- 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 shape
- show access-group mode interface through show vtp
- snmp ifindex clear through vtp v2-mode
- Acronyms
- Acknowledgements 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 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
Numerics
10-Gigabit Ethernet uplink
selecting 2-105
showing the mode 2-291
802.1Q trunk ports and native VLANs 2-533
802.1Q tunnel ports
configuring 2-492
802.1S Multiple Spanning Tree
802.1X Port Based Authentication
allowing multiple hosts on a port 2-86
debugging 802.1X Port Based Authentication 2-49
displaying port based authentication 2-277
enabling accounting for authentication sessions 2-3
enabling authentication on the system 2-91
enabling guest VLAN 2-82
enabling manual control of auth state 2-87
enabling periodic re-authentication of the client 2-90
initializing re-authentication of dot1x ports 2-89
initializing state machines 2-83
receive session termination message upon reboot 2-4
setting maximum number for EAP requests 2-85
A
abbreviating commands
context-sensitive help 1-1
Access Gateway Module
connecting to a module 2-11
connecting to a remote module 2-243
connecting to a specific remote module 2-249
access-group
displaying mac interface 2-364
show mode interface 2-253
access groups
IP 2-5
access lists
clearing an access template 2-26
defining ARP 2-10
displaying ARP information 2-256
See also ACLs, MAC ACLs, and VACLs
access maps
applying with VLAN filter 2-534
ACLs
access-group mode 2-5
determining ACL hardware programming 2-6
displaying mac access-group interface 2-364
using ACL naming conventions for MAC ACLs 2-170
action clause
specifying drop or forward action in a VACL 2-8
adjacency
debugging the adjacency table 2-43
disabling the debug facility 2-43
displaying information about the adjacency table 2-254
displaying IPC table entries 2-43
aggregate policer
displaying information 2-397
aging time
displaying MAC address aging time 2-367
MAC address table 2-173
alarms
displaying operational status 2-280
alternation
description 1-9
anchoring
description 1-10
ARP
access list, displaying detailed information 2-256
defining access-lists 2-10
ARP inspection
enforce certain types of checking 2-122
ARP packet
deny based on DHCP bindings 2-79
permit based on DHCP bindings 2-203
authentication
setting username 2-524
using an MD5-type encryption method 2-524
verifying MD5 signature 2-525
verifying the checksum for Flash memory 2-525
authorization state
enabling manual control 2-87
authorization state of a controlled port 2-87
automatic installation
displaying status 2-257
auto-negotiate interface speed
example 2-483
auto-QoS
configuring for VoIP 2-12
displaying configuration 2-258
B
baby giants
displaying the system MTU setting 2-423
setting the maximum Layer 2 payload size 2-509
BackboneFast
displaying debugging messages 2-68
displaying spanning tree status 2-413
enabling debugging 2-68
bindings
store for DHCP snooping 2-130
BOOT environment variable
displaying information 2-262
bootflash
displaying information 2-260
BPDUs
debugging spanning tree activities 2-67
bridge protocol data units
broadcast suppression level
C
Catalyst 4507R 2-213
power redundancy mode 2-215
CDP
configuring tunneling encapsulation rate 2-166
displaying
neighbor information 2-263
enabling protocol tunneling for 2-162
set drop threshold for 2-164
CEF
displaying next-hop information 2-324
displaying VLAN configuration information 2-324
cisco-desktop
macro apply 2-179
Cisco Express Forwarding
cisco-phone
macro apply 2-181
cisco-router
macro apply 2-183
cisco-switch
macro apply 2-185
clear commands
clearing Gigabit Ethernet interfaces 2-24
clearing IGMP group cache entries 2-31
clearing interface counters 2-21
clearing IP access lists 2-26, 2-27
clearing IP ARP inspection statistics VLAN 2-28
clearing IP DHCP snooping database 2-29
clearing IP DHCP snooping database statistics 2-30
clearing MFIB counters and routes 2-34
clearing MFIB fastdrop entries 2-35
clearing PAgP channel information 2-38
clearing QoS aggregate counters 2-40
clearing VLAN interfaces 2-25
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 2-45
