3Com 2924-PWR manual Authentication, Terminal Access, Controller Access

242APPENDIX F: GLOSSARY

Remote	RADIUS is a logon authentication protocol that uses software running
Authentication	on a central server to control access to RADIUS-compliant devices on
Dial-in User Service	the network.
(RADIUS)
Remote Monitoring	RMON provides comprehensive network monitoring capabilities. It
(RMON)	eliminates the polling required in standard SNMP, and can set alarms on
	a variety of traffic conditions, including specific error types.
Rapid Spanning Tree	RSTP reduces the convergence time for network topology changes to
Protocol (RSTP)	about 10% of that required by the older IEEE 802.1D STP standard.
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.
Routing Information	The RIP protocol seeks to find the shortest route to another device by
Protocol (RIP)	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.
Simple Network	The application protocol in the Internet suite of protocols which offers
Management	network management services.
Protocol (SNMP)
Spanning Tree	A technology that checks your network for any loops. A loop can often
Protocol (STP)	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	TACACS+ is a logon authentication protocol that uses software running
Controller Access	on a central server to control access to TACACS-compliant devices on
Control System Plus	the network.
(TACACS+)	Transmission Control Protocol/Internet Protocol (TCP/IP)
	Protocol suite that includes TCP as the primary transport protocol, and
	IP as the network layer protocol.
Trivial File Transfer	A TCP/IP protocol commonly used for software downloads.
Protocol (TFTP)
User Datagram	UDP provides a datagram mode for packet-switched communications. It
Protocol (UDP)	uses IP as the underlying transport mechanism to provide access to