3Com 3CRUS2475 User Manual page 327

326 A : G
PPENDIX LOSSARY
Routing Information
Protocol (RIP)
Simple Mail Transfer
Protocol (SMTP)
Simple Network
Management
Protocol (SNMP)
Simple Network Time
Protocol (SNTP)
Spanning Tree
Protocol (STP)
Telnet
Protocol-Independent
Multicasting (PIM)
Terminal Access
Controller Access
Control System Plus
(TACACS+)
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.
A standard host-to-host mail transport protocol that operates over TCP,
port 25.
The application protocol in the Internet suite of protocols which offers
network management services.
allows a device to set its internal clock based on periodic updates
SNTP
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.
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.
Defines a remote communication facility for interfacing to a terminal
device over TCP/IP.
This multicast routing protocol floods multicast traffic downstream, and
calculates the shortest-path back to the multicast source network via
reverse path forwarding. PIM uses the router's IP routing table rather
than maintaining a separate multicast routing table as with DVMRP.
PIM - Sparse Mode is designed for networks where the probability of a
multicast client is low, such as on a Wide Area Network. PIM - Dense
Mode is designed for networks where the probability of a multicast
client is high and frequent flooding of multicast traffic can be justified.
is a logon authentication protocol that uses software running
TACACS+
on a central server to control access to TACACS-compliant devices on
the network.
Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that includes TCP as the primary transport protocol, and
IP as the network layer protocol.