- 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 2-107
showing the mode 2-299
802.1Q trunk ports and native VLANs 2-541
802.1Q tunnel ports
configuring 2-500
802.1S Multiple Spanning Tree
802.1X Port Based Authentication
allowing multiple hosts on a port 2-88
debugging 802.1X Port Based Authentication 2-50
displaying port based authentication 2-285
enabling accounting for authentication sessions 2-3
enabling authentication on the system 2-93
enabling guest VLAN 2-83
enabling guest VLAN supplicant 2-84
enabling manual control of auth state 2-89
enabling periodic re-authentication of the client 2-92
initializing re-authentication of dot1x ports 2-91
initializing state machines 2-85
receive session termination message upon reboot 2-4
setting maximum number for EAP requests 2-87
setting the reauthentication timer 2-94
A
abbreviating commands
context-sensitive help 1-1
Access Gateway Module
connecting to a module 2-11
connecting to a remote module 2-250
connecting to a specific remote module 2-258
access-group
displaying mac interface 2-372
show mode interface 2-261
access groups
IP 2-5
access lists
clearing an access template 2-27
defining ARP 2-10
displaying ARP information 2-264
See also ACLs, MAC ACLs, and VACLs
access maps
applying with VLAN filter 2-542
ACLs
access-group mode 2-5
determining ACL hardware programming 2-6
displaying mac access-group interface 2-372
using ACL naming conventions for MAC ACLs 2-174
action clause
specifying drop or forward action in a VACL 2-8
addresses, configuring a maximum 2-221
adjacency
debugging the adjacency table 2-44
disabling the debug facility 2-44
displaying information about the adjacency table 2-262
displaying IPC table entries 2-44
aggregate policer
displaying information 2-407
aging time
displaying MAC address aging time 2-375
MAC address table 2-177
alarms
displaying operational status 2-288
alternation
description 1-9
anchoring
description 1-10
ARP
access list, displaying detailed information 2-264
defining access-lists 2-10
ARP inspection
enforce certain types of checking 2-124
ARP packet
deny based on DHCP bindings 2-80
permit based on DHCP bindings 2-207
authentication
setting username 2-532
using an MD5-type encryption method 2-532
verifying MD5 signature 2-533
verifying the checksum for Flash memory 2-533
authorization state
enabling manual control 2-89
authorization state of a controlled port 2-89
automatic installation
displaying status 2-265
auto-negotiate interface speed
example 2-491
auto-QoS
configuring for VoIP 2-12
displaying configuration 2-266
B
baby giants
displaying the system MTU setting 2-431
setting the maximum Layer 2 payload size 2-517
BackboneFast
displaying debugging messages 2-69
displaying spanning tree status 2-423
enabling debugging 2-69
bindings
store for DHCP snooping 2-133
BOOT environment variable
displaying information 2-270
bootflash
displaying information 2-268
BPDUs
debugging spanning tree activities 2-68
bridge protocol data units
broadcast suppression level
C
Catalyst 4507R 2-217
power redundancy mode 2-222
CDP
configuring tunneling encapsulation rate 2-170
displaying
neighbor information 2-271
enabling protocol tunneling for 2-166
set drop threshold for 2-168
CEF
displaying next-hop information 2-332
displaying VLAN configuration information 2-332
cisco-desktop
macro apply 2-183
Cisco Express Forwarding
cisco-phone
macro apply 2-185
cisco-router
macro apply 2-187
cisco-switch
macro apply 2-189
clear commands
clearing Gigabit Ethernet interfaces 2-25
clearing IGMP group cache entries 2-32
clearing interface counters 2-22
clearing IP access lists 2-27, 2-28
clearing IP ARP inspection statistics VLAN 2-29
clearing IP DHCP snooping database 2-30
clearing IP DHCP snooping database statistics 2-31
clearing MFIB counters and routes 2-35
clearing MFIB fastdrop entries 2-36
clearing PAgP channel information 2-39
clearing QoS aggregate counters 2-41
clearing VLAN interfaces 2-26
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 2-46
condition vlan
debugging VLAN output 2-49
configuration, saving 1-11
configuring
root as secondary 2-475
