SECTION 5
GLOSSARY
5-2 SECTION
5,
GLOSSARY
CPE
Customer Premise Equipment: typically computers, printers, etc,
that are connected to the gateway at the subscriber location. CPE
can be provided by the subscriber or the cable service provider.
Also called a client.
Crossover Cable
A crossover cable is a cable that is used to interconnect two
computers by "crossing over" (reversing) their respective pin
contacts. A crossover cable is sometimes known as a null
modem.
D
Default Gateway
A routing device that forwards traffic not destined to a station
within the local subnet.
DHCP
A Dynamic Host Configuration Protocol server dynamically
assigns IP addresses to client hosts on an IP network. DHCP
eliminates the need to manually assign static IP addresses by
“leasing” an IP address and subnet mask to each client. It
enables the automatic reuse of unused IP addresses:
The BR700 is simultaneously a DHCP client and a DHCP server.
!
A DHCP server at the system headend assigns a public IP
address to the BR700.
!
The BR700 contains a built-in DHCP server that assigns
private IP addresses to clients.
DMZ
D
e
M
ilitarized
Z
one. This service opens one IP address to the
Internet, usually for online gaming, and acts as a buffer between
the Internet your network.
DNS
The Domain Name System is the Internet system for converting
domain names (like
www.motorola.com
) to IP addresses. A DNS
server contains a table matching domain names such as
www.motorola.com
to IP addresses such as 192.169.9.1. When
you access the world-wide web, a DNS server translates the URL
displayed on the browser to the destination website IP address.
The DNS lookup table is a distributed Internet database; no one
DNS server lists all domain name to IP address matches.
Domain Name
A unique name, such as motorola.com, that maps to an IP
address. Domain names are typically much easier to remember
than are IP addresses. See
DNS.