condition vlan
debugging VLAN output 2-48
configuration, saving 1-11
configuring
root as secondary 2-467
configuring a SPAN session to monitor
limit SPAN source traffic 2-195
configuring forward delay 2-463
configuring root as primary 2-467
CoS
assigning to Layer 2 protocol packets 2-163
CoS QoS default
defining value on an interface 2-228
Cost of Service
counters
clearing interface counters 2-21
D
DAI
clear statistics 2-28
DBL
displaying qos dbl 2-398
enabling DBL globally on the switch 2-229
debug commands
debugging backup events 2-44
debugging DHCP snooping events 2-54
debugging DHCP snooping messages 2-55
debugging EtherChannel/PAgP/shim 2-50
debugging IPC activity 2-53
debugging IP DHCP snooping security messages 2-56
debugging NVRAM activities 2-59
debugging PAgP activities 2-60
debugging port manager activities 2-63
debugging software MAC filter updates 2-66
debugging spanning tree activities 2-67
debugging spanning tree backbonefast 2-68
debugging spanning tree UplinkFast 2-71
debugging supervisor redundancy 2-65
debugging VLAN manager activities 2-72
displaying monitor activity 2-58
displaying the adjacency table 2-43
enabling debug dot1x 2-49
enabling debugging messages for ISL VLAN IDs 2-74
enabling debugging messages for VTP 2-75
enabling debugging of UDLD activity 2-76
enabling switch shim debugging 2-69
enabling VLAN manager file system error tests 2-73
limiting debugging output for VLANs 2-48
limiting interface debugging output 2-45
limiting output for debugging standby state changes 2-46
shortcut to the debug condition interface 2-52
debugging
activity monitoring 2-58
DHCP snooping events 2-54
DHCP snooping packets 2-55
IPC activities 2-53
IP DHCP snooping security packets 2-56
NVRAM activities 2-59
PAgP activities 2-60
PAgP shim 2-50
PM activities 2-63
SMF address insertions and deletions 2-66
spanning tree BackboneFast events 2-68
spanning tree switch shim 2-69
spanning tree UplinkFast events 2-71
VLAN manager activities 2-72
VLAN manager IOS file system error tests 2-73
VTP protocol debug messages 2-75
debug spanning tree switch 2-69
debug sw-vlan vtp 2-75
default CoS value 2-228
default form of a command, using 1-6
defining egress DSCP-to-CoS mapping 2-233
DHCP
clearing database statistics 2-30
DHCP bindings
configuring bindings 2-129
deny ARP packet based on matches 2-79
permit ARP packet based on matches 2-203
DHCP snooping
clearing database 2-29
displaying 2-325
displaying binding table 2-326
displaying status of DHCP database 2-329
displaying status of error detection 2-283
enabling DHCP globally 2-128
enabling IP source guard 2-160
enabling on a VLAN 2-135
enabling option 82 2-132
enabling rate limiting on an interface 2-133
enabling trust on an interface 2-134
establishing binding configuration 2-129
renew binding database 2-245
store generated bindings 2-130
diagnostic test
displaying attributes 2-267
display module-based results 2-269
displaying error disable recovery 2-284
displaying inline power status 2-392
displaying monitoring activity 2-58
displaying SEEPROM information
GBIC 2-292
displaying SPAN session information 2-422, 2-485
document conventions xvi
document organization xv
DOS attack
protecting system's resources 2-117
drop threshold, Layer 2 protocol tunneling 2-164
DSCP rewrite for IP packets
enable 2-236
dual-capable port
selecting a connector 2-192
duplex mode
configuring autonegotiation on an interface 2-94
configuring full duplex on an interface 2-94
configuring half duplex on an interface 2-94
dynamic ARP inspection
preventing 2-117
Dynamic Buffer Limiting
Dynamic Host Configuration Protocol
E
EAP
restarting authentication process 2-85
enabling
debugging for UDLD 2-76
voice VLANs 2-487
environmental
alarms 2-280
displaying information 2-280
status 2-280
temperature 2-280
error disable detection
enabling error disable detection 2-96
error-disabled state
displaying 2-310
error disable recovery
configuring recovery mechanism variables 2-98
displaying recovery timer information 2-284
enabling ARP inspection timeout 2-98
specifying recovery cause 2-98
EtherChannel
assigning interfaces to EtherChannel groups 2-16
