Catalyst 4500 Series Switch Cisco IOS Command Reference, 12.2(31)SGA
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Table Of Contents

Symbols - Numerics - A - B - C - D - E - F - G - H - I - J - L - M - N - O - P - Q - R - S - T - U - V -



$ matches the end of a string     1-7

( ) in commands     1-10

* matches 0 or more sequences of a pattern     1-7

+ matches 1 or more sequences of a pattern     1-7

. matches any single character     1-7

? command     1-1

? matches 0 or 1 occurrence of a pattern     1-7

^ matches the beginning of a string     1-7

_ matches a comma (,), left brace ({), left parenthesis     1-7

"     1-10


10-Gigabit Ethernet uplink

selecting     2-125

showing the mode     2-352

802.1Q trunk ports and native VLANs     2-638

802.1Q tunnel ports

configuring     2-587

802.1S Multiple Spanning Tree

see MST


disabling port control     2-92

enabling port control     2-92

802.1X Critical Authentication

disabling on a port     2-93

disabling on a VLAN     2-96


disabling send success packets     2-94

enabling send success packets     2-94

enabling on a port     2-93

enabling on a VLAN     2-96

returning delay time to default setting     2-95

setting delay time on a port     2-95

802.1X Port Based Authentication

allowing multiple hosts on a port     2-103

debugging 802.1X Port Based Authentication     2-56

displaying port based authentication     2-338

enabling accounting for authentication sessions     2-3

enabling authentication on the system     2-108

enabling guest VLAN     2-97

enabling guest VLAN supplicant     2-90, 2-98

enabling manual control of auth state     2-104

enabling periodic re-authentication of the client     2-107

initializing re-authentication of dot1x ports     2-106

initializing state machines     2-99

receive session termination message upon reboot     2-4

setting maximum number for EAP requests     2-102

setting the reauthentication timer     2-109


abbreviating commands

context-sensitive help     1-1

Access Gateway Module

connecting to a module     2-12

connecting to a remote module     2-295

connecting to a specific remote module     2-305


displaying mac interface     2-444

show mode interface     2-309

access groups

IP     2-5

access lists

clearing an access template     2-28

defining ARP     2-11

displaying ARP information     2-312

See also ACLs, MAC ACLs, and VACLs

access maps

applying with VLAN filter     2-639


access-group mode     2-5

balancing hardware regions     2-8

determining ACL hardware programming     2-6

displaying mac access-group interface     2-444

using ACL naming conventions for MAC ACLs     2-206

action clause

specifying drop or forward action in a VACL     2-9

addresses, configuring a maximum     2-263


debugging the adjacency table     2-50

disabling the debug facility     2-50

displaying information about the adjacency table     2-310

displaying IPC table entries     2-50

aggregate policer

displaying information     2-491

aging time

displaying MAC address aging time     2-447

MAC address table     2-209


displaying operational status     2-341


description     1-9


description     1-10


access list, displaying detailed information     2-312

defining access-lists     2-11

ARP inspection

enforce certain types of checking     2-142

ARP packet

deny based on DHCP bindings     2-86

permit based on DHCP bindings     2-249


setting username     2-629

using an MD5-type encryption method     2-629

verifying MD5 signature     2-630

verifying the checksum for Flash memory     2-630

auth fail VLAN

enable on a port     2-91

set max number of attempts     2-90

authorization state

enabling manual control     2-104

authorization state of a controlled port     2-104

automatic installation

displaying status     2-313

automatic medium-dependent interface crossover

See Auto-MDIX


disabling     2-234

enabling     2-234

auto-negotiate interface speed

example     2-578


