Manual

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GigaX2008EX L2 Managed Switch User Manual
bundled with higher-level applications such as HTTP, FTP,
Telnet, etc., TCP/IP refers to this whole suite of protocols.
Telnet/SSH
An interactive, character-based program used to access a
remote computer. While HTTP (the web protocol) and FTP
only allow you to download files from a remote computer,
Telnet / SSH allows you to log into and use a computer from
a remote location.
TFTP
Trivial File Transfer Protocol
A protocol for file transfers, TFTP is easier to use than File
Transfer Protocol (FTP) but not as capable or secure.
Trunk
Two or more ports are combined as one virtual port, also
called as Link Aggregation.
TTL
Time To Live
A field in an IP packet that limits the life span of that packet.
Originally meant as a time duration, the TTL is usually
represented instead as a maximum hop count; each router
that receives a packet decrements this field by one. When
the TTL reaches zero, the packet is discarded.
twisted pair
The ordinary copper telephone wiring long used by telephone
companies. It contains one or more wire pairs twisted
together to reduce inductance and noise. Each telephone line
uses one pair. In homes, it is most often installed with two
pairs. For Ethernet LANs, a higher grade called Category 3
(CAT 3) is used for 10BASE-T networks, and an even higher
grade called Category 5 (CAT 5) is used for 100BASE-T
networks. See also 10BASE-T, 100BASE-T, Ethernet.
upstream
The direction of data transmission from the user to the
Internet.
VLAN
Virtual Local Area Network
WAN
Wide Area Network
Any network spread over a large geographical area, such as
a country or continent. With respect to the SL-1000, WAN
refers to the Internet.
Web browser
A software program that uses Hyper-Text Transfer Protocol
(HTTP) to download information from (and upload to) web
sites, and displays the information, which may consist of text,
graphic images, audio, or video, to the user. Web browsers
use Hyper-Text Transfer Protocol (HTTP). Popular web