configuring a SPAN session to monitor
limit SPAN source traffic 2-199
configuring forward delay 2-471
configuring root as primary 2-475
CoS
assigning to Layer 2 protocol packets 2-167
CoS QoS default
defining value on an interface 2-235
Cost of Service
counters
clearing interface counters 2-22
D
DAI
clear statistics 2-29
DBL
displaying qos dbl 2-408
enabling DBL globally on the switch 2-236
debug commands
debugging backup events 2-45
debugging DHCP snooping events 2-55
debugging DHCP snooping messages 2-56
debugging EtherChannel/PAgP/shim 2-51
debugging IPC activity 2-54
debugging IP DHCP snooping security messages 2-57
debugging NVRAM activities 2-60
debugging PAgP activities 2-61
debugging port manager activities 2-64
debugging software MAC filter updates 2-67
debugging spanning tree activities 2-68
debugging spanning tree backbonefast 2-69
debugging spanning tree UplinkFast 2-72
debugging supervisor redundancy 2-66
debugging VLAN manager activities 2-73
displaying monitor activity 2-59
displaying the adjacency table 2-44
enabling debug dot1x 2-50
enabling debugging messages for ISL VLAN IDs 2-75
enabling debugging messages for VTP 2-76
enabling debugging of UDLD activity 2-77
enabling switch shim debugging 2-70
enabling VLAN manager file system error tests 2-74
limiting debugging output for VLANs 2-49
limiting interface debugging output 2-46
limiting output for debugging standby state changes 2-47
shortcut to the debug condition interface 2-53
debugging
activity monitoring 2-59
DHCP snooping events 2-55
DHCP snooping packets 2-56
IPC activities 2-54
IP DHCP snooping security packets 2-57
NVRAM activities 2-60
PAgP activities 2-61
PAgP shim 2-51
PM activities 2-64
SMF address insertions and deletions 2-67
spanning tree BackboneFast events 2-69
spanning tree switch shim 2-70
spanning tree UplinkFast events 2-72
VLAN manager activities 2-73
VLAN manager IOS file system error tests 2-74
VTP protocol debug messages 2-76
debug spanning tree switch 2-70
debug sw-vlan vtp 2-76
default CoS value 2-235
default form of a command, using 1-6
defining egress DSCP-to-CoS mapping 2-240
DHCP
clearing database statistics 2-31
DHCP bindings
configuring bindings 2-132
deny ARP packet based on matches 2-80
permit ARP packet based on matches 2-207
DHCP snooping
clearing database 2-30
displaying binding table 2-334
displaying configuration information 2-333
displaying status of DHCP database 2-337
displaying status of error detection 2-291
enabling DHCP globally 2-131
enabling IP source guard 2-164
enabling on a VLAN 2-139
enabling option 82 2-135, 2-136
enabling rate limiting on an interface 2-137
enabling trust on an interface 2-138
establishing binding configuration 2-132
renew binding database 2-252
store generated bindings 2-133
diagnostic test
displaying attributes 2-275
display module-based results 2-277
displaying error disable recovery 2-292
displaying inline power status 2-402
displaying monitoring activity 2-59
displaying SEEPROM information
GBIC 2-300
displaying SPAN session information 2-430, 2-493
document conventions xvi
document organization xv
DOS attack
protecting system's resources 2-119
drop threshold, Layer 2 protocol tunneling 2-168
DSCP rewrite for IP packets
enable 2-243
dual-capable port
selecting a connector 2-196
duplex mode
configuring autonegotiation on an interface 2-96
configuring full duplex on an interface 2-96
configuring half duplex on an interface 2-96
dynamic ARP inspection
preventing 2-119
Dynamic Buffer Limiting
Dynamic Host Configuration Protocol
E
EAP
restarting authentication process 2-87
enabling
debugging for UDLD 2-77
voice VLANs 2-495
environmental
alarms 2-288
displaying information 2-288
status 2-288
temperature 2-288
error disable detection
enabling error disable detection 2-98
error-disabled state
displaying 2-318
error disable recovery
configuring recovery mechanism variables 2-100
displaying recovery timer information 2-292
enabling ARP inspection timeout 2-100
specifying recovery cause 2-100
EtherChannel
assigning interfaces to EtherChannel groups 2-16
debugging EtherChannel 2-51
debugging PAgP shim 2-51
