Paradyne 8510 RADSL Default route, Dhcp Relay Agent, Dhcp Server, Domain, Downstream, DSL card

Glossary

CPU	Central Processing Unit. The main or only computing device in a data processing system.
CRC	Cyclic Redundancy Check. A mathematical method of confirming the integrity of received
	digital data.
default route	The address used for routing packets whose destination is not in the routing table. In
	Routing Information Protocol (RIP), this is IP address 0.0.0.0.
DHCP	Dynamic Host Configuration Protocol. A Microsoft protocol for dynamically allocating IP
	addresses.
DHCP Relay Agent	A system that detects and forwards DHCP discover or request messages to the
	appropriate DHCP server.
DHCP Server	A server which uses DHCP to allocate network addresses and deliver configuration
	parameters to dynamically configured hosts.
domain	A named group of machines on a network. In IP, a domain consists of a block of IP
	addresses with similar prefixes.
downstream	In the direction of the customer premises.
DSL	Digital Subscriber Line. DSL is a copper loop transmission technology enabling high-speed
	access in the local loop.
DSL card	Digital Subscriber Line Card. The primary card in the Hotwire DSLAM system. It has one
	Ethernet port and four DSL ports.
DSLAM	Digital Subscriber Line Access Multiplexer. DSLAM provides simultaneous high-speed
	digital data access and analog POTS over the same twisted-pair telephone line.
DSU/CSU	Data Service Unit/Channel Service Unit. A device that combines the functions of a DSU
	and a CSU. It connects Data Terminal Equipment to the digital network, protects the line
	from damage, and regenerates the signal.
e1a	Name of the DSL card's and MCC card's 10BaseT (Ethernet) interface.
Enterprise MIB	MIB objects unique to a specific company's devices.
Ethernet	A type of network that supports high-speed communication among systems. It is a
	widely-implemented standard for LANs. All hosts are connected to a coaxial cable where
	they contend for network access using a Carrier Sense, Multiple Access with Collision
	Detection (CSMA/CD) paradigm.
Ethernet address	A six-part hexadecimal number in which a colon separates each part (for example,
	8:0:20:1:2f:0). This number identifies the Ethernet communications board installed in a PC
	and is used to identify the PC as a member of the network.
filter	A rule or set of rules applied to a specific interface to indicate whether a packet can be
	forwarded or discarded.
firmware	Software that has been temporarily or permanently loaded into read-only memory.
FTP	File Transfer Protocol. A TCP/IP standard protocol that allows a user on one host to
	access and transfer files to and from another host over a network, provided that the client
	supplies a login identifier and password to the server.
full-duplex	The capability to transmit in two directions simultaneously.
gateway address	The subnet that the end-user system is on.
half-duplex	The capability to transmit in two directions, but not simultaneously.
HDLC	High-Level Data Link Control. A communications protocol defined by the International
	Standards Organization (ISO).

GL-2 January 1999 8000-A2-GB26-10