mmand, 469 show ip eigrp topology command, 172 show running-config switch-profile command, show ip interface brief command authentication example, 440 show service-module command, 371 IOS example, 223 show service-module performance-statistics show interface brief command and, 74, command, 373 show service-policy global command, 479 VRF example, 282 show sip-ua register status command, 560, show ip interface brief vrf management command, 282 show spanning-tree command, 91 show ip interface command, 204, 216 show spanning-tree root command, 94 show ip ospf database command, 142, 159 show spanning-tree summary command, 93 Index show spantree command, 92 sort command (NX-OS), 278 show spantree summary command, 94 Southwestern Bell, 351 show standby command, 184 SPAN (Switched Port Analyzer), 332-335 show storm-control command, 328 spanning tree show switch detail command, 319 BackboneFast feature, 93, 99-100 show switch virtual dual-active pagp command, BPDU Guard feature, 96 bridge assurance problem, 103 show switch virtual link command, 259 broadcast storms, 82-86 show switch virtual link detail command, 259 common problems, 100-103 show switch virtual role command, 258, 259 designing to prevent problems, 104 show switch-profile buffer command, 303 duplex mismatch problem, 100 show switch-profile status command, 304 functionality, 81, 88-91 show top command, 252 MAC address table instability, 86 show trunk command, 45 managing, 91-95 show vdc command, 285 network design considerations, 642 show vdc membership command, 285 PortFast feature, 95 show version command, 383, 490 preventing loops, 88-91 show vlan command states supported, 90 CatOS and, 30 unidirectional link problem, 101-103 configuring SVIs and, 223 UplinkFast feature, 93, 97 IOS and, 32, 33 Spanning Tree Protocol (STP), 81, 294 Nexus and NX-OS, 35 spanning-tree backbonefast command, 100 show vlan filter command, 430 spanning-tree bpduguard disable command, show vpc command, 79, 299, 300 show vpc consistency-parameters command, spanning-tree bpduguard e