configuring for VoIP     2-13

displaying configuration     2-314


baby giants

displaying the system MTU setting     2-517

setting the maximum Layer 2 payload size     2-612


displaying debugging messages     2-75

displaying spanning tree status     2-507

enabling debugging     2-75


store for DHCP snooping     2-151

BOOT environment variable

displaying information     2-318


displaying information     2-316


debugging spanning tree activities     2-74

bridge protocol data units


broadcast suppression level

configuring     2-579, 2-581

enabling     2-579, 2-581


cable diagnostics


displaying test results     2-319

testing conditions of copper cables     2-613

Catalyst 4507R     2-259

power redundancy mode     2-264


configuring tunneling encapsulation rate     2-196


neighbor information     2-321

enabling protocol tunneling for     2-193

set drop threshold for     2-195


displaying next-hop information     2-386

displaying VLAN configuration information     2-386


macro apply     2-217

Cisco Express Forwarding



macro apply     2-219


macro apply     2-221


macro apply     2-223

clear commands

clearing Gigabit Ethernet interfaces     2-26

clearing IGMP group cache entries     2-33

clearing interface counters     2-23

clearing IP access lists     2-28, 2-29

clearing IP ARP inspection statistics VLAN     2-30

clearing IP DHCP snooping database     2-31

clearing IP DHCP snooping database statistics     2-32

clearing MFIB counters and routes     2-36

clearing MFIB fastdrop entries     2-37

clearing PAgP channel information     2-42

clearing QoS aggregate counters     2-45

clearing VLAN interfaces     2-27

CLI string search

anchoring     1-10

expressions     1-7

filtering     1-6

multiple-character patterns     1-8

multipliers     1-9

parentheses for recall     1-10

searching outputs     1-6

single-character patterns     1-7

using     1-6

command modes

accessing privileged EXEC mode     1-4

exiting     1-4

understanding user EXEC and configuration modes     1-4

condition interface

debugging interface-related activities     2-52

condition vlan

debugging VLAN output     2-55

configuration, saving     1-11


root as secondary     2-562

configuring a SPAN session to monitor

limit SPAN source traffic     2-238

configuring forward delay     2-558

configuring root as primary     2-562



policy map to control plane     2-303


policy-map class information     2-470

entering configuration mode     2-48


service policy from control plane     2-303


assigning to Layer 2 protocol packets     2-194

CoS QoS default

defining value on an interface     2-279

Cost of Service

See QoS CoS


clearing interface counters     2-23



clear statistics     2-30


displaying qos dbl     2-492

enabling DBL globally on the switch     2-280

debug commands

debugging backup events     2-51

debugging DHCP snooping events     2-61

debugging DHCP snooping messages     2-62

debugging EtherChannel/PAgP/shim     2-57

debugging IPC activity     2-60

debugging IP DHCP snooping security messages     2-63

debugging NVRAM activities     2-66

debugging PAgP activities     2-67

debugging port manager activities     2-70

debugging software MAC filter updates     2-73

debugging spanning tree activities     2-74

debugging spanning tree backbonefast     2-75

debugging spanning tree UplinkFast     2-78

debugging supervisor redundancy     2-72

debugging VLAN manager activities     2-79

displaying monitor activity     2-65

displaying the adjacency table     2-50

enabling debug dot1x     2-56

enabling debugging messages for ISL VLAN IDs     2-81

enabling debugging messages for VTP     2-82

enabling debugging of UDLD activity     2-83

enabling switch shim debugging     2-76

enabling VLAN manager file system error tests     2-80

limiting debugging output for VLANs     2-55

limiting interface debugging output     2-52

limiting output for debugging standby state changes     2-53

