A-8
Acronyms Full spelling
NMS Network Management Station
NPDU Network Protocol Data Unit
NPE Network Provider Edge
NQA Network Quality Analyzer
NSAP Network Service Access Point
NSC NetStream Collector
N-SEL NSAP Selector
NSSA Not-So-Stubby Area
NTDP Neighbor Topology Discovery Protocol
NTP Network Time Protocol
O Return
OAM Operation Administration and Maintenance
OAMPDU OAM Protocol Data Units
OC-3 OC-3
OID Object Identifier
OL Optical Line
OSI Open Systems Interconnection
OSPF Open Shortest Path First
P Return
P2MP Point to MultiPoint
P2P Point To Point
PAP Password Authentication Protocol
PCB Printed Circuit Board
PCM Pulse Code Modulation
PD Powered Device
PDU Protocol Data Unit
PE Provider Edge
PHP Penultimate Hop Popping
PHY Physical layer
PIM Protocol Independent Multicast
PIM-DM Protocol Independent Multicast-Dense Mode
PIM-SM Protocol Independent Multicast-Sparse Mode
PIR Peak Information Rate
PKCS Public Key Cryptography Standards
PKI Public Key Infrastructure
PMTU Path MTU