debugging spanning tree activities 2-68
displaying information for a channel 2-293
removing interfaces from EtherChannel groups 2-16
EtherChannel guard
detecting STP misconfiguration 2-462
Explicit Host Tracking
clearing the database 2-34
enabling per-VLAN 2-151
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 2-288
Flash memory file system
displaying file system information 2-268
verifying checksum 2-533
flow control
configuring a gigabit interface for pause frames 2-103
displaying per-interface statistics for flow control 2-297
G
GBIC
displaying SEEPROM information 2-300
Gigabit Ethernet interface
clearing the hardware logic 2-25
Gigabit Ethernet uplink
selecting 2-107
showing the mode 2-299
global configuration mode
using 1-5
H
hardware module
resetting a module by toggling the power 2-106
hardware uplink
selecting the mode 2-107
showing the mode 2-299
helper addresses, IP 2-351
hot standby protocol
debugging 2-47
disabling debugging 2-47
limiting output 2-47
I
IDPROMs
displaying SEEPROM information
chassis 2-300
clock module 2-300
fan trays 2-300
module 2-300
mux buffer 2-300
power supplies 2-300
supervisor engine 2-300
ifIndex persistence
clearing SNMP ifIndex commands 2-451
compress SNMP ifIndex table format 2-456
disabling globally 2-455
disabling on an interface 2-452
enabling globally 2-455
enabling on an interface 2-452
IGMP
applying filters for host joining on Layer 2 interfaces 2-141
clearing IGMP group cache entries 2-32
configuring frequency for IGMP host-query messages 2-144
creating an IGMP profile 2-143
displaying IGMP interface configuration information 2-339
displaying profiles 2-341
setting maximum group numbers 2-142
IGMP profiles
displaying 2-341
IGMP snooping
clearing the EHT database 2-34
configuring a Layer 2 interface as a group member 2-155
configuring a Layer 2 interface as a multicast router 2-153
configuring a static VLAN interface 2-155
displaying multicast information 2-348
displaying VLAN information 2-342, 2-346, 2-349
enabling 2-146
enabling immediate-leave processing 2-152
enabling on a VLAN 2-150
enabling per-VLAN Explicit Host Tracking 2-151
informs
enabling 2-453
inline power
displaying inline power status 2-402
inspection log
clearing log buffer 2-28
interface
displaying suppressed multicast bytes 2-312
interface capabilities
displaying 2-309
interface configuration mode
summary 1-5
interface link
display cable disconnect time 2-315
interfaces
configuring dot1q tunnel ports 2-500
creating an interface-range macro 2-79
debugging output of interface related activities 2-46
displaying description 2-314
displaying error-disabled state 2-318
displaying information when tunneling is enabled 2-366
displaying status 2-314
displaying traffic for a specific interface 2-306
entering interface configuration mode 2-111
executing a command on multiple ports in a range 2-114
selecting an interface to configure 2-111
setting a CoS value for Layer 2 packets 2-167
setting drop threshold for Layer 2 packets 2-168
setting the interface type 2-500
interface speed
configuring interface speed 2-489
interface transceiver
displaying diagnostic data 2-321
internal VLAN allocation
configuring 2-543
default setting 2-543
displaying allocation information 2-442
Internet Group Management Protocol
IP ARP
applying ARP ACL to VLAN 2-117
clearing inspection statistics 2-29
clearing status of log buffer 2-28
controlling packet logging 2-127
enabling dynamic inspection 2-126
limit rate of incoming requests 2-119
set per-port config trust state 2-123
showing status of dynamic ARP inspection 2-328
showing status of log buffer 2-331
IPC
debugging IPC activities 2-54
IP DHCP Snooping
IP header validation
disabling 2-163
enabling 2-163
IP interfaces
displaying usability status 2-350
IP multicast
displaying multicast routing table information 2-356
IP packets
enable DSCP rewrite 2-243
IP phone and standard desktop
enabling Cisco-recommended features 2-185
IP source binding
adding or deleting 2-160
displaying bindingstagging 2-361
IP source guard
debugging messages 2-57
displaying configuration and filters 2-362
enabling on DHCP snooping 2-164