shortcut to the debug condition interface     2-59


activity monitoring     2-65

DHCP snooping events     2-61

DHCP snooping packets     2-62

IPC activities     2-60

IP DHCP snooping security packets     2-63

NVRAM activities     2-66

PAgP activities     2-67

PAgP shim     2-57

PM activities     2-70

SMF address insertions and deletions     2-73

spanning tree BackboneFast events     2-75

spanning tree switch shim     2-76

spanning tree UplinkFast events     2-78

VLAN manager activities     2-79

VLAN manager IOS file system error tests     2-80

VTP protocol debug messages     2-82

debug spanning tree switch     2-76

debug sw-vlan vtp     2-82

default CoS value     2-279

default form of a command, using     1-6

defining egress DSCP-to-CoS mapping     2-285


clearing database statistics     2-32

DHCP bindings

configuring bindings     2-150

deny ARP packet based on matches     2-86

permit ARP packet based on matches     2-249

DHCP snooping

clearing database     2-31

displaying binding table     2-388

displaying configuration information     2-387

displaying status of DHCP database     2-391

displaying status of error detection     2-344

enabling DHCP globally     2-149

enabling IP source guard     2-182

enabling on a VLAN     2-157

enabling option 82     2-153, 2-154

enabling rate limiting on an interface     2-155

enabling trust on an interface     2-156

establishing binding configuration     2-150

renew binding database     2-297

store generated bindings     2-151

diagnostic test

bootup packet memory     2-332

displaying attributes     2-326

display module-based results     2-328

running     2-89

show results for TDR     2-319

testing conditions of copper cables     2-613

displaying error disable recovery     2-345

displaying inline power status     2-483

displaying monitoring activity     2-65

displaying SEEPROM information

GBIC     2-353

displaying SPAN session information     2-516, 2-580

document conventions     xviii

document organization     xvii



attaching policy map to control plane     2-303

displaying policy-map class information     2-470

entering configuration mode     2-48

removing service policy from control plane     2-303


CoPP configuration mode     2-48

DOS attack

protecting system's resources     2-137

drop threshold, Layer 2 protocol tunneling     2-195

DSCP rewrite for IP packets

enable     2-288

dual-capable port

selecting a connector     2-235

duplex mode

configuring autonegotiation on an interface     2-111

configuring full duplex on an interface     2-111

configuring half duplex on an interface     2-111

dynamic ARP inspection

preventing     2-137

Dynamic Buffer Limiting


Dynamic Host Configuration Protocol




restarting authentication process     2-102

EIGRP (Enhanced IGRP)


routing updates, preventing     2-246


debugging for UDLD     2-83

voice VLANs     2-582


alarms     2-341

displaying information     2-341

status     2-341

temperature     2-341

erase a file     2-113

error disable detection

enabling error disable detection     2-116

error-disabled state

displaying     2-372

error disable recovery

configuring recovery mechanism variables     2-118

displaying recovery timer information     2-345

enabling ARP inspection timeout     2-118

specifying recovery cause     2-118


assigning interfaces to EtherChannel groups     2-17

debugging EtherChannel     2-57

debugging PAgP shim     2-57

debugging spanning tree activities     2-74

displaying information for a channel     2-346

removing interfaces from EtherChannel groups     2-17

EtherChannel guard

detecting STP misconfiguration     2-549

Explicit Host Tracking

clearing the database     2-35

enabling per-VLAN     2-169


matching multiple expression occurrences     1-9

multiple-character patterns     1-8

multiplying pattern occurrence     1-10

single-character patterns     1-7

Extensible Authentication Protocol



field replaceable unit (FRU)

