Term
Abbreviation
or Acronym
Network Control ProtocolNCP
Neighbor DiscoveryND
Network Equipment Building SystemNEBS
network entity titleNET
network layer reachability informationNLRI
Network Management CenterNMC
network management systemNMS
network-to-network interfaceNNI
nonreturn to zeroNRZ
nonreturn to zero invertedNRZI
network service access pointNSAP
nonstop forwardingNSF
not-so-stubby area (refers to OSPF routing)NSSA
Network Time ProtocolNTP
nonvolatile random-access memoryNVRAM
nonvolatile storageNVS
O
operations, administration, and managementOAM
optical carrierOC
Open Database ConnectivityODBC
object identifierOID
outgoing interfaceOIF
outbound route filter; outbound route filteringORF
Open Systems InterconnectionOSI
OSI Internet Link Control Protocol; OSI Network Layer Control ProtocolOSINLCP
Open Shortest Path FirstOSPF
operations support systemOSS
P
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Appendix A: Abbreviations and Acronyms