Specifications

Glossary
GL-4
Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
N
nrtVBR
Non-real-time-variable-bit-rate is intended for non-real-time application that have bursty traffic
characteristics, and which are characterized in terms of a PCR, SCR, and MBS.
NSAP
Network Service Access Point.
NIC
Network Interface Card. An ATM card for a host or router is an ATM NIC.
NNI
Network-to-network interface.
O
Object
In the context of SNMP, a data variable that represents some resource or other aspect of a managed
device.
Object type
Defines a particular kind of managed object. The definition of an object type is therefore a syntactic
description.
P
PCR
Peak Cell Rate.
PGL
Peer Group Leader.
PNNI
Private Network-to-Network Interface.
PNNI RCC
PNNI routing control channel. See RCC.
Port
A port is a connector on the switch to which a communications line can attach. When an ATM interface
is defined for an AXSM port, the ATM interface can be called an ATM interface or ATM port.
PTSE
PNNI Topology State Element.
PXM
Processor Switch Module. Also refers to the PXM and PXM1 cards that control MGX 8230, 8250 and
8850 Release 1 switches.
PXM45
Processor Switch Module card that operates at 45 Gbps. This card is designed for MGX 8850 and
MGX 8950 switches.
PXM45/B
Newer version of the PXM45 that is designed for MGX 8850 and MGX 8950 switches.
R
RCC
Routing control channel. A VCC used for the exchange of PNNI routing protocol messages.
RFC
Request For Comment.