- Quick Links to Catalyst 4500 Series Switch Cisco IOS Commands
- Index
- Preface
- Command-Line Interface
- aaa accounting dot1x default start-stop group radius through instance
- interface port-channel through session module
- show access-group mode interface through show vtp
- snmp ifindex clear through vtp v2-mode
- Acronyms
- Acknowledgments for Open-Source Software
Symbols -
Numerics -
A -
B -
C -
D -
E -
F -
G -
H -
I -
J -
L -
M -
N -
O -
P -
Q -
R -
S -
T -
U -
V -
Index
Symbols
$ matches the end of a string1-7
( ) in commands1-10
* matches 0 or more sequences of a pattern1-7
+ matches 1 or more sequences of a pattern1-7
. matches any single character1-7
? command1-1
? matches 0 or 1 occurrence of a pattern1-7
^ matches the beginning of a string1-7
_ matches a comma (,), left brace ({), left parenthesis1-7
"1-10
Numerics
802.1Q trunk ports and native VLANs2-501
802.1Q tunnel ports
configuring2-462
802.1s Multiple Spanning Tree
802.1x Port Based Authentication
allowing multiple hosts on a port2-85
debugging 802.1x Port Based Authentication2-48
displaying port based authentication2-255
enabling accounting for authentication sessions2-3
enabling authentication on the system2-90
enabling guest VLAN2-81
enabling manual control of auth state2-86
enabling periodic re-authentication of the client2-89
initializing re-authentication of dot1x ports2-88
initializing state machines2-82
receive session termination message upon reboot2-4
setting maximum number for EAP requests2-84
A
abbreviating commands
context-sensitive help1-1
Access Gateway Module
connecting to a module2-9
connecting to a remote module2-230
connecting to a specific remote module2-236
access-group
displaying mac interface2-335
show mode interface2-239
access groups
IP2-5
access lists
clearing an access template2-25
defining ARP2-8
displaying ARP information2-240
See also ACLs, MAC ACLs, and VACLs
access maps
applying with VLAN filter2-502
ACLs
access-group mode2-5
displaying mac access-group interface2-335
using ACL naming conventions for MAC ACLs2-163
action clause
specifying drop or forward action in a VACL2-6
adjacency
debugging the adjacency table2-42
disabling the debug facility2-42
displaying IPC table entries2-42
aggregate policer
displaying information2-368
aging time
displaying MAC address aging time2-338
MAC address table2-166
alarms
displaying operational status2-258
alternation
description1-9
anchoring
description1-10
ARP
access list, displaying detailed information2-240
defining access-lists2-8
ARP inspection
enforce certain types of checking2-118
ARP packet
deny based on DHCP bindings2-78
permit based on DHCP bindings2-190
authentication
setting username2-492
using an MD5-type encryption method2-492
verifying MD5 signature2-493
verifying the checksum for Flash memory2-493
authorization state
enabling manual control2-86
authorization state of a controlled port2-86
auto-QoS
configuring for VoIP2-10
displaying configuration2-241
B
baby giants
displaying the system MTU setting2-393
setting the maximum Layer 2 payload size2-477
BackboneFast
displaying debugging messages2-67
displaying spanning tree status2-384
enabling debugging2-67
bindings
store for DHCP snooping2-126
BOOT environment variable
displaying information2-245
bootflash
displaying information2-243
BPDUs
debugging spanning tree activities2-66
bridge protocol data units
broadcast suppression level
C
Catalyst 4507R2-200
power redundancy mode2-202
CDP
configuring tunneling encapsulation rate2-160
enabling protocol tunneling for2-157
set drop threshold for2-159
CEF
displaying next-hop information2-299
displaying VLAN configuration information2-299
cisco-desktop
macro apply2-172
Cisco Express Forwarding
cisco-phone
macro apply2-174
cisco-router
macro apply2-176
cisco-switch
macro apply2-178
clear commands
clearing Gigabit Ethernet interfaces2-23
clearing IGMP group cache entries2-30
clearing interface counters2-20
clearing IP access lists2-25, 2-26
clearing IP ARP inspection statistics VLAN2-27
clearing IP DHCP snooping database2-28
clearing IP DHCP snooping database statistics2-29
clearing MFIB counters and routes2-33
clearing MFIB fastdrop entries2-34
