management Protocol. The application protocol in the
Internet suite of protocols which offers network management services.
Simple Network Time Protocol allows a device to set its internal clock
based on 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 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
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.
Terminal Access Controller Access Control System Plus. TA
logon authentication protocol that uses software running on a central
server to control access to TACACS-compliant devices on the network.
Transmission Control Protocol/Internet Protocol. Protocol suite that
includes TCP as the primary transport protocol, and IP as the network
layer protocol.
Defines a remote communication facility for interfacing to a terminal device
over TCP/IP.
Trivial File Transfer Protocol. A TCP/IP protocol commonly used for
software downloads.
User Datagram Protocol. UD
packet-switched communications. It uses IP as the underlying transport
mechanism to provide access to IP-like services. UDP packets are
delivered just like IP packets – connection-less datagrams that may be
discarded before reaching their targets. UDP is useful when TCP would be
too complex, too slow, or just unnecessary.
vii
P
provides a datagram mode for
Preface
CACS+
is a