displaying status information     2-341



routing updates, preventing     2-246

Flash memory file system

displaying file system information     2-316

verifying checksum     2-630

flow control

configuring a gigabit interface for pause frames     2-121

displaying per-interface statistics for flow control     2-350



displaying SEEPROM information     2-353

Gigabit Ethernet interface

clearing the hardware logic     2-26

Gigabit Ethernet uplink

selecting     2-125

showing the mode     2-352

global configuration mode

using     1-5


hardware module

resetting a module by toggling the power     2-124

hardware uplink

selecting the mode     2-125

showing the mode     2-352

helper addresses, IP     2-404

hot standby protocol

debugging     2-53

disabling debugging     2-53

limiting output     2-53



displaying SEEPROM information

chassis     2-353

clock module     2-353

fan trays     2-353

module     2-353

mux buffer     2-353

power supplies     2-353

supervisor engine     2-353

ifIndex persistence

clearing SNMP ifIndex commands     2-537

compress SNMP ifIndex table format     2-542

disabling globally     2-541

disabling on an interface     2-538

enabling globally     2-541

enabling on an interface     2-538


applying filters for host joining on Layer 2 interfaces     2-159

clearing IGMP group cache entries     2-33

configuring frequency for IGMP host-query messages     2-162

creating an IGMP profile     2-161

displaying IGMP interface configuration information     2-393

displaying profiles     2-394

setting maximum group numbers     2-160

IGMP profiles

displaying     2-394

IGMP snooping

clearing the EHT database     2-35

configuring a Layer 2 interface as a group member     2-173

configuring a Layer 2 interface as a multicast router     2-171

configuring a static VLAN interface     2-173

displaying multicast information     2-401

displaying VLAN information     2-395, 2-399, 2-402

enabling     2-164

enabling immediate-leave processing     2-170

enabling on a VLAN     2-168

enabling per-VLAN Explicit Host Tracking     2-169


enabling     2-539

inline power

displaying inline power status     2-483

In Service Software Upgrade


inspection log

clearing log buffer     2-29


displaying suppressed multicast bytes     2-366

interface capabilities

displaying     2-362

interface configuration mode

summary     1-5

interface link

display cable disconnect time     2-369


configuring dot1q tunnel ports     2-587

creating an interface-range macro     2-85

debugging output of interface related activities     2-52

displaying description     2-368

displaying error-disabled state     2-372

displaying information when tunneling is enabled     2-438

displaying status     2-368

displaying traffic for a specific interface     2-359

entering interface configuration mode     2-129

executing a command on multiple ports in a range     2-132

selecting an interface to configure     2-129

setting a CoS value for Layer 2 packets     2-194

setting drop threshold for Layer 2 packets     2-195

setting the interface type     2-587

interface speed

configuring interface speed     2-576

interface transceiver

displaying diagnostic data     2-375

internal VLAN allocation

configuring     2-640

default setting     2-640

displaying allocation information     2-528

Internet Group Management Protocol



applying ARP ACL to VLAN     2-135

clearing inspection statistics     2-30

clearing status of log buffer     2-29

controlling packet logging     2-145

enabling dynamic inspection     2-144

limit rate of incoming requests     2-137

set per-port config trust state     2-141

showing status of dynamic ARP inspection     2-382

showing status of log buffer     2-385


debugging IPC activities     2-60

IP DHCP Snooping

See DHCP snooping