J
Jumbo frames
enabling jumbo frames 2-203
L
LACP
deselecting channeling protocol 2-18
enabling LACP on an interface 2-18
setting channeling protocol 2-18
Layer 2
displaying ACL configuration 2-372
Layer 2 interface type
specifying a nontrunking, nontagged single VLAN interface 2-500
specifying a trunking VLAN interface 2-500
Layer 2 protocol ports
displaying 2-366
Layer 2 protocol tunneling error recovery 2-170
Layer 2 switching
enabling voice VLANs 2-495
modifying switching characteristics 2-495
Layer 2 traceroute
IP addresses 2-521
Layer 3 switching
displaying information about an adjacency table 2-262
displaying port status 2-319
displaying status of native VLAN tagging 2-319
log buffer
show status 2-331
logging
controlling IP ARP packets 2-127
M
MAC Access Control Lists
MAC ACLs
defining extended MAC access list 2-174
displaying MAC ACL information 2-439
naming an ACL 2-174
MAC address filtering
configuring 2-181
disabling 2-181
enabling 2-181
MAC address table
adding static entries 2-191
clearing dynamic entries 2-38
configuring aging time 2-177
displaying dynamic table entry information 2-377
displaying entry count 2-376
displaying information 2-373
displaying interface-based information 2-379
displaying multicast information 2-381
displaying protocol-based information 2-383
displaying static table entry information 2-385
displaying the MAC address aging time 2-375
displaying VLAN-based information 2-387
learning in the protocol buckets 2-178
removing static entries 2-191
MAC address tables
adding static entries 2-181
deleting secure or specific addresses 2-40
disabling IGMP snooping on static MAC addresses 2-181
removing static entries 2-181
mac-address-table static 2-181
MAC address unicast filtering
dropping unicast traffic 2-181
macro keywords
help strings 2-2
mapping secondary VLANs to MST instance 2-227
mapping VLAN(s) to an MST instance 2-109
match subcommand
accessing 2-20
maximum transmission unit (MTU)
displaying the system MTU setting 2-431
setting the maximum Layer 2 payload size 2-517
MD5
verifying MD5 signature 2-533
message digest 5
MFIB
clearing ip mfib counters 2-35
clearing ip mfib fastdrop 2-36
displaying all active MFIB routes 2-353
displaying MFIB fastdrop table entries 2-355
enabling IP MFIB fastdrops 2-157
modes
access-group 2-5
show access-group interface 2-261
switching between PVST+, MST, and Rapid PVST 2-467
module password clearing 2-24
module reset
resetting a module by toggling the power 2-106
--More-- prompt
filter 1-6
search 1-7
MST
designating the primary and secondary root 2-475
displaying MST protocol information 2-427
displaying region configuration information 2-427
displaying spanning tree information 2-427
entering MST configuration submode 2-469
setting configuration revision number 2-254
setting path cost and port priority for instances 2-468
setting the forward delay timer for all instances 2-471
setting the hello-time delay timer for all instances 2-472
setting the max-age timer for all instances 2-473
setting the MST region name 2-204
specifying the maximum number of hops 2-474
switching between PVST+ and Rapid PVST 2-467
using the MST configuration submode revision command 2-254
using the submode name command 2-204
MTU
displaying global MTU settings 2-431
multicast
enabling storm control 2-494
multicast/unicast packets
prevent forwarding 2-499
Multicast Forwarding Information Base
multiple-character patterns 1-8
multiple hosts on authorized port 2-88
Multiple Spanning Tree
N
native VLAN
controlling tagging of traffic 2-513
displaying ports eligible for native tagging 2-441
displaying ports eligible for tagging 2-441
enabling tagging on 802.1Q trunk ports 2-541
specifing the tagging of traffic 2-514
NetFlow
enabling NetFlow statistics 2-158
including infer fields in routing statistics 2-158
next-hop
displaying CEF VLAN information 2-332
no form of a command, using 1-6
NVRAM
debugging NVRAM activities 2-60
O
output
pattern searches 1-7
P
packet forwarding
prevent unknown packets 2-499
packet memory failure
direct switch action upon detection 2-82
packet memory test
