4 nat command, 384 designing, 461-483 inside network using the Internet, 387 documentation, 461-471 overridden by static command, 385 driving forces of network design, 521 nat server command, 403 naming conventions for devices, 472 National Institute of Standards and network designs, 473-483 Technology (NIST), 511 major network, 99 native mode (single os model on chassis OSPF network, common design, 124 switches), 198 prefixes in BGP, 127 native mode (SVIs), 199 subnets, 95 NBMA (nonbroadcast multiaccess) supernet (group of major networks), 100 networks, 125 Index networks (continued) three-tier switched network, 43 types of, 3 object groups, 372-375 port-object object-group commands, 374 types supported by OSPF, 124 next hop object-group command, 373 off (VTP mode), CatOS, 50 changing with policy routing, 177 on mode (LACP and PAgP), 60 changing with route maps, 173 OOF (out-of-frame), 275 shown in example routing table entry, 97 NIST (National Institute of Standards and Open Shortest Path First routing protocol (see OSPF) Technology), 511 no auto-summary command, 116 operating systems Cisco switches and routers, 11 no failover active command, 383 no inservice command, 408 single VS. multiple on switches, 198 (see also CatOS; IOS) no ip route-cache command, 190 no login command, 344 operational state, CSM vservers, 409 no nat client command, 403 optimum switching, 181, 187 OSPF (Open Shortest Path First), 121-126 no redistribute igrp autonomous-system bandwidth-based metrics, 108 command (EIGRP), 135 DR (designated router), 123 no spanning-tree portfast command link-cost formula, changing for links faster (IOS), 80 than 100 Mbps, 121 no spanning-tree uplinkfast command link-state routing, 107 (IOS), 83 LSAs (link state advertisements), 122 no vtp pruning command (IOS), 52 mutual redistribution with EIGRP, 139, non-AAA authentication (see basic authentication) nonbackbone and backbone areas, network design (example), 124 network types supported, 124 OSPF, 122 OSPF database, 92 nonbroadcast multiaccess networks, 1