NAKs (negative acknowledgments), 501
names for VTP, 114
NAT (Network Address Translation), 501
native IOS, 412
nbma-mode option, 320
NCP (Network Control Protocol), 501
negative acknowledgments (NAKs), 501
neighbor-filter option, 320
neighboring routers, 501
NetBEUI (NetBIOS Extended User Interface), 501
NetBIOS (Network Basic Input/Output System), 501
NetFlow Feature Cards (NFFCs), 244, 502
NetFlow switching hardware, 100
NetWare Link Services Protocol (NLSP), 502
NetWare operating system, 501
Network Address Translation (NAT), 501
network addresses
defined, 501
in routing, 14
Network Basic Input/Output System (NetBIOS), 501
Network Control Protocol (NCP), 501
Network File System (NFS), 502
network interface cards (NICs)
defined, 502
frame tagging with, 101
for ISL, 209
Network layer, 12, 501
network loops, 146
Network Management Processor (NMP), 502
network services, 9-10
network termination 1 (NT1), 503
network termination 2 (NT2), 503
Next Hop Resolution Protocol (NHRP), 502
Next Hop Server (NHS), 502
NFFCs (NetFlow Feature Cards), 244, 502
NFS (Network File System), 502
NHRP (Next Hop Resolution Protocol), 502
NHS (Next Hop Server), 502
NICs (network interface cards)
defined, 502
frame tagging with, 101
for ISL, 209
NLSP (NetWare Link Services Protocol), 502
NMP (Network Management Processor), 502
no debug all command, 422
no duplex command, 458
no ip classless command, 324
no ip mls command, 251
no ip mroute-cache command, 327
no ip routing command, 251
no mls rp ip command, 250
no port block command, 459
no shutdown command, 217
no spanning-tree command, 150
no spanning-tree vlan command, 460
no spanning-tree vlan forward-time command, 460
no spanning-tree vlan hello-time command, 460
no spanning-tree vlan max-age command, 460
no spanning-tree vlan priority command, 460
no switchport command, 269
no switchport access command, 459
no switchport mode command, 459
no switchport trunk allowed command, 459
no switchport trunk encapsulation command, 459
no vlan cost command, 460
no vlan priority command, 460
node addresses, 502
non-blocking switches, 403-404, 403, 502
non-designated ports, 142
non-root bridges, 142
non-stub areas, defined, 502
non-volatile RAM (NVRAM)
copying, 70
defined, 503
erasing, 71-72
nondesignated ports, 502
nonegotiate option, 104
NRZ (Nonreturn to Zero) encoding scheme, 502
NRZI (Nonreturn to Zero Inverted) encoding scheme, 502-503
NT1 (network termination 1), 502
NT2 (network termination 2), 503
null domains, 253
NVRAM (non-volatile RAM)
copying, 70
defined, 503
erasing, 71-72