bootup, displaying results 2-281
ongoing, displaying results 2-283
PACL
access-group mode 2-5
paging prompt
PAgP
clearing port channel information 2-39
debugging PAgP activity 2-61
deselecting channeling protocol 2-18
displaying port channel information 2-393
hot standby mode
returning to defaults 2-206
selecting ports 2-206
input interface of incoming packets
learning 2-205
returning to defaults 2-205
setting channeling protocol 2-18
parentheses 1-10
password
clearing on an intelligent line module 2-24
establishing enhanced password security 2-532
setting username 2-532
PBR
PM activities
debugging 2-64
disabling debugging 2-64
Policy Based Routing
port, dual-capable
selecting the connector 2-196
Port Aggregation Protocol
port-based authentication
displaying debug messages 2-50
displaying statistics and status 2-285
enabling 802.1X 2-89
manual control of authorization state 2-89
multiple hosts on authorized port 2-88
periodic re-authentication
enabling 2-92
re-authenticating 802.1X-enabled ports 2-91
switch-to-client frame-retransmission number 2-87
port channel
accessing 2-113
creating 2-113
displaying information 2-393
load distribution method
resetting to defaults 2-211
setting 2-211
port range
executing 2-114
port security
debugging ports security 2-65
deleting secure or specific addresses 2-40
displaying settings for an interface or switch 2-399
enabling 2-502
filter source IP and MAC addresses 2-164
setting action upon security violation 2-502
setting the rate limit for bad packets 2-502
sticky port 2-502
Port Trust Device
displaying 2-409
power status
displaying inline power 2-402
displaying power status 2-402
power supply
configuring combined and redundant power on the Catalyst 4507R 2-217
configuring inline power 2-214
configuring power consumption 2-216
configuring power redundancy on the Catalyst 4507R 2-222
displaying the SEEPROM 2-300
setting inline power state 2-213
Private VLAN
privileged EXEC mode, summary 1-5
prompts
system 1-5
protocol tunneling
configuring encapsulation rate 2-170
disabling 2-166
displaying port information 2-366
enabling 2-166
setting a CoS value for Layer 2 packets 2-167
setting a drop threshold for Layer 2 packets 2-168
PVLANs
configuring isolated, primary, and community PVLANs 2-223
controlling tagging of native VLAN traffic 2-513
disabling sticky-ARP 2-161
displaying map information for VLAN SVIs 2-317
displaying PVLAN information 2-444
enabling interface configuration mode 2-500
enabling sticky-ARP 2-161
mapping VLANs to the same SVI 2-225
specifying host ports 2-500
specifying promiscuous ports 2-500
PVST+
switching between PVST and MST 2-467
Q
QoS
account Layer 2 encapsulation 2-230
attaching a policy-map to an interface 2-255
automatic configuration 2-12
clearing aggregate counters 2-41
configuring a QoS policy map 2-209
configuring auto 2-12
defining a named aggregate policer 2-232
defining default CoS value 2-235
defining ingress CoS-to-DSCP mapping 2-239
displaying aggregate policer information 2-407
displaying auto configuration 2-266
displaying class maps information 2-274
displaying configuration information 2-266
displaying configurations of policies 2-396
displaying policy map information 2-395, 2-398
displaying QoS information 2-406
displaying QoS map information 2-410
enabling global configuration mode 2-228
enabling per-VLAN QoS for a Layer 2 interface 2-246
enabling QoS on an interface 2-229
mapping DSCP values to transmit queues 2-240
mapping egress DSCP-to-CoS 2-240
mapping the DSCP-to-CoS value 2-240
setting the mapping of policed DSCP values 2-242
setting the trust state 2-244
specifying flow-based match criteria 2-193
QoS CoS
configuring for tunneled Layer 2 protocol packets 2-167
defining default CoS value 2-235
qos dbl 2-236
question command 1-1
queueing information
displaying 2-409
R
Rapid PVST
switching between PVST and MST 2-467
re-authenticating 802.1X-enabled ports 2-91
re-authentication
periodic 2-92
set the time 2-94
reboots
restoring bindings across 2-132
redundancy
accessing the main CPU 2-247
changing from active to standby supervisor engine 2-248
displaying information 2-412
