Setup guide

Glossary
GL-9
Cisco 6400 Software Setup Guide
OL-1183-04
NMS network management system. System responsible for managing at least part of a network. An NMS is
generally a reasonably powerful and well-equipped computer such as an engineering workstation.
NMSs communicate with agents to help keep track of network statistics and resources.
NNI
Network-to-Network Interface. ATM Forum standard that defines the interface between two ATM
switches that are both located in a private network or are both located in a public network. The interface
between a public switch and private one is defined by the UNI standard.
NRP node route processor. One of the component modules used in the Cisco 6400. This module is the
Layer3 element for the Cisco 6400 responsible for implementing the routing function.
NRP-1 Node route processor that incorporates a 100-Mbps Fast Ethernet interface for connecting into an IP
network and has processing capability for OC-3 rate of user traffic. Compare with NRP-2.
NRP-2
Node route processor that provides a Gigabit Ethernet interface and sufficient processing capability for
handling OC-12 rate of user traffic. Compare with NRP-1.
NSNAP network service access point. Network addresses, as specified by ISO. An NSAP is the point at which
OSI Network Service is made available to a transport layer (Layer 4) entity.
NSP node switch processor. One of the component modules used in the Cisco 6400. This module is
responsible for all ATM switching and control functions within the Cisco 6400.
NVRAM
Nonvolatile RAM. RAM that retains its contents when a unit is powered off.
O
OC optical carrier. A series of physical protocols (OC-3, OC-12, and so on), defined for SONET optical
signal transmissions.
OIR online insertion and removal. Feature that permits the addition, replacement, or removal of cards
without interrupting the system power, entering console commands, or causing other software or
interfaces to shut down. Sometimes called hot swapping or power-on servicing.
P
PAM mailbox serial
interface
Backplane interface that connects the NSP and the NRP-2. Used for internal communication only, the
PAM mailbox serial interface is not intended to carry user data.
PAP Password Authentication Protocol. Authentication protocol that allows PPP peers to authenticate one
another. The remote router attempting to connect to the local router is required to send an
authentication request. Unlike CHAP, PAP passes the password and host name or username in the clear
(unencrypted). PAP does not itself prevent unauthorized access, but merely identifies the remote end.
The router or access server then determines if that user is allowed access. PAP is supported only on
PPP lines. Compare with CHAP.
PCMCIA Personal Computer Memory Card International Association. Refers to a standard used for
credit-card-sized computer peripherals. Type I devices are very thin memory cards: Type 2 devices
include most modems and interfaces; and Type 3 devices are used for disk drives and thicker
components.