User's Manual

User’s Manual of SGS-5240 Series Managed Switch
301
SPROUT
Stack Protocol using ROUting Technology. An advanced protocol for almost instantaneous discovery of topology
changes within a stack as well as election of a master switch. SPROUT also calculates parameters for setting up each
switch to perform shortest path forwarding within the stack.
SSID
Service Set Identifier is a name used to identify the particular 802.11 wireless LANs to which a user wants to attach. A
client device will receive broadcast messages from all access points within range advertising their SSIDs, and can
choose one to connect to based on pre-configuration, or by displaying a list of SSIDs in range and asking the user to
select one (Wikipedia).
SSH
SSH is an acronym for Secure SHell. It is a network protocol that allows data to be exchanged using a secure channel
between two networked devices. The encryption used by SSH provides confidentiality and integrity of data over an
insecure network. The goal of SSH was to replace the earlier login, telnet and rsh protocols, which did not provide
strong authentication or guarantee confidentiality (Wikipedia).
SSM
SSM In SyncE this is an abbreviation for Synchronization Status Message and is containing a QL indication.
STP
Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN. The
original STP protocol is now obsolete by RSTP.
SyncE
SyncE Is an abbreviation for Synchronous Ethernet. This functionality is used to make a network 'clock frequency'
synchronized. Not to be confused with real time clock synchronized (IEEE 1588).
T
TACACS+
TACACS+ is an acronym for Terminal Access Controller Access Control System Plus. It is a networking protocol which
provides access control for routers, network access servers and other networked computing devices via one or more
centralized servers. TACACS+ provides separate authentication, authorization and accounting services.
Tag Priority
Tag Priority is a 3-bit field storing the priority level for the 802.1Q frame.
TCP
TCP is an acronym for Transmission Control Protocol. It is a communications protocol that uses the Internet Protocol
(IP) to exchange the messages between computers.
The TCP protocol guarantees reliable and in-order delivery of data from sender to receiver and distinguishes data
for multiple connections by concurrent applications (for example, Web server and e-mail server) running on the
same host.
The applications on networked hosts can use TCP to create connections to one another. It is known as a
connection-oriented protocol, which means that a connection is established and maintained until such time as the
message or messages to be exchanged by the application programs at each end have been exchanged. TCP is
responsible for ensuring that a message is divided into the packets that IP manages and for reassembling the
packets back into the complete message at the other end.
Common network applications that use TCP include the World Wide Web (WWW), e-mail, and File Transfer
Protocol (FTP).
TELNET
TELNET is an acronym for Teletype Network. It is a terminal emulation protocol that uses the Transmission Control
Protocol (TCP) and provides a virtual connection between TELNET server and TELNET client.
TELNET enables the client to control the server and communicate with other servers on the network. To start a