debugging EtherChannel 2-50
debugging PAgP shim 2-50
debugging spanning tree activities 2-67
displaying information for a channel 2-285
removing interfaces from EtherChannel groups 2-16
EtherChannel guard
detecting STP misconfiguration 2-454
Explicit Host Tracking
clearing the database 2-33
enabling per-VLAN 2-147
expressions
matching multiple expression occurrences 1-9
multiple-character patterns 1-8
multiplying pattern occurrence 1-10
single-character patterns 1-7
Extensible Authentication Protocol
F
field replaceable unit (FRU)
displaying status information 2-280
Flash memory file system
displaying file system information 2-260
verifying checksum 2-525
flow control
configuring a gigabit interface for pause frames 2-101
displaying per-interface statistics for flow control 2-289
G
GBIC
displaying SEEPROM information 2-292
Gigabit Ethernet interface
clearing the hardware logic 2-24
Gigabit Ethernet uplink
selecting 2-105
showing the mode 2-291
global configuration mode
using 1-5
H
hardware module
resetting a module by toggling the power 2-104
hardware uplink
selecting the mode 2-105
showing the mode 2-291
helper addresses, IP 2-343
hot standby protocol
debugging 2-46
disabling debugging 2-46
limiting output 2-46
I
IDPROMs
displaying SEEPROM information
chassis 2-292
clock module 2-292
fan trays 2-292
module 2-292
mux buffer 2-292
power supplies 2-292
supervisor engine 2-292
ifIndex persistence
clearing SNMP ifIndex commands 2-443
compress SNMP ifIndex table format 2-448
disabling globally 2-447
disabling on an interface 2-444
enabling globally 2-447
enabling on an interface 2-444
IGMP
applying filters for host joining on Layer 2 interfaces 2-137
clearing IGMP group cache entries 2-31
configuring frequency for IGMP host-query messages 2-140
creating an IGMP profile 2-139
displaying IGMP interface configuration information 2-331
displaying profiles 2-333
setting maximum group numbers 2-138
IGMP profiles
displaying 2-333
IGMP snooping
clearing the EHT database 2-33
configuring a Layer 2 interface as a group member 2-151
configuring a Layer 2 interface as a multicast router 2-149
configuring a static VLAN interface 2-151
displaying multicast information 2-340
displaying VLAN information 2-334, 2-338, 2-341
enabling 2-142
enabling immediate-leave processing 2-148
enabling on a VLAN 2-146
enabling per-VLAN Explicit Host Tracking 2-147
informs
enabling 2-445
inline power
displaying inline power status 2-392
inspection log
clearing log buffer 2-27
interface
displaying suppressed multicast bytes 2-304
interface capabilities
displaying 2-301
interface configuration mode
summary 1-5
interface link
display cable disconnect time 2-307
interfaces
configuring dot1q tunnel ports 2-492
creating an interface-range macro 2-78
debugging output of interface related activities 2-45
displaying description 2-306
displaying error-disabled state 2-310
displaying information when tunneling is enabled 2-358
displaying status 2-306
displaying traffic for a specific interface 2-298
entering interface configuration mode 2-109
executing a command on multiple ports in a range 2-112
selecting an interface to configure 2-109
setting a CoS value for Layer 2 packets 2-163
setting drop threshold for Layer 2 packets 2-164
setting the interface type 2-492
interface speed
configuring interface speed 2-481
interface transceiver
displaying diagnostic data 2-313
internal VLAN allocation
configuring 2-535
default setting 2-535
displaying allocation information 2-434
Internet Group Management Protocol
IP ARP
applying ARP ACL to VLAN 2-115
clearing inspection statistics 2-28
clearing status of log buffer 2-27
controlling packet logging 2-125
enabling dynamic inspection 2-124
limit rate of incoming requests 2-117
set per-port config trust state 2-121
showing status of dynamic ARP inspection 2-320
showing status of log buffer 2-323
IPC
debugging IPC activities 2-53
IP DHCP Snooping
IP header validation
disabling 2-159
enabling 2-159
IP interfaces
displaying usability status 2-342
IP multicast
displaying multicast routing table information 2-348
IP packets
enable DSCP rewrite 2-236