clearing PAgP channel information2-37
clearing QoS aggregate counters2-39
clearing VLAN interfaces2-24
CLI string search
anchoring1-10
expressions1-7
filtering1-6
multiple-character patterns1-8
multipliers1-9
parentheses for recall1-10
searching outputs1-6
single-character patterns1-7
using1-6
command modes
accessing privileged EXEC mode1-4
exiting1-4
understanding user EXEC and configuration modes1-4
condition interface
debugging interface-related activities2-44
condition vlan
debugging VLAN output2-47
configuration, saving1-11
configuring
root as secondary2-437
configuring a SPAN session to monitor
limit SPAN source traffic2-182
configuring forward delay2-433
configuring root as primary2-437
CoS
assigning to Layer 2 protocol packets2-158
CoS QoS default
defining value on an interface2-215
Cost of Service
counters
clearing interface counters2-20
D
DAI
clear statistics2-27
DBL
displaying qos dbl2-369
enabling DBL globally on the switch2-216
debug commands
debugging backup events2-43
debugging DHCP snooping events2-53
debugging DHCP snooping messages2-54
debugging EtherChannel/PAgP/shim2-49
debugging IPC activity2-52
debugging IP DHCP snooping security messages2-55
debugging NVRAM activities2-58
debugging PAgP activities2-59
debugging port manager activities2-62
debugging software MAC filter updates2-65
debugging spanning tree activities2-66
debugging spanning tree backbonefast2-67
debugging spanning tree UplinkFast2-70
debugging supervisor redundancy2-64
debugging VLAN manager activities2-71
displaying monitor activity2-57
displaying the adjacency table2-42
enabling debug dot1x2-48
enabling debugging messages for ISL VLAN IDs2-73
enabling debugging messages for VTP2-74
enabling debugging of UDLD activity2-75
enabling switch shim debugging2-68
enabling VLAN manager file system error tests2-72
limiting debugging output for VLANs2-47
limiting interface debugging output2-44
limiting output for debugging standby state changes2-45
shortcut to the debug condition interface2-51
debugging
activity monitoring2-57
DHCP snooping events2-53
DHCP snooping packets2-54
IPC activities2-52
IP DHCP snooping security packets2-55
NVRAM activities2-58
PAgP activities2-59
PAgP shim2-49
PM activities2-62
SMF address insertions and deletions2-65
spanning tree BackboneFast events2-67
spanning tree switch shim2-68
spanning tree UplinkFast events2-70
VLAN manager activities2-71
VLAN manager IOS file system error tests2-72
VTP protocol debug messages2-74
debug spanning tree switch2-68
debug sw-vlan vtp2-74
default CoS value2-215
default form of a command, using1-6
defining egress DSCP-to-CoS mapping2-220
DHCP
clearing database statistics2-29
DHCP bindings
configuring bindings2-125
deny ARP packet based on matches2-78
permit ARP packet based on matches2-190
DHCP snooping
clearing database2-28
displaying2-300
displaying binding table2-301
displaying status of DHCP database2-304
displaying status of error detection2-261
enabling DHCP globally2-124
enabling IP source guard2-155
enabling on a VLAN2-131
enabling option 822-128
enabling rate limiting on an interface2-129
enabling trust on an interface2-130
establishing binding configuration2-125
renew binding database2-232
store generated bindings2-126
diagnostic test
display module-based results2-247
displaying error disable recovery2-262
displaying inline power status2-363
displaying monitoring activity2-57
displaying SEEPROM information
GBIC2-269
displaying SPAN session information2-392, 2-455
document conventionsxvi
document organizationxv
DOS attack
protecting system's resources2-113
drop threshold, Layer 2 protocol tunneling2-159
DSCP rewrite for IP packets
enable2-223
duplex mode
configuring autonegotiation on an interface2-93
configuring full duplex on an interface2-93
configuring half duplex on an interface2-93
dynamic ARP inspection
preventing2-113
Dynamic Buffer Limiting
Dynamic Host Configuration Protocol
E
EAP
restarting authentication process2-84
enabling
debugging for UDLD2-75
voice VLANs2-457
environmental
alarms2-258
displaying information2-258
status2-258
temperature2-258
error disable detection
enabling error disable detection2-95
