Instruction Manual

99
GigaX3112 Series Layer 3 Managed Switch
FTP
File Transfer Protocol
A program used to transfer files between computers
connected to the Internet. Common uses include
uploading new or updated files to a web server, and
downloading files from a web server.
host
A device (usually a computer) connected to a network.
HTTP
Hyper-Text Transfer Protocol
HTTP is the main protocol used to transfer data from web
sites so that it can be displayed by web browsers. See
also web browser, web site.
ICMP
Internet Control Message Protocol
An Internet protocol used to report errors and other
network-related information. The ping command makes
use of ICMP.
IGMP
Internet Group Management Protocol
An Internet protocol that enables a computer to share
information about its membership in multicast groups
with adjacent routers. A multicast group of computers is
one whose members have designated as interested in
receiving specific content from the others. Multicasting
to an IGMP group can be used to simultaneously update
the address books of a group of mobile computer users
or to send company newsletters to a distribution list.
IGMP Snooping
Snoop the IGMP packets on each port and associate the
port with a layer 2 muticast group.
Internet
The global collection of interconnected networks used for
both private and business communications.
intranet
A private, company-internal network that looks like part
of the Internet (users access information using web
browsers), but is accessible only by employees.
IP
See TCP/IP.
IP address
Internet Protocol address
The address of a host (computer) on the Internet,
consisting of four numbers, each from 0 to 255, separated
by periods, e.g., 209.191.4.240. An IP address consists
of a network ID that identifies the particular network
the host belongs to, and a host ID uniquely identifying
the host itself on that network. A network mask is used
to define the network ID and the host ID. Because IP
addresses are difficult to remember, they usually have an
associated domain name that can be specified instead.
See also domain name, network mask.