displaying redundancy facility information 2-412
displaying RF client list 2-412
displaying RF operational counters 2-412
displaying RF states 2-412
enabling automatic synchronization 2-15
forcing switchover to standby supervisor engine 2-248
set the mode 2-197
synchronizing the route processor configurations 2-191
related documentation xv
remote SPAN
renew commands
ip dhcp snooping database 2-252
resetting PVLAN trunk
setting switchport to trunk 2-500
rj45 connector, selecting the connector 2-196
ROM monitor mode
summary 1-6
Route Processor Redundancy
RPR
set the redundancy mode 2-197
RSPAN
converting VLAN to RSPAN VLAN 2-251
displaying list 2-446
S
saving configuration changes 1-11
secure address, configuring 2-219
secure ports, limitations 2-503
set the redundancy mode 2-197
sfp connector, selecting the connector 2-196
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 2-419
slot0
displaying information about the system 2-421
SMF
debugging address insertions and deletions 2-67
SNMP
debugging spanning tree activities 2-68
ifIndex persistence
clearing SNMP ifIndex commands 2-451
compress SNMP ifIndex table format 2-456
disabling globally 2-455
disabling on an interface 2-452
enabling globally 2-455
enabling on an interface 2-452
informs
disabling 2-453
enabling 2-453
traps
configuring to send when storm occurs 2-492
disabling 2-453
enabling 2-453
software MAC filter
SPAN commands
configuring a SPAN session to monitor 2-199
displaying SPAN session information 2-430, 2-493
SPAN enhancements
displaying status 2-391
Spanning Tree Protocol
SPAN session
displaying session information 2-391
filter ACLs 2-199
specify encap type 2-199
turn off host learning based on ingress packets 2-199
special characters
anchoring, table 1-10
SSO 2-197
standard desktop
enabling Cisco-recommended features 2-183
standard desktop and Cisco IP phone
enabling Cisco-recommended features 2-185
sticky address, configuring 2-220
sticky-ARP
disabling on PVLANs 2-161
enabling on PVLANs 2-161
sticky port
deleting 2-40
enabling security 2-502
storm control
configuring for action when storm occurs 2-492
disabling suppression mode 2-291
displaying settings 2-429
enabling 2-492
enabling broadcast 2-492, 2-494
enabling multicast 2-492, 2-494
enabling suppression mode 2-291
enabling timer to recover from error disable 2-100
multicast, enabling 2-494
setting high and low levels 2-492
setting suppression level 2-291
STP
configuring link type for a port 2-465
configuring tunneling encapsulation rate 2-170
debugging all activities 2-68
debugging spanning tree activities 2-68
debugging spanning tree BackboneFast events 2-69
debugging spanning tree UplinkFast 2-72
detecting misconfiguration 2-462
displaying active interfaces only 2-423
displaying BackboneFast status 2-423
displaying bridge status and configuration 2-423
displaying spanning tree debug messages 2-68
displaying summary of interface information 2-423
enabling BPDU filtering by default on all PortFast ports 2-480
enabling BPDU filtering on an interface 2-458
enabling BPDU guard by default on all PortFast ports 2-482
enabling BPDU guard on an interface 2-460
enabling extended system ID 2-463
enabling loop guard as a default on all ports 2-466
enabling PortFast by default on all access ports 2-483
enabling PortFast mode 2-478
enabling protocol tunneling for 2-166
enabling root guard 2-464
enabling spanning tree BackboneFast 2-457
enabling spanning tree on a per VLAN basis 2-487
enabling spanning tree UplinkFast 2-485
setting an interface priority 2-484
setting drop threshold for 2-168
setting pathcost 2-461
setting the default pathcost calculation method 2-477
subinterface configuration mode, summary 1-6
SVI
creating a Layer 3 interface on a VLAN 2-116
switchport 2-514
switchport interfaces
displaying status of Layer 3 port 2-319
displaying status of native VLAN tagging 2-319
switch shim
debugging 2-70
disabling debugging 2-70
switch to router connection
enabling Cisco-recommended features 2-187
switch to switch connection
enabling Cisco-recommended features 2-189
switch virtual interface
sw-vlan 2-73