IP header validation

disabling     2-181

enabling     2-181

IP interfaces

displaying usability status     2-403

IP multicast

displaying multicast routing table information     2-409

IP packets

enable DSCP rewrite     2-288

IP phone and standard desktop

enabling Cisco-recommended features     2-219

IP source binding

adding or deleting     2-178

displaying bindingstagging     2-414

IP source guard

debugging messages     2-63

displaying configuration and filters     2-415

enabling on DHCP snooping     2-182


canceling process     2-184

configuring rollback timer     2-192

displaying capability     2-419

displaying client information     2-421

displaying compatibility matrix     2-423

displaying config-sync failure information     2-427

displaying endpoint information     2-429

displaying entities     2-430

displaying FSM session     2-431

displaying messages     2-432

displaying negotiated     2-433

displaying rollback-timer     2-434

displaying session information     2-435

displaying software version     2-436

displaying state     2-436

forcing switchover to standby supervisor engine     2-191

loading new image     2-187

mismatched command listing     2-188

starting process     2-190

stopping rollback timer     2-185


Jumbo frames

enabling jumbo frames     2-242



deselecting channeling protocol     2-19

enabling LACP on an interface     2-19

setting channeling protocol     2-19

Layer 2

displaying ACL configuration     2-444

Layer 2 interface type

specifying a nontrunking, nontagged single VLAN interface     2-587

specifying a trunking VLAN interface     2-587

Layer 2 protocol ports

displaying     2-438

Layer 2 protocol tunneling error recovery     2-196

Layer 2 switching

enabling voice VLANs     2-582

modifying switching characteristics     2-582

Layer 2 traceroute

IP addresses     2-618

Layer 3 switching

displaying information about an adjacency table     2-310

displaying port status     2-373

displaying status of native VLAN tagging     2-373

link-status event messages


globally     2-200, 2-203

on an interface     2-201, 2-204


globally     2-200, 2-203

on an interface     2-201, 2-204

log buffer

show status     2-385


controlling IP ARP packets     2-145


MAC Access Control Lists



defining extended MAC access list     2-206

displaying MAC ACL information     2-525

naming an ACL     2-206

MAC address filtering

configuring     2-215

disabling     2-215

enabling     2-215

MAC address table

adding static entries     2-228

clearing dynamic entries     2-39, 2-41

configuring aging time     2-209

displaying dynamic table entry information     2-449

displaying entry count     2-448

displaying information     2-445

displaying interface-based information     2-451

displaying multicast information     2-453

displaying notification information     2-455

displaying protocol-based information     2-457

displaying static table entry information     2-459

displaying the MAC address aging time     2-447

displaying VLAN-based information     2-461

enabling authentication bypass     2-100

enabling notifications     2-213

learning in the protocol buckets     2-210

removing static entries     2-228

MAC address tables

adding static entries     2-215

deleting secure or specific addresses     2-43

disabling IGMP snooping on static MAC addresses     2-215

removing static entries     2-215

mac-address-table static     2-215

MAC address unicast filtering

dropping unicast traffic     2-215


displaying descriptions     2-227

macro keywords

help strings     2-2


adding a global description     2-227

cisco global     2-225

system-cpp     2-226

mapping secondary VLANs to MST instance     2-271

mapping VLAN(s) to an MST instance     2-127

match subcommand

accessing     2-21

maximum transmission unit (MTU)