IP phone and standard desktop
enabling Cisco-recommended features 2-181
IP source binding
adding or deleting 2-156
displaying bindingstagging 2-353
IP source guard
debugging messages 2-56
displaying configuration and filters 2-354
enabling on DHCP snooping 2-160
J
Jumbo frames
enabling jumbo frames 2-199
L
LACP
deselecting channeling protocol 2-18
enabling LACP on an interface 2-18
setting channeling protocol 2-18
Layer 2
displaying ACL configuration 2-364
Layer 2 interface type
specifying a nontrunking, nontagged single VLAN interface 2-492
specifying a trunking VLAN interface 2-492
Layer 2 protocol ports
displaying 2-358
Layer 2 protocol tunneling error recovery 2-166
Layer 2 switching
enabling voice VLANs 2-487
modifying switching characteristics 2-487
Layer 2 traceroute
IP addresses 2-513
Layer 3 switching
displaying information about an adjacency table 2-254
displaying port status 2-311
displaying status of native VLAN tagging 2-311
log buffer
show status 2-323
logging
controlling IP ARP packets 2-125
M
MAC Access Control Lists
MAC ACLs
defining extended MAC access list 2-170
displaying MAC ACL information 2-431
naming an ACL 2-170
MAC address filtering
configuring 2-177
disabling 2-177
enabling 2-177
MAC address table
adding static entries 2-187
clearing dynamic entries 2-37
configuring aging time 2-173
displaying dynamic table entry information 2-369
displaying entry count 2-368
displaying information 2-365
displaying interface-based information 2-371
displaying multicast information 2-373
displaying protocol-based information 2-375
displaying static table entry information 2-377
displaying the MAC address aging time 2-367
displaying VLAN-based information 2-379
learning in the protocol buckets 2-174
removing static entries 2-187
MAC address tables
adding static entries 2-177
deleting secure or specific addresses 2-39
disabling IGMP snooping on static MAC addresses 2-177
removing static entries 2-177
mac-address-table static 2-177
MAC address unicast filtering
dropping unicast traffic 2-177
macro keywords
help strings 2-2
mapping secondary VLANs to MST instance 2-220
mapping VLAN(s) to an MST instance 2-107
match subcommand
accessing 2-19
maximum transmission unit (MTU)
displaying the system MTU setting 2-423
setting the maximum Layer 2 payload size 2-509
MD5
verifying MD5 signature 2-525
message digest 5
MFIB
clearing ip mfib counters 2-34
clearing ip mfib fastdrop 2-35
displaying all active MFIB routes 2-345
displaying MFIB fastdrop table entries 2-347
enabling IP MFIB fastdrops 2-153
modes
access-group 2-5
show access-group interface 2-253
switching between PVST+, MST, and Rapid PVST 2-459
module password clearing 2-23
module reset
resetting a module by toggling the power 2-104
--More-- prompt
filter 1-6
search 1-7
MST
designating the primary and secondary root 2-467
displaying MST protocol information 2-418
displaying region configuration information 2-418
displaying spanning tree information 2-418
entering MST configuration submode 2-461
setting configuration revision number 2-247
setting path cost and port priority for instances 2-460
setting the forward delay timer for all instances 2-463
setting the hello-time delay timer for all instances 2-464
setting the max-age timer for all instances 2-465
setting the MST region name 2-200
specifying the maximum number of hops 2-466
switching between PVST+ and Rapid PVST 2-459
using the MST configuration submode revision command 2-247
using the submode name command 2-200
MTU
displaying global MTU settings 2-423
multicast
enabling storm control 2-486
multicast/unicast packets
prevent forwarding 2-491
Multicast Forwarding Information Base
multiple-character patterns 1-8
multiple hosts on authorized port 2-86
Multiple Spanning Tree
N
native VLAN
controlling tagging of traffic 2-505
displaying ports eligible for native tagging 2-433
displaying ports eligible for tagging 2-433
enabling tagging on 802.1Q trunk ports 2-533
specifing the tagging of traffic 2-506
NetFlow
enabling NetFlow statistics 2-154
including infer fields in routing statistics 2-154
next-hop
displaying CEF VLAN information 2-324
no form of a command, using 1-6
