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Chapter 6: Glossary
Broadband
:
A type of data transmission in which a single medium (such as cable) carries
several channels of data at once.
Cable Modem (CM)
:
The term "Cable Modem" is quite new and refers to a modem that
operates over the ordinary cable TV network cables. Basically you just connect the Cable
Modem to the TV outlet for your cable TV, and the cable TV operator connects a Cable
Modem Termination System (CMTS) in his end (the Head-End).
CATV
:
Community Antenna Television or Cable TV system. It can be coaxial or HFC
(Hybrid Fiber Coax) based.
CMTS
:
Cable Modem Termination System. It means central device for connecting the
cable TV network to a data network like the Internet. Normally it placed in the head-end of
the cable TV system.
DDNS
: DDNS is a service let the dynamic IP switch to the static. The settings of DDNS
can solve the problem of giving the different IP at a time. After setting the router, the
hostname will match the dynamic IP.
Default Gateway (Router)
:
Every non-router IP device needs to configure a default
gateway
’
s IP address. When the device sends out an IP packet, if the destination is not on
the same network, the device has to send the packet to its default gateway, which will then
send it out towards the destination.
Device name
:
Also known as DHCP client ID or network name. Sometimes it
’
s provided
by an ISP when it uses DHCP to assign addresses.
DHCP (Dynamic Host Configuration Protocol)
:
Dynamic Host Configuration Protocol.
This protocol provides a mechanism for allocating IP addresses dynamically so that
addresses can be reused. Often used for managing the IP addresses of all the cable
modems in a cable plant and the PC's connected to the cable modems.
DHCP Server (Dynamic Host Configuration Protocol Server)
:
A DHCP server is a
computer that is responsible for assigning IP addresses to the computers on a LAN.
DNS Server Address (Domain Name System)
:
DNS stands for Domain Name System,
which allows Internet servers to have a domain name (such as
)
and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a database of
Internet servers and their respective domain
“
Broadbandrouter.com
”
into your Internet
browser), the user is sent to the proper IP address. The DNS server IP address used by