displaying the system MTU setting     2-517

setting the maximum Layer 2 payload size     2-612


verifying MD5 signature     2-630

message digest 5

See MD5


clearing ip mfib counters     2-36

clearing ip mfib fastdrop     2-37

displaying all active MFIB routes     2-406

displaying MFIB fastdrop table entries     2-408

enabling IP MFIB fastdrops     2-175


access-group     2-5

show access-group interface     2-309

switching between PVST+, MST, and Rapid PVST     2-554

See also command modes

module password clearing     2-25

module reset

resetting a module by toggling the power     2-124

--More-- prompt

filter     1-6

search     1-7


designating the primary and secondary root     2-562

displaying MST protocol information     2-512

displaying region configuration information     2-512

displaying spanning tree information     2-512

entering MST configuration submode     2-556

setting configuration revision number     2-299

setting path cost and port priority for instances     2-555

setting the forward delay timer for all instances     2-558

setting the hello-time delay timer for all instances     2-559

setting the max-age timer for all instances     2-560

setting the MST region name     2-243

specifying the maximum number of hops     2-561

switching between PVST+ and Rapid PVST     2-554

using the MST configuration submode revision command     2-299

using the submode name command     2-243


displaying global MTU settings     2-517


enabling storm control     2-581

multicast/unicast packets

prevent forwarding     2-586

Multicast Forwarding Information Base


multiple-character patterns     1-8

multiple hosts on authorized port     2-103

Multiple Spanning Tree



native VLAN

controlling tagging of traffic     2-607

displaying ports eligible for native tagging     2-527

displaying ports eligible for tagging     2-527

enabling tagging on 802.1Q trunk ports     2-638

specifing the tagging of traffic     2-608


enabling NetFlow statistics     2-176

including infer fields in routing statistics     2-176


displaying CEF VLAN information     2-386

no form of a command, using     1-6


debugging NVRAM activities     2-66



pattern searches     1-7


packet forwarding

prevent unknown packets     2-586

packet memory failure

direct switch action upon detection     2-88

packet memory test

bootup, displaying results     2-332, 2-334

ongoing, displaying results     2-336


access-group mode     2-5

paging prompt

see --More-- prompt


clearing port channel information     2-42

debugging PAgP activity     2-67

deselecting channeling protocol     2-19

displaying port channel information     2-467

hot standby mode

returning to defaults     2-245

selecting ports     2-245

input interface of incoming packets

learning     2-244

returning to defaults     2-244

setting channeling protocol     2-19

parentheses     1-10


clearing on an intelligent line module     2-25

establishing enhanced password security     2-629

setting username     2-629


displaying route maps      xviii

redistributing route maps      xviii

PM activities

debugging     2-70

disabling debugging     2-70

Policy Based Routing


port, dual-capable

selecting the connector     2-235

Port Aggregation Protocol

See PAgP

port-based authentication

displaying debug messages     2-56

displaying statistics and status     2-338

enabling 802.1X     2-104

manual control of authorization state     2-104

multiple hosts on authorized port     2-103

periodic re-authentication

enabling     2-107

re-authenticating 802.1X-enabled ports     2-106

switch-to-client frame-retransmission number     2-102

port channel

accessing     2-131

creating     2-131

displaying information     2-467

load distribution method

resetting to defaults     2-253

setting     2-253

port range

executing     2-132

port security

debugging ports security     2-71

deleting secure or specific addresses     2-43

displaying settings for an interface or switch     2-477

enabling     2-592

filter source IP and MAC addresses     2-182

setting action upon security violation     2-592

setting the rate limit for bad packets     2-592

sticky port     2-592

Port Trust Device

displaying     2-493

power status

displaying inline power     2-483

displaying power status     2-483

power supply

configuring combined and redundant power on the Catalyst 4507R     2-259

configuring inline power     2-256

configuring power consumption     2-258

configuring power redundancy on the Catalyst 4507R     2-264

displaying the SEEPROM     2-353

setting inline power state     2-255

Private VLAN


privileged EXEC mode, summary     1-5


system     1-5

protocol tunneling

configuring encapsulation rate     2-196

disabling     2-193

displaying port information     2-438

enabling     2-193

setting a CoS value for Layer 2 packets     2-194

setting a drop threshold for Layer 2 packets     2-195


configuring isolated, primary, and community PVLANs     2-265

controlling tagging of native VLAN traffic     2-607

disabling sticky-ARP     2-179

displaying map information for VLAN SVIs     2-371

displaying PVLAN information     2-530

enabling interface configuration mode     2-587

enabling sticky-ARP     2-179

mapping VLANs to the same SVI     2-269

specifying host ports     2-587

specifying promiscuous ports     2-587


switching between PVST and MST     2-554



account Layer 2 encapsulation     2-274

attaching a policy-map to an interface     2-300

automatic configuration     2-13