NVRAM
debugging NVRAM activities 2-59
O
output
pattern searches 1-7
P
packet forwarding
prevent unknown packets 2-491
packet memory failure
direct switch action upon detection 2-81
packet memory test
bootup, displaying results 2-273
ongoing, displaying results 2-275
PACL
access-group mode 2-5
paging prompt
PAgP
clearing port channel information 2-38
debugging PAgP activity 2-60
deselecting channeling protocol 2-18
displaying port channel information 2-385
hot standby mode
returning to defaults 2-202
selecting ports 2-202
input interface of incoming packets
learning 2-201
returning to defaults 2-201
setting channeling protocol 2-18
parentheses 1-10
password
clearing on an intelligent line module 2-23
establishing enhanced password security 2-524
setting username 2-524
PBR
PM activities
debugging 2-63
disabling debugging 2-63
Policy Based Routing
port, dual-capable
selecting the connector 2-192
Port Aggregation Protocol
port-based authentication
displaying debug messages 2-49
displaying statistics and status 2-277
enabling 802.1X 2-87
manual control of authorization state 2-87
multiple hosts on authorized port 2-86
periodic re-authentication
enabling 2-90
re-authenticating 802.1X-enabled ports 2-89
switch-to-client frame-retransmission number 2-85
port channel
accessing 2-111
creating 2-111
displaying information 2-385
load distribution method
resetting to defaults 2-207
setting 2-207
port range
executing 2-112
port security
debugging ports security 2-64
deleting secure or specific addresses 2-39
displaying settings for an interface or switch 2-390
enabling 2-494
filter source IP and MAC addresses 2-160
setting action upon security violation 2-494
setting the rate limit for bad packets 2-494
sticky port 2-494
Port Trust Device
displaying 2-399
power status
displaying inline power 2-392
displaying power status 2-392
power supply
configuring combined and redundant power on the Catalyst 4507R 2-213
configuring inline power 2-210
configuring power consumption 2-212
configuring power redundancy on the Catalyst 4507R 2-215
displaying the SEEPROM 2-292
setting inline power state 2-209
Private VLAN
privileged EXEC mode, summary 1-5
prompts
system 1-5
protocol tunneling
configuring encapsulation rate 2-166
disabling 2-162
displaying port information 2-358
enabling 2-162
setting a CoS value for Layer 2 packets 2-163
setting a drop threshold for Layer 2 packets 2-164
PVLANs
configuring isolated, primary, and community PVLANs 2-216
controlling tagging of native VLAN traffic 2-505
disabling sticky-ARP 2-157
displaying map information for VLAN SVIs 2-309
displaying PVLAN information 2-436
enabling interface configuration mode 2-492
enabling sticky-ARP 2-157
mapping VLANs to the same SVI 2-218
specifying host ports 2-492
specifying promiscuous ports 2-492
PVST+
switching between PVST and MST 2-459
Q
QoS
account Layer 2 encapsulation 2-223
attaching a policy-map to an interface 2-248
automatic configuration 2-12
clearing aggregate counters 2-40
configuring a QoS policy map 2-205
configuring auto 2-12
defining a named aggregate policer 2-225
defining default CoS value 2-228
defining ingress CoS-to-DSCP mapping 2-232
displaying aggregate policer information 2-397
displaying auto configuration 2-258
displaying class maps information 2-266
displaying configuration information 2-258
displaying configurations of policies 2-388
displaying policy map information 2-387
displaying QoS information 2-396
displaying QoS map information 2-400
enabling global configuration mode 2-221
enabling per-VLAN QoS for a Layer 2 interface 2-239
enabling QoS on an interface 2-222
mapping DSCP values to transmit queues 2-233
mapping egress DSCP-to-CoS 2-233
mapping the DSCP-to-CoS value 2-233
setting the mapping of policed DSCP values 2-235
setting the trust state 2-237
specifying flow-based match criteria 2-189
QoS CoS
configuring for tunneled Layer 2 protocol packets 2-163
defining default CoS value 2-228
qos dbl 2-229
question command 1-1
queueing information
displaying 2-399
R
Rapid PVST
switching between PVST and MST 2-459
re-authenticating 802.1X-enabled ports 2-89
re-authentication
periodic 2-90