error-disabled state
displaying2-285
error disable recovery
configuring recovery mechanism variables2-97
displaying recovery timer information2-262
enabling ARP inspection timeout2-97
specifying recovery cause2-97
EtherChannel
assigning interfaces to EtherChannel groups2-14
debugging EtherChannel2-49
debugging PAgP shim2-49
debugging spanning tree activities2-66
displaying information for a channel2-263
removing interfaces from EtherChannel groups2-14
EtherChannel guard
detecting STP misconfiguration2-424
Explicit Host Tracking
clearing the database2-32
displaying host membership2-312
enabling per-VLAN2-142
expressions
matching multiple expression occurrences1-9
multiple-character patterns1-8
multiplying pattern occurrence1-10
single-character patterns1-7
Extensible Authentication Protocol
F
field replaceable unit (FRU)
displaying status information2-258
Flash memory file system
displaying file system information2-243
verifying checksum2-493
flow control
configuring a gigabit interface for pause frames2-100
displaying per-interface statistics for flow control2-267
G
GBIC
displaying SEEPROM information2-269
Gigabit Ethernet interface
clearing the hardware logic2-23
global configuration mode
using1-5
H
hardware module
resetting a module by toggling the power2-103
host membership on an interface
displaying information2-312
hot standby protocol
debugging2-45
disabling debugging2-45
limiting output2-45
I
IDPROMs
displaying SEEPROM information
chassis2-269
clock module2-269
fan trays2-269
module2-269
mux buffer2-269
power supplies2-269
supervisor engine2-269
ifIndex persistence
clearing SNMP ifIndex commands2-413
compress SNMP ifIndex table format2-418
disabling globally2-417
disabling on an interface2-414
enabling globally2-417
enabling on an interface2-414
IGMP
applying filters for host joining on Layer 2 interfaces2-133
clearing IGMP group cache entries2-30
configuring frequency for IGMP host-query messages2-136
creating an IGMP profile2-135
displaying IGMP interface configuration information2-306
displaying profiles2-307
setting maximum group numbers2-134
IGMP profiles
displaying2-307
IGMP snooping
clearing the EHT database2-32
configuring a Layer 2 interface as a group member2-146
configuring a Layer 2 interface as a multicast router2-144
configuring a static VLAN interface2-146
displaying host membership2-312
displaying multicast information2-314
displaying VLAN information2-308, 2-315
enabling2-137
enabling immediate-leave processing2-143
enabling on a VLAN2-141
enabling per-VLAN Explicit Host Tracking2-142
informs
enabling2-415
inline power
displaying inline power status2-363
inspection log
clearing log buffer2-26
interface
displaying suppressed multicast bytes2-279
interface capabilities
displaying2-276
interface configuration mode
summary1-5
interface link
display cable disconnect time2-282
interfaces
configuring dot1q tunnel ports2-462
creating an interface-range macro2-77
debugging output of interface related activities2-44
displaying description2-281
displaying error-disabled state2-285
displaying information when tunneling is enabled2-329
displaying status2-281
displaying traffic for a specific interface2-274
executing a command on multiple ports in a range2-108
setting a CoS value for Layer 2 packets2-158
setting drop threshold for Layer 2 packets2-159
setting the interface type2-462
interface speed
configuring interface speed2-451
interface transceiver
displaying diagnostic data2-288
internal VLAN allocation
configuring2-503
default setting2-503
displaying allocation information2-403
Internet Group Management Protocol
IP ARP
applying ARP ACL to VLAN2-111
clearing inspection statistics2-27
clearing status of log buffer2-26
controlling packet logging2-121
enabling dynamic inspection2-120
limit rate of incoming requests2-113
set per-port config trust state2-117
showing status of dynamic ARP inspection2-295
showing status of log buffer2-298
IPC
debugging IPC activities2-52
IP DHCP Snooping
IP header validation
disabling2-154
enabling2-154
IP multicast
displaying multicast routing table information2-319
IP packets
enable DSCP rewrite2-223
