ADC AVIDIA SWD4573I1, User Manual

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Appendix D: Glossary
Avidia System Configuration and Management User Manual 613
IP Address A 32-bit address used in IP routing. The address consists of four octets
separated by decimals. The octets comprise a network section, an
optional subnet section, and a host section.
Line The link between the Avidia system and the WAN. Also, a SONET interface
layer that is responsible for transporting data.
Link A PVC endpoint in a frame relay network.
LLSCNAP (Logical Link
Control Encapsulation) Used in networks in which it is not practical to have a separate virtual
channel for each protocol.
LMI (Local Management
Interface) Defines a method of exchanging status information between the
customer device and the network.
LOF (Loss of Frame) An error indicating that the receiving equipment has lost a frame.
LOP (Loss of Pointer) An error indicating that the receiving equipment has lost a pointer to the
start of the cell in the payload.
LOP-P (Loss of Pointer -
Path) Indicates that a loss of pointer error has occurred in the SONET Path
layer.
LOS (Loss of Signal) An error indicating that the receiving equipment has lost the signal.
MAC Address The hardware address of a device connected to a network.
Margin The noise margin in decibels that the modem must achieve with a BER of
10 to the -7 or better to successfully complete initialization.
Matching length The number of ATM Destination Address Prefix octets you want the
system to consider when determining whether the IISP Static Route Table
entry matches a particular SPVC.
For example, if you select 2, then all SPVCs for which the first two octets
of the destination ATM address prefix match the first two octets of the
IISP Static Route Table entry will be routed according to the information
in that table entry.
MBS (Maximum burst
size) The maximum number of cells that can be transmitted at the peak cell
rate.
Medium A SONET layer that converts electrical signals to optical signals.
MIB (Management
Information Base) A set of variables that define the configuration and status parameters for
network management. Network management stations can retrieve
information from and write information to a MIB. The Internet
Engineering Task Force (IETF) specifies standard MIBs for certain types
of devices, ensuring any NMS can manage the devices. Vendors can
specify proprietary MIBs for their devices to fit specific needs.
nrt-VBR (non-real-time
Variable Bit Rate) A traffic class that carries variable bandwidth. It is well suited for data
services such as frame relay over ATM which requires guaranteed
bandwidth and lower Quality of Service. It is not well suited for LAN traffic
due to the unpredictability of LAN traffic burst size.
NVRAM (Non-volatile
Random Access Memory) A medium for storing system configuration information, so the
information is not lost when the system is reset.
Octet A TCP/IP term that means eight bits.