clearing aggregate counters     2-45

configuring a QoS policy map     2-251

configuring auto     2-13

defining a named aggregate policer     2-276

defining default CoS value     2-279

defining ingress CoS-to-DSCP mapping     2-283

displaying aggregate policer information     2-491

displaying auto configuration     2-314

displaying class maps information     2-324

displaying configuration information     2-314

displaying configurations of policies     2-473

displaying policy map information     2-469, 2-476

displaying QoS information     2-490

displaying QoS map information     2-494

enabling global configuration mode     2-272

enabling per-VLAN QoS for a Layer 2 interface     2-291

enabling QoS on an interface     2-273

mapping DSCP values to transmit queues     2-285

mapping egress DSCP-to-CoS     2-285

mapping the DSCP-to-CoS value     2-285

setting the mapping of policed DSCP values     2-287

setting the trust state     2-289

specifying flow-based match criteria     2-230


configuring for tunneled Layer 2 protocol packets     2-194

defining default CoS value     2-279

qos dbl     2-280

question command     1-1

queueing information

displaying     2-493


Rapid PVST

switching between PVST and MST     2-554

re-authenticating 802.1X-enabled ports     2-106


periodic     2-107

set the time     2-109


restoring bindings across     2-150


accessing the main CPU     2-292

changing from active to standby supervisor engine     2-293

displaying information     2-496

displaying redundancy facility information     2-496

displaying RF client list     2-496

displaying RF operational counters     2-496

displaying RF states     2-496

enabling automatic synchronization     2-16

forcing switchover to standby supervisor engine     2-293

set the mode     2-236

synchronizing the route processor configurations     2-228

related documentation     xvii

remote SPAN


renew commands

ip dhcp snooping database     2-297

resetting PVLAN trunk

setting switchport to trunk     2-587

rj45 connector, selecting the connector     2-235

ROM monitor mode

summary     1-6

Route Processor Redundancy

See redundancy


set the redundancy mode     2-236


converting VLAN to RSPAN VLAN     2-296

displaying list     2-532


saving configuration changes     1-11

secure address, configuring     2-261

secure ports, limitations     2-593

set the redundancy mode     2-236

sfp connector, selecting the connector     2-235

show commands

filtering parameters     1-7

searching and filtering     1-6

show platform commands     1-11

Simple Network Management Protocol


single-character patterns

special characters     1-7


displaying information on the standby supervisor     2-503


displaying information about the system     2-505


debugging address insertions and deletions     2-73


debugging spanning tree activities     2-74

ifIndex persistence

clearing SNMP ifIndex commands     2-537

compress SNMP ifIndex table format     2-542

disabling globally     2-541

disabling on an interface     2-538

enabling globally     2-541

enabling on an interface     2-538


disabling     2-539

enabling     2-539


configuring to send when storm occurs     2-579

disabling     2-539

enabling     2-539


adding     1

removing     1

software MAC filter


SPAN commands

configuring a SPAN session to monitor     2-238

displaying SPAN session information     2-516, 2-580

SPAN enhancements

displaying status     2-465

Spanning Tree Protocol


SPAN session

displaying session information     2-465

filter ACLs     2-238

specify encap type     2-238

turn off host learning based on ingress packets     2-238

special characters

anchoring, table     1-10

SSO     2-236

standard desktop

enabling Cisco-recommended features     2-217

standard desktop and Cisco IP phone

enabling Cisco-recommended features     2-219

sticky address, configuring     2-262


disabling on PVLANs     2-179

enabling on PVLANs     2-179

sticky port

deleting     2-43

enabling security     2-592

storm control

configuring for action when storm occurs     2-579

disabling suppression mode     2-344

displaying settings     2-515

enabling     2-579

enabling broadcast     2-579, 2-581

enabling multicast     2-579, 2-581

enabling suppression mode     2-344

enabling timer to recover from error disable     2-118

enabling unicast     2-579, 2-581

multicast, enabling     2-581

setting high and low levels     2-579

setting suppression level     2-344


configuring link type for a port     2-552

configuring tunneling encapsulation rate     2-196

debugging all activities     2-74

debugging spanning tree activities     2-74

debugging spanning tree BackboneFast events     2-75

debugging spanning tree UplinkFast     2-78

detecting misconfiguration     2-549

displaying active interfaces only     2-507

displaying BackboneFast status     2-507

displaying bridge status and configuration     2-507

displaying spanning tree debug messages     2-74

displaying summary of interface information     2-507

enabling BPDU filtering by default on all PortFast ports     2-567

enabling BPDU filtering on an interface     2-545

enabling BPDU guard by default on all PortFast ports     2-569

enabling BPDU guard on an interface     2-547

enabling extended system ID     2-550

enabling loop guard as a default on all ports     2-553

enabling PortFast by default on all access ports     2-570

enabling PortFast mode     2-565

enabling protocol tunneling for     2-193