IP phone and standard desktop
enabling Cisco-recommended features2-174
IP source binding
adding or deleting2-151
displaying bindingstagging2-324
IP source guard
debugging messages2-55
displaying configuration and filters2-325
enabling on DHCP snooping2-155
J
Jumbo frames
enabling jumbo frames2-186
L
l2protocol-tunnel cos command2-158
LACP
deselecting channeling protocol2-16
enabling LACP on an interface2-16
setting channeling protocol2-16
Layer 2
displaying ACL configuration2-335
Layer 2 interface type
specifying a nontrunking, nontagged single VLAN interface2-462
specifying a trunking VLAN interface2-462
Layer 2 protocol ports
displaying2-329
Layer 2 protocol tunneling error recovery2-160
Layer 2 switching
enabling voice VLANs2-457
modifying switching characteristics2-457
Layer 2 traceroute
IP addresses2-481
Layer 3 switching
displaying port status2-286
displaying status of native VLAN tagging2-286
log buffer
show status2-298
logging
ip arp inspection vlan command2-121
M
MAC Access Control Lists
MAC ACLs
defining extended MAC access list2-163
displaying MAC ACL information2-400
naming an ACL2-163
MAC address filtering
configuring2-170
disabling2-170
enabling2-170
MAC address table
adding static entries2-180
clearing dynamic entries2-36
configuring aging time2-166
displaying dynamic table entry information2-340
displaying entry count2-339
displaying information2-336
displaying interface-based information2-342
displaying multicast information2-344
displaying protocol-based information2-346
displaying static table entry information2-348
displaying the MAC address aging time2-338
displaying VLAN-based information2-350
learning in the protocol buckets2-167
removing static entries2-180
MAC address tables
adding static entries2-170
deleting secure or specific addresses2-38
disabling IGMP snooping on static MAC addresses2-170
removing static entries2-170
mac-address-table static2-170
MAC address unicast filtering
dropping unicast traffic2-170
macro keywords
help strings2-2
mapping secondary VLANs to MST instance2-207
mapping VLAN(s) to an MST instance2-104
match subcommand
accessing2-18
maximum transmission unit (MTU)
displaying the system MTU setting2-393
setting the maximum Layer 2 payload size2-477
MD5
verifying MD5 signature2-493
message digest 5
MFIB
clearing ip mfib counters2-33
clearing ip mfib fastdrop2-34
displaying all active MFIB routes2-316
displaying MFIB fastdrop table entries2-318
enabling IP MFIB fastdrops2-148
modes
access-group2-5
show access-group interface2-239
switching between PVST+, MST, and Rapid PVST2-429
module password clearing2-22
module reset
resetting a module by toggling the power2-103
--More-- prompt
filter1-6
search1-7
MST
designating the primary and secondary root2-437
displaying MST protocol information2-389
displaying region configuration information2-389
displaying spanning tree information2-389
entering MST configuration submode2-431
setting configuration revision number2-234
setting path cost and port priority for instances2-430
setting the forward delay timer for all instances2-433
setting the hello-time delay timer for all instances2-434
setting the max-age timer for all instances2-435
setting the MST region name2-187
specifying the maximum number of hops2-436
switching between PVST+ and Rapid PVST2-429
using the MST configuration submode revision command2-234
using the submode name command2-187
MTU
displaying global MTU settings2-393
multicast
enabling storm control2-456
multicast/unicast packets
prevent forwarding2-461
Multicast Forwarding Information Base
multiple-character patterns1-8
multiple hosts on authorized port2-85
Multiple Spanning Tree
N
native VLAN
controlling tagging of traffic2-473
displaying ports eligible for native tagging2-402
displaying ports eligible for tagging2-402
enabling tagging on 802.1Q trunk ports2-501
specifing the tagging of traffic2-474
NetFlow
enabling NetFlow statistics2-149
including infer fields in routing statistics2-149
next-hop
displaying CEF VLAN information2-299
no form of a command, using1-6
NVRAM
debugging NVRAM activities2-58
O
output
pattern searches1-7
P
packet forwarding
prevent unknown packets2-461
