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Glossary
GL-2
8000-A2-GB26-00
May 1998
Name of the DSL card’s and MCC card’s 10BaseT (Ethernet) interface.
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.
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.
A rule or set of rules applied to a specific interface to indicate whether a packet can be
forwarded or discarded.
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.
The subnet that the end-user system is on.
A computer attached to a network that shares its information and devices with the rest of
the network.
An IP address having a subnet mask of 255.255.255.255.
High-Level Data Link Control. A communications protocol defined by the International
Standards Organization (ISO).
Internet Control Message Protocol. An Internet protocol that allows for the generation of
error messages, test packets, and information messages related to IP.
The worldwide internetwork that predominantly uses the TCP/IP protocol.
A private network or internet using Internet standards and software, but protected from
public access.
Internet Protocol. An open networking protocol used for internet packet delivery.
Internet Protocol Address. The address assigned to an Internet host.
Internet Service Provider. A vendor who provides direct access to the Internet.
Local Area Network. A privately owned and administered data communications network
limited to a small geographic area.
Media Access Control. The lower of the two sublayers of the data link layer, the MAC
sublayer controls access to shared media.
Media Access Control Address. The unique fixed address of a piece of hardware, normally
set at the time of manufacture, and used in LAN protocols.
The additional noise, measured in dB, that would need to be added to the existing noise on
a given DSL loop to bring the Bit Error Rate to IE–7 (10
7
).
Management Communications Controller Card. The DSLAM circuit card used to configure
and monitor the DSLAM.
Management Information Base. A database of managed objects used by SNMP to provide
network management information and device control.
Network Access Provider. The provider of the physical network that permits connection of
service subscribers to NSPs.
Next Hop Router. The next router IP address to any given destination.
e1a
Ethernet
Ethernet address
filter
FTP
gateway address
host
host routes
HDLC
ICMP
Internet
intranet
IP
IP Address
ISP
LAN
MAC
MAC Address
margin (DSL)
MCC Card
MIB
NAP
NHR