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n-selectors, 641
named-path software syntax, 640
narrow metrics, 302, 304
NBMA network types
OSPF, 168-172, 168
troubleshooting, 172-173, 172
negotiated hold times, 427
neighbors, 640
netmasks for loopback interfaces, 60
NETs (network entity titles)
defined, 640
in IS-IS, 258
network interface registration, 89
network layer reachability information (NLRI), 640
network-link advertisements, 640
network LSAs, 640
network management
configuring, 22-23
verifying, 23-24
network service access points (NSAPs), 640
Network Summary LSAs, 640
Network Time Protocol (NTP)
configuring, 24-25, 50-51
defined, 640
verifying, 25-28
network-to-network interface (NNI), 72
network types
IS-IS, 277-278
OSPF, 168-173, 168, 172
Next Hop attribute, 640
next-hop option, 487
next hops
for confederations, 415-416
for OoB management network configuration, 10
self policy, 522-525
NLPID encapsulation, 93
NLRI (network layer reachability information), 640
NMBA (non-broadcast multi-access) topology, 80
NNI (network-to-network interface), 72
no-authentication-check option, 278, 283, 286
no-export community, 429, 431
no-keepalives option, 85
no-readvertise tags, 10
no-summaries option in OSPF
NSSAs, 190-191
TSAs, 187
non-broadcast multi-access (NMBA) topology, 80
non-Martian addresses for unnumbered interfaces, 124
nonclient peers, 640
notification cells, 640
Notification messages, 640
NSAPs (network service access points), 640
NSSAs (not-so-stubby areas), 188
configuring, 188-191
defined, 641
verifying, 191-194
NTP (Network Time Protocol)
configuring, 24-25, 50-51
defined, 640
verifying, 25-28
ntpdate command, 25
Null Register messages, 641
numeric range match conditions, 641
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