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GigaX3112 Series Layer 3 Managed Switch
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Glossary
10BASE-T
A designation for the type of wiring used by Ethernet
networks with a data rate of 10 Mbps. Also known as
Category 3 (CAT 3) wiring. See also data rate, Ethernet.
100BASE-T
A designation for the type of wiring used by Ethernet
networks with a data rate of 100 Mbps. Also known as
Category 5 (CAT 5) wiring. See also data rate, Ethernet.
1000BASE-T
A designation for the type of wiring used by Ethernet
networks with a data rate of 1000 Mbps.
binary
The “base two” system of numbers, that uses only two
digits, 0 and 1, to represent all numbers. In binary,
the number 1 is written as 1, 2 as 10, 3 as 11, 4 as
100, etc. Although expressed as decimal numbers for
convenience, IP addresses in actual use are binary
numbers; e.g., the IP address 209.191.4.240 is 1101000
1.10111111.00000100.11110000 in binary. See also bit, IP
address, network mask.
bit
Short for “binary digit,” a bit is a number that can have
two values, 0 or 1. See also binary.
bps
bits per second
CoS
Class of Service. Defined in 802.1Q, the value range is
from 0 to 7.
broadcast
To send data to all computers on a network.
download
To transfer data in the downstream direction, i.e., from
the Internet to the user.
Ethernet
The most commonly installed computer network
technology, usually using twisted pair wiring. Ethernet
data rates are 10 Mbps and 100 Mbps. See also
10BASE-T, 100BASE-T, twisted pair.
filtering
To screen out selected types of data, based on filtering
rules. Filtering can be applied in one direction (ingress or
egress), or in both directions.
filtering rule
A rule that specifies what kinds of data the a routing
device will accept and/or reject. Filtering rules are defined
to operate on an interface (or multiple interfaces) and in a
particular direction (upstream, downstream, or both).
