KTI Networks KGS-1064-HP User Manual page 237

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 provide
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
information. Each of these pieces of information is known as TLV.
TKIP
TKIP is an acronym for Temporal Key Integrity Protocol. It used in WPA to replace WEP with
a new encryption algorithm. TKIP comprises the same encryption engine and RC4 algorithm
defined for WEP. The key used for encryption in TKIP is 128 bits and changes the key used
for each packet.
U
UDP
UDP is an acronym for User Datagram Protocol. It is a communications protocol that uses the
Internet Protocol (IP) to exchange the messages between computers.
UDP is an alternative to the Transmission Control Protocol (TCP) that uses the Internet
Protocol (IP). Unlike TCP, UDP does not provide the service of dividing a message into packet
datagrams, and UDP doesn't provide reassembling and sequencing of the packets. This means
that the application program that uses UDP must be able to make sure that the entire message
has arrived and is in the right order. Network applications that want to save processing time
because they have very small data units to exchange may prefer UDP to TCP.
UDP provides two services not provided by the IP layer. It provides port numbers to help
distinguish different user requests and, optionally, a checksum capability to verify that the data
arrived intact.
Common network applications that use UDP include the Domain Name System (DNS),
streaming media applications such as IPTV, Voice over IP (VoIP), and Trivial File Transfer
Protocol (TFTP).
-237-