packet memory failure
direct switch action upon detection2-80
packet memory test
bootup, displaying results2-251
ongoing, displaying results2-253
PACL
access-group mode2-5
paging prompt
PAgP
clearing port channel information2-37
debugging PAgP activity2-59
deselecting channeling protocol2-16
displaying port channel information2-356
hot standby mode
returning to defaults2-189
selecting ports2-189
input interface of incoming packets
learning2-188
returning to defaults2-188
setting channeling protocol2-16
parentheses1-10
password
clearing on an intelligent line module2-22
establishing enhanced password security2-492
setting username2-492
PBR
PM activities
debugging2-62
disabling debugging2-62
Policy Based Routing
Port Aggregation Protocol
port-based authentication
displaying debug messages2-48
displaying statistics and status2-255
enabling 802.1X2-86
manual control of authorization state2-86
multiple hosts on authorized port2-85
periodic re-authentication
enabling2-89
re-authenticating 802.1X-enabled ports2-88
switch-to-client frame-retransmission number2-84
port channel
accessing2-107
creating2-107
displaying information2-356
load distribution method
resetting to defaults2-194
setting2-194
port range
executing2-108
port security
debugging ports security2-63
deleting secure or specific addresses2-38
enabling2-464
filter source IP and MAC addresses2-155
setting action upon security violation2-464
setting the rate limit for bad packets2-464
sticky port2-464
Port Trust Device
displaying2-370
power status
displaying inline power2-363
displaying power status2-363
power supply
configuring combined and redundant power on the Catalyst 4507R2-200
configuring inline power2-197
configuring power consumption2-199
configuring power redundancy on the Catalyst 4507R2-202
displaying the SEEPROM2-269
setting inline power state2-196
Private VLAN
privileged EXEC mode, summary1-5
prompts
system1-5
protocol tunneling
configuring encapsulation rate2-160
disabling2-157
displaying port information2-329
enabling2-157
setting a CoS value for Layer 2 packets2-158
setting a drop threshold for Layer 2 packets2-159
PVLANs
configuring isolated and primary PVLANs2-203
controlling tagging of native VLAN traffic2-473
disabling sticky-ARP2-152
displaying map information for VLAN SVIs2-284
displaying PVLAN information2-405
enabling interface configuration mode2-462
enabling sticky-ARP2-152
mapping VLANs to the same SVI2-205
specifying host ports2-462
specifying promiscuous ports2-462
PVST+
switching between PVST and MST2-429
Q
QoS
account Layer 2 encapsulation2-210
attaching a policy-map to an interface2-235
automatic configuration2-10
clearing aggregate counters2-39
configuring a QoS policy map2-192
configuring auto2-10
defining a named aggregate policer2-212
defining default CoS value2-215
defining ingress CoS-to-DSCP mapping2-219
displaying aggregate policer information2-368
displaying auto configuration2-241
displaying class maps information2-246
displaying configuration information2-241
displaying configurations of policies2-359
displaying policy map information2-358
displaying QoS information2-367
displaying QoS map information2-371
enabling global configuration mode2-208
enabling per-VLAN QoS for a Layer 2 interface2-226
enabling QoS on an interface2-209
mapping DSCP values to transmit queues2-220
mapping egress DSCP-to-CoS2-220
mapping the DSCP-to-CoS value2-220
setting the mapping of policed DSCP values2-222
setting the trust state2-224
QoS CoS
configuring for tunneled Layer 2 protocol packets2-158
defining default CoS value2-215
qos dbl2-216
question command1-1
queueing information
displaying2-370
R
Rapid PVST
switching between PVST and MST2-429
re-authenticating 802.1X-enabled ports2-88
re-authentication
periodic2-89
reboots
restoring bindings across2-125
redundancy
accessing the main CPU2-227
changing from active to standby supervisor engine2-228
displaying information2-373
displaying redundancy facility information2-373
displaying RF client list2-373
displaying RF operational counters2-373
displaying RF states2-373
enabling automatic synchronization2-13
forcing switchover to standby supervisor engine2-228
