KTI Networks KGS-2421, User Manual

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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 Telnet session, the client user must log in to a server by entering a valid
username and password. Then, the client user can enter commands through the Telnet program
just as if they were entering commands directly on the server console.
TFTP
TFTP is an acronym for Trivial File Transfer Protocol. It is transfer protocol that uses the User
Datagram Protocol ( UDP ) and provides file writing and reading, but it does not provides
directory service and security features.
ToS
ToS is an acronym for Type of Service. It is implemented as the IPv4 ToS priority control. It is
fully decoded to determine the priority from the 6-bit ToS field in the IP header. The most
significant 6 bits of the ToS field are fully decoded into 64 possibilities, and the singular code
that results is compared against the corresponding bit in the IPv4 ToS priority control bit
(0~63).
TLV
TLV is an acronym for Type Length Value. A LLDP frame can contain multiple pieces of