enabling root guard     2-551

enabling spanning tree BackboneFast     2-544

enabling spanning tree on a per VLAN basis     2-574

enabling spanning tree UplinkFast     2-572

setting an interface priority     2-571

setting drop threshold for     2-195

setting pathcost     2-548

setting the default pathcost calculation method     2-564

subinterface configuration mode, summary     1-6


creating a Layer 3 interface on a VLAN     2-134

switchport     2-608

switchport interfaces

displaying status of Layer 3 port     2-373

displaying status of native VLAN tagging     2-373

switch shim

debugging     2-76

disabling debugging     2-76

switch to router connection

enabling Cisco-recommended features     2-221

switch to switch connection

enabling Cisco-recommended features     2-223

switch virtual interface


sw-vlan     2-79

system prompts     1-5


Tab key

command completion     1-1


characters with special meaning     1-7

mac access-list extended subcommands     2-206

match syntax description     2-22

multipliers     1-9

relationship between duplex and speed commands     2-577

show cable-diagnostics tdr command output fields     2-320

show cdp neighbors detail field descriptions     2-323

show cdp neighbors field descriptions     2-322

show ip interface field descriptions     2-404

show policy-map control-plane field descriptions     2-472

show vlan command output fields     2-531

show vtp command output fields     2-535

special characters     1-9

special characters used for anchoring     1-10

speed command options     2-230, 2-576

valid interface types     2-129


displaying information useful to TAC     2-518


debugging spanning tree activities     2-74


displaying cable diagnostic test results     2-319

test condition of copper cables     2-613

temperature readings

displaying information     2-341

timer information     2-345

traffic shaping

enable on an interface     2-307

traps, enabling     2-539

trunk encapsulation

setting format     2-608

trunk interfaces

displaying trunk interfaces information     2-380

trust state

setting     2-141

tunnel ports

displaying information about Layer 2 protocol     2-438

TX queues

allocating bandwidth     2-621

returning to default values     2-621

setting priority to high     2-621

specifying burst size     2-621

specifying traffic rate     2-621



displaying administrative and operational status     2-520

enabling by default on all fiber interfaces     2-623

enabling on an individual interface     2-625

preventing a fiber interface from being enabled     2-625

resetting all shutdown ports     2-627

setting the message timer     2-623

Unidirectional Link Detection


unknown multicast traffic, preventing     2-586

unknown unicast traffic, preventing     2-586

user EXEC mode, summary     1-5


setting password and privilege level     2-629



access-group mode     2-5

applying VLAN access maps     2-639

displaying VLAN access map information     2-525

specifying an action in a VLAN access map     2-9

specifying the match clause for a VLAN access-map sequence     2-229

using a VLAN filter     2-639


applying an ARP ACL     2-135

configuring     2-632

converting to RSPAN VLAN     2-296

displaying CEF information     2-386

displaying CEF next-hop information     2-386

displaying information on switch interfaces     2-395, 2-399

displaying information on VLAN switch interfaces     2-402

displaying information sorted by group IP address     2-395, 2-399

displaying IP address and version information     2-395, 2-399

displaying Layer 2 VLAN information     2-521

displaying statistical information     2-463

displaying VLAN information     2-523

enabling dynamic ARP inspection     2-144

enabling Explicit Host Tracking     2-169

enabling guest per-port     2-97

enabling guest VLAN supplicant     2-90, 2-98

entering VLAN configuration mode     2-636

native frames

enabling tagging on all 802.1Q trunk ports     2-638

pruning the list for VTP     2-608

setting the list of allowed     2-608

VLAN Access Control Lists


VLAN access map


VLAN database

resetting     2-298

VLAN debugging

limiting output     2-55

VLAN manager

debugging     2-79

disabling debugging     2-79

IOS file system error tests

debugging     2-80

disabling debugging     2-80

VLAN Query Protocol


VLAN query protocol (VQPC)

debugging     2-84



counters     2-46

clearing hardware logic     2-27


internal allocation scheme     2-640


internal VLAN allocation information     2-528

RSPAN VLANs     2-532

entering VLAN configuration mode     2-636


configuring servers     2-644

reconfirming dynamic VLAN assignments     2-642

voice VLANs

enabling     2-582


configuring auto-QoS     2-13


per-server retry count     2-643

reconfirming dynamic VLAN assignments     2-642


configuring the administrative domain name     2-648

configuring the device in VTP client mode     2-647

configuring the device in VTP server mode     2-651

configuring the device in VTP transparent mode     2-652

configuring tunnel encapsulation rate     2-196

creating a VTP domain password     2-649

displaying domain information     2-534

displaying statistics information     2-534

enabling protocol tunneling for     2-193

enabling pruning in the VLAN database     2-650

enabling VTP version 2 mode     2-653

modifying the VTP configuration storage file name     2-646

set drop threshold for     2-195

VTP protocol code

activating debug messages     2-82

deactivating debug messages     2-82