reboots
restoring bindings across 2-129
redundancy
accessing the main CPU 2-240
changing from active to standby supervisor engine 2-241
displaying information 2-402
displaying redundancy facility information 2-402
displaying RF client list 2-402
displaying RF operational counters 2-402
displaying RF states 2-402
enabling automatic synchronization 2-15
forcing switchover to standby supervisor engine 2-241
set the mode 2-193
synchronizing the route processor configurations 2-187
related documentation xv
remote SPAN
renew commands
ip dhcp snooping database 2-245
resetting PVLAN trunk
setting switchport to trunk 2-492
rj45 connector, selecting the connector 2-192
ROM monitor mode
summary 1-6
Route Processor Redundancy
RPR
set the redundancy mode 2-193
RSPAN
converting VLAN to RSPAN VLAN 2-244
displaying list 2-438
S
saving configuration changes 1-11
secure ports, limitations 2-495
set the redundancy mode 2-193
sfp connector, selecting the connector 2-192
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
slaveslot0
displaying information on the standby supervisor 2-409
slot0
displaying information about the system 2-411
SMF
debugging address insertions and deletions 2-66
SNMP
debugging spanning tree activities 2-67
ifIndex persistence
clearing SNMP ifIndex commands 2-443
compress SNMP ifIndex table format 2-448
disabling globally 2-447
disabling on an interface 2-444
enabling globally 2-447
enabling on an interface 2-444
informs
disabling 2-445
enabling 2-445
traps
configuring to send when storm occurs 2-484
disabling 2-445
enabling 2-445
software MAC filter
SPAN commands
configuring a SPAN session to monitor 2-195
displaying SPAN session information 2-422, 2-485
SPAN enhancements
displaying status 2-383
Spanning Tree Protocol
SPAN session
displaying session information 2-383
filter ACLs 2-195
specify encap type 2-195
turn off host learning based on ingress packets 2-195
special characters
anchoring, table 1-10
SSO 2-193
standard desktop
enabling Cisco-recommended features 2-179
standard desktop and Cisco IP phone
enabling Cisco-recommended features 2-181
sticky-ARP
disabling on PVLANs 2-157
enabling on PVLANs 2-157
sticky port
deleting 2-39
enabling security 2-494
storm control
configuring for action when storm occurs 2-484
disabling suppression mode 2-283
displaying settings 2-421
enabling 2-484
enabling broadcast 2-484, 2-486
enabling multicast 2-484, 2-486
enabling suppression mode 2-283
enabling timer to recover from error disable 2-98
multicast, enabling 2-486
setting high and low levels 2-484
setting suppression level 2-283
STP
configuring link type for a port 2-457
configuring tunneling encapsulation rate 2-166
debugging all activities 2-67
debugging spanning tree activities 2-67
debugging spanning tree BackboneFast events 2-68
debugging spanning tree UplinkFast 2-71
detecting misconfiguration 2-454
displaying active interfaces only 2-413
displaying BackboneFast status 2-413
displaying bridge status and configuration 2-413
displaying spanning tree debug messages 2-67
displaying summary of interface information 2-413
enabling BPDU filtering by default on all PortFast ports 2-472
enabling BPDU filtering on an interface 2-450
enabling BPDU guard by default on all PortFast ports 2-474
enabling BPDU guard on an interface 2-452
enabling extended system ID 2-455
enabling loop guard as a default on all ports 2-458
enabling PortFast by default on all access ports 2-475
enabling PortFast mode 2-470
enabling protocol tunneling for 2-162
enabling root guard 2-456
enabling spanning tree BackboneFast 2-449
enabling spanning tree on a per VLAN basis 2-479
enabling spanning tree UplinkFast 2-477
setting an interface priority 2-476
setting drop threshold for 2-164
setting pathcost 2-453
setting the default pathcost calculation method 2-469
subinterface configuration mode, summary 1-6
SVI
creating a Layer 3 interface on a VLAN 2-114
switchport 2-506
switchport interfaces
displaying status of Layer 3 port 2-311
displaying status of native VLAN tagging 2-311
switch shim
debugging 2-69
disabling debugging 2-69
switch to router connection
enabling Cisco-recommended features 2-183