synchronizing the route processor configurations2-180
related documentationxv
remote SPAN
renew commands
ip dhcp snooping database2-232
resetting PVLAN trunk
setting switchport to trunk2-462
ROM monitor mode
summary1-6
root guard
displaying root inconsistency status2-384
Route Processor Redundancy
RSPAN
converting VLAN to RSPAN VLAN2-231
displaying list2-407
S
saving configuration changes1-11
secure ports, limitations2-465
show commands
filtering parameters1-7
searching and filtering1-6
show dot1x command2-255
show errdisable detect command2-261
show interfaces capabilities command2-276
show interfaces transceiver command2-288
show ip arp inspection command2-295
show ip arp inspection log command2-298
show l2protocol-tunnel command2-329
show platform commands1-11
show port security command2-361
show qos interface command2-370
show vlan remote-span2-407
Simple Network Management Protocol
single-character patterns
special characters1-7
slaveslot0
displaying information on the standby supervisor2-380
slot0
displaying information about the system2-382
SMF
debugging address insertions and deletions2-65
SNMP
debugging spanning tree activities2-66
ifIndex persistence
clearing SNMP ifIndex commands2-413
compress SNMP ifIndex table format2-418
disabling globally2-417
disabling on an interface2-414
enabling globally2-417
enabling on an interface2-414
informs
disabling2-415
enabling2-415
traps
configuring to send when storm occurs2-454
disabling2-415
enabling2-415
software MAC filter
SPAN
configuring a session to monitor2-182
SPAN commands
displaying SPAN session information2-392, 2-455
SPAN enhancements
displaying status2-354
spanning-tree mode command2-429
Spanning Tree Protocol
SPAN session
displaying session information2-354
specifing encap type2-182
turning off host learning based on ingress packets2-182
special characters
anchoring, table1-10
standard desktop
enabling Cisco-recommended features2-172
standard desktop and Cisco IP phone
enabling Cisco-recommended features2-174
sticky-ARP
disabling on PVLANs2-152
enabling on PVLANs2-152
sticky port
deleting2-38
enabling security2-464
storm control
configuring for action when storm occurs2-454
disabling suppression mode2-261
displaying settings2-391
enabling2-454
enabling broadcast2-454, 2-456
enabling multicast2-454, 2-456
enabling suppression mode2-261
enabling timer to recover from error disable2-97
multicast, enabling2-456
setting high and low levels2-454
setting suppression level2-261
STP
configuring link type for a port2-427
configuring tunneling encapsulation rate2-160
debugging all activities2-66
debugging spanning tree activities2-66
debugging spanning tree BackboneFast events2-67
debugging spanning tree UplinkFast2-70
detecting misconfiguration2-424
displaying active interfaces only2-384
displaying BackboneFast status2-384
displaying bridge status and configuration2-384
displaying default path cost method2-384
displaying spanning tree debug messages2-66
displaying status information2-384
displaying status per VLAN2-384
displaying summary of interface information2-384
displaying UplinkFast status2-384
enabling BPDU filtering by default on all PortFast ports2-442
enabling BPDU filtering on an interface2-420
enabling BPDU guard by default on all PortFast ports2-444
enabling BPDU guard on an interface2-422
enabling extended system ID2-425
enabling loop guard as a default on all ports2-428
enabling PortFast by default on all access ports2-445
enabling PortFast mode2-440
enabling protocol tunneling for2-157
enabling root guard2-426
enabling spanning tree BackboneFast2-419
enabling spanning tree on a per VLAN basis2-449
enabling spanning tree UplinkFast2-447
setting an interface priority2-446
setting drop threshold for2-159
setting pathcost2-423
setting the default pathcost calculation method2-439
subinterface configuration mode, summary1-6
SVI
creating a Layer 3 interface on a VLAN2-110
switchport2-474
switchport block command2-461
switchport interfaces
displaying status of Layer 3 port2-286
displaying status of native VLAN tagging2-286
switchport mode command2-462
switchport port-security aging command2-468
