67 MPLS, 409-414 nat command, 502, 505 naming conventions for devices, 637 NAT Overload, 501 types of, 1 NAT-PT feature, 679 Nexus 2000 devices, 270-272 National Institute of Standards and Technology Nexus 5000 devices (NIST), 694 about, 268-270 native mode, defined, 222 configuring SVIs, 227 NBMA (nonbroadcast multiaccess) networks, FEX support, 15 rack space, 16 NEBS-compliant switches, 17, 231 Nexus 7000 devices NEMA L6-20P plug, 17 about, 266-267 NEMA L6-20R receptacles, 17 configuring SVIs, 227 NetWare Asynchronous Services Interface default user roles, 442 (NASI), 453 midplane architecture, 267 Network Address Translation (see NAT) switchport commands and, 36, 46 Network Analysis Modules (NAMs), 15, 231, Nexus platform, 265 Index (see also NX-OS; specific Nexus devices) configuring, 693-696 about, 15, 265 design considerations, 691-693 config-sync feature, 80, 300-309 NTP client, 693-695 configuration rollback, 309-312 ntp master command, 696 configuring FEXs, 290-294 ntp peer command, 696 configuring trunks, 46 NTP peers, 692 configuring VLANs, 35 NTP server, 696 dedicated rate-mode and, 287-290 ntp server command, 693 design features, 280-281 ntp update-calendar command, 696 HSRP and, 189 Number Resource Organization (NRO), 671 new iconography, 279 NX-OS rack space, 16 about, 273 unified fabric, 265 authentication and, 439, 450 upgrading NX-OS, 312-316 config-sync feature, 80, 300-309 VDC support, 283-287 configuring EtherChannel, 73 vPC support, 76, 294-300 configuring SVIs, 227 VRF support, 207, 281-283 configuring trunks, 46 NIC (network interface card), 514 configuring VLANs, 35-36 NIST (National Institute of Standards and HSRP and, 189 Technology), 694 IOS comparison, 274-279 NM-1A-T3 module, 381 login authentication, 455 no auto qos voip command, 340 managing spanning tree, 91 no auto-summary command, 135 NTP client, 693-695 no failover active command, 497 upgrading, 312-316 no frame-relay inverse-arp command, 399 useful commands, 278 no ip route-cache command, 216 user roles and, 442 no login comma