switch to switch connection
enabling Cisco-recommended features 2-185
switch virtual interface
sw-vlan 2-72
system prompts 1-5
T
Tab key
command completion 1-1
tables
characters with special meaning 1-7
mac access-list extended subcommands 2-170
match syntax description 2-20
multipliers 1-9
relationship between duplex and speed commands 2-482
show cdp neighbors detail field descriptions 2-265
show cdp neighbors field descriptions 2-264
show ip interface field descriptions 2-343
show vlan command output fields 2-437
show vtp command output fields 2-441
special characters 1-9
special characters used for anchoring 1-10
speed command options 2-189, 2-482
valid interface types 2-109
TAC
displaying information useful to TAC 2-424
TCAM
debugging spanning tree activities 2-67
temperature readings
displaying information 2-280
timer information 2-284
traffic shaping
enable on an interface 2-250
traps, enabling 2-445
trunk encapsulation
setting format 2-506
trunk interfaces
displaying trunk interfaces information 2-318
trust state
setting 2-121
tunnel ports
displaying information about Layer 2 protocol 2-358
TX queues
allocating bandwidth 2-516
returning to default values 2-516
setting priority to high 2-516
specifying burst size 2-516
specifying traffic rate 2-516
U
UDLD
displaying administrative and operational status 2-426
enabling by default on all fiber interfaces 2-518
enabling on an individual interface 2-520
preventing a fiber interface from being enabled 2-520
resetting all shutdown ports 2-522
setting the message timer 2-518
Unidirectional Link Detection
unknown multicast traffic, preventing 2-491
unknown unicast traffic, preventing 2-491
user EXEC mode, summary 1-5
username
setting password and privilege level 2-524
V
VACLs
access-group mode 2-5
applying VLAN access maps 2-534
displaying VLAN access map information 2-431
specifying an action in a VLAN access map 2-8
specifying the match clause for a VLAN access-map sequence 2-188
using a VLAN filter 2-534
VLAN
applying an ARP ACL 2-115
configuring 2-527
converting to RSPAN VLAN 2-244
displaying CEF information 2-324
displaying CEF next-hop information 2-324
displaying information on switch interfaces 2-334, 2-338
displaying information on VLAN switch interfaces 2-341
displaying information sorted by group IP address 2-334, 2-338
displaying IP address and version information 2-334, 2-338
displaying Layer 2 VLAN information 2-428
displaying statistical information 2-381
displaying VLAN information 2-430
enabling dynamic ARP inspection 2-124
enabling Explicit Host Tracking 2-147
enabling guest per-port 2-82
entering VLAN configuration mode 2-531
native frames
enabling tagging on all 802.1Q trunk ports 2-533
pruning the list for VTP 2-506
setting the list of allowed 2-506
VLAN Access Control Lists
VLAN access map
VLAN database
resetting 2-246
VLAN debugging
limiting output 2-48
VLAN manager
debugging 2-72
disabling debugging 2-72
IOS file system error tests
debugging 2-73
disabling debugging 2-73
VLAN Query Protocol
VLAN query protocol (VQPC)
debugging 2-77
VLANs
clearing
counters 2-41
clearing hardware logic 2-25
configuring
internal allocation scheme 2-535
displaying
internal VLAN allocation information 2-434
RSPAN VLANs 2-438
entering VLAN configuration mode 2-531
VMPS
configuring servers 2-539
reconfirming dynamic VLAN assignments 2-537
voice VLANs
enabling 2-487
VoIP
configuring auto-QoS 2-12
VQP
per-server retry count 2-538
reconfirming dynamic VLAN assignments 2-537
VTP
configuring the administrative domain name 2-543
configuring the device in VTP client mode 2-542
configuring the device in VTP server mode 2-546
configuring the device in VTP transparent mode 2-547
configuring tunnel encapsulation rate 2-166
creating a VTP domain password 2-544
displaying domain information 2-440
displaying statistics information 2-440
enabling protocol tunneling for 2-162
enabling pruning in the VLAN database 2-545
enabling VTP version 2 mode 2-548
modifying the VTP configuration storage file name 2-541
set drop threshold for 2-164
VTP protocol code
activating debug messages 2-75
deactivating debug messages 2-75
Feedback