switchport port-security command2-464
switch shim
debugging2-68
disabling debugging2-68
switch to router connection
enabling Cisco-recommended features2-176
switch to switch connection
enabling Cisco-recommended features2-178
switch virtual interface
sw-vlan2-71
system prompts1-5
T
Tab key
command completion1-1
tables
characters with special meaning1-7
mac access-list extended subcommands2-163
match syntax description2-19
multipliers1-9
relationship between duplex and speed commands2-452
show vlan command output fields2-405
show vtp command output fields2-410
special characters1-9
special characters used for anchoring1-10
speed command options2-451
TAC
displaying information useful to TAC2-394
TCAM
debugging spanning tree activities2-66
temperature readings
displaying information2-258
timer information2-262
traffic shaping
enable on an interface2-237
traps, enabling2-415
trunk encapsulation
setting format2-474
trunk interfaces
displaying trunk interfaces information2-293
trust state
setting2-117
tunnel ports
displaying information about Layer 2 protocol2-329
TX queues
allocating bandwidth2-484
returning to default values2-484
setting priority to high2-484
specifying burst size2-484
specifying traffic rate2-484
U
UDLD
enabling by default on all fiber interfaces2-486
enabling on an individual interface2-488
preventing a fiber interface from being enabled2-488
resetting all shutdown ports2-490
setting the message timer2-486
Unidirectional Link Detection
unknown multicast traffic, preventing2-461
unknown unicast traffic, preventing2-461
user EXEC mode, summary1-5
username
setting password and privilege level2-492
V
VACLs
access-group mode2-5
applying VLAN access maps2-502
displaying VLAN access map information2-400
specifying an action in a VLAN access map2-6
specifying the match clause for a VLAN access-map sequence2-181
using a VLAN filter2-502
VLAN
applying an ARP ACL2-111
configuring2-495
converting to RSPAN VLAN2-231
displaying CEF information2-299
displaying CEF next-hop information2-299
displaying information on switch interfaces2-308
displaying information on VLAN switch interfaces2-315
displaying information sorted by group IP address2-308
displaying IP address and version information2-308
displaying Layer 2 VLAN information2-397
displaying statistical information2-352
displaying VLAN information2-399
enabling dynamic ARP inspection2-120
enabling Explicit Host Tracking2-142
enabling guest per-port2-81
entering VLAN configuration mode2-499
native frames
enabling tagging on all 802.1Q trunk ports2-501
pruning the list for VTP2-474
setting the list of allowed2-474
VLAN Access Control Lists
VLAN access map
VLAN database
resetting2-233
VLAN debugging
limiting output2-47
VLAN manager
debugging2-71
disabling debugging2-71
IOS file system error tests
debugging2-72
disabling debugging2-72
VLAN Query Protocol
VLAN query protocol (VQPC)
debugging2-76
VLANs
clearing
counters2-40
clearing hardware logic2-24
configuring
internal allocation scheme2-503
displaying
internal VLAN allocation information2-403
RSPAN VLANs2-407
entering VLAN configuration mode2-499
VMPS
configuring servers2-507
reconfirming dynamic VLAN assignments2-505
vmps reconfirm (global configuration) command2-504
vmps reconfirm (privileged EXEC) command2-505
vmps retry command2-506
vmps server command2-507
voice VLANs
enabling2-457
VoIP
configuring auto-QoS2-10
VQP
per-server retry count2-506
reconfirming dynamic VLAN assignments2-505
VTP
configuring the administrative domain name2-511
configuring the device in VTP client mode2-510
configuring the device in VTP server mode2-514
configuring the device in VTP transparent mode2-515
configuring tunnel encapsulation rate2-160
creating a VTP domain password2-512
displaying domain information2-409
displaying statistics information2-409
enabling protocol tunneling for2-157
enabling pruning in the VLAN database2-513
enabling VTP version 2 mode2-516
modifying the VTP configuration storage file name2-509
set drop threshold for2-159
VTP protocol code
activating debug messages2-74
deactivating debug messages2-74
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