system prompts 1-5
T
Tab key
command completion 1-1
tables
characters with special meaning 1-7
mac access-list extended subcommands 2-174
match syntax description 2-21
multipliers 1-9
relationship between duplex and speed commands 2-490
show cdp neighbors detail field descriptions 2-273
show cdp neighbors field descriptions 2-272
show ip interface field descriptions 2-351
show vlan command output fields 2-445
show vtp command output fields 2-449
special characters 1-9
special characters used for anchoring 1-10
speed command options 2-193, 2-490
valid interface types 2-111
TAC
displaying information useful to TAC 2-432\
TCAM
debugging spanning tree activities 2-68
temperature readings
displaying information 2-288
timer information 2-292
traffic shaping
enable on an interface 2-259
traps, enabling 2-453
trunk encapsulation
setting format 2-514
trunk interfaces
displaying trunk interfaces information 2-326
trust state
setting 2-123
tunnel ports
displaying information about Layer 2 protocol 2-366
TX queues
allocating bandwidth 2-524
returning to default values 2-524
setting priority to high 2-524
specifying burst size 2-524
specifying traffic rate 2-524
U
UDLD
displaying administrative and operational status 2-434
enabling by default on all fiber interfaces 2-526
enabling on an individual interface 2-528
preventing a fiber interface from being enabled 2-528
resetting all shutdown ports 2-530
setting the message timer 2-526
Unidirectional Link Detection
unknown multicast traffic, preventing 2-499
unknown unicast traffic, preventing 2-499
user EXEC mode, summary 1-5
username
setting password and privilege level 2-532
V
VACLs
access-group mode 2-5
applying VLAN access maps 2-542
displaying VLAN access map information 2-439
specifying an action in a VLAN access map 2-8
specifying the match clause for a VLAN access-map sequence 2-192
using a VLAN filter 2-542
VLAN
applying an ARP ACL 2-117
configuring 2-535
converting to RSPAN VLAN 2-251
displaying CEF information 2-332
displaying CEF next-hop information 2-332
displaying information on switch interfaces 2-342, 2-346
displaying information on VLAN switch interfaces 2-349
displaying information sorted by group IP address 2-342, 2-346
displaying IP address and version information 2-342, 2-346
displaying Layer 2 VLAN information 2-436
displaying statistical information 2-389
displaying VLAN information 2-438
enabling dynamic ARP inspection 2-126
enabling Explicit Host Tracking 2-151
enabling guest per-port 2-83
enabling guest VLAN supplicant 2-84
entering VLAN configuration mode 2-539
native frames
enabling tagging on all 802.1Q trunk ports 2-541
pruning the list for VTP 2-514
setting the list of allowed 2-514
VLAN Access Control Lists
VLAN access map
VLAN database
resetting 2-253
VLAN debugging
limiting output 2-49
VLAN manager
debugging 2-73
disabling debugging 2-73
IOS file system error tests
debugging 2-74
disabling debugging 2-74
VLAN Query Protocol
VLAN query protocol (VQPC)
debugging 2-78
VLANs
clearing
counters 2-42
clearing hardware logic 2-26
configuring
internal allocation scheme 2-543
displaying
internal VLAN allocation information 2-442
RSPAN VLANs 2-446
entering VLAN configuration mode 2-539
VMPS
configuring servers 2-547
reconfirming dynamic VLAN assignments 2-545
voice VLANs
enabling 2-495
VoIP
configuring auto-QoS 2-12
VQP
per-server retry count 2-546
reconfirming dynamic VLAN assignments 2-545
VTP
configuring the administrative domain name 2-551
configuring the device in VTP client mode 2-550
configuring the device in VTP server mode 2-554
configuring the device in VTP transparent mode 2-555
configuring tunnel encapsulation rate 2-170
creating a VTP domain password 2-552
displaying domain information 2-448
displaying statistics information 2-448
enabling protocol tunneling for 2-166
enabling pruning in the VLAN database 2-553
enabling VTP version 2 mode 2-556
modifying the VTP configuration storage file name 2-549
set drop threshold for 2-168
VTP protocol code
activating debug messages 2-76
deactivating debug messages 2-76
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