- Index
- Quick Links to Catalyst 4500 Series Switch Cisco IOS Commands
- 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
802.1Q trunk ports and native VLANs 2-503
802.1Q tunnel ports
configuring 2-462
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 2-256
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 2-229
connecting to a specific remote module 2-235
access-group
displaying mac interface 2-336
show mode interface 2-239
access groups
IP 2-5
access lists
clearing an access template 2-26
defining ARP 2-10
displaying ARP information 2-240
See also ACLs, MAC ACLs, and VACLs
access maps
applying with VLAN filter 2-504
ACLs
access-group mode 2-5
determining ACL hardware programming 2-6
displaying mac access-group interface 2-336
using ACL naming conventions for MAC ACLs 2-163
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 IPC table entries 2-43
aggregate policer
displaying information 2-369
aging time
displaying MAC address aging time 2-339
MAC address table 2-166
alarms
displaying operational status 2-259
alternation
description 1-9
anchoring
description 1-10
ARP
access list, displaying detailed information 2-240
defining access-lists 2-10
ARP inspection
enforce certain types of checking 2-118
ARP packet
deny based on DHCP bindings 2-79
permit based on DHCP bindings 2-190
authentication
setting username 2-494
using an MD5-type encryption method 2-494
verifying MD5 signature 2-495
verifying the checksum for Flash memory 2-495
authorization state
enabling manual control 2-87
authorization state of a controlled port 2-87
automatic installation
displaying status 2-241
auto-QoS
configuring for VoIP 2-12
displaying configuration 2-242
B
baby giants
displaying the system MTU setting 2-394
setting the maximum Layer 2 payload size 2-479
BackboneFast
displaying debugging messages 2-68
displaying spanning tree status 2-385
enabling debugging 2-68
bindings
store for DHCP snooping 2-126
BOOT environment variable
displaying information 2-246
bootflash
displaying information 2-244
BPDUs
debugging spanning tree activities 2-67
bridge protocol data units
broadcast suppression level
C
Catalyst 4507R 2-199
power redundancy mode 2-201
CDP
configuring tunneling encapsulation rate 2-160
enabling protocol tunneling for 2-157
set drop threshold for 2-159
CEF
displaying next-hop information 2-300
displaying VLAN configuration information 2-300
cisco-desktop
macro apply 2-172
Cisco Express Forwarding
cisco-phone
macro apply 2-174
cisco-router
macro apply 2-176
cisco-switch
macro apply 2-178
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 2-437
configuring a SPAN session to monitor
limit SPAN source traffic 2-182
configuring forward delay 2-433
configuring root as primary 2-437
CoS
assigning to Layer 2 protocol packets 2-158
CoS QoS default
defining value on an interface 2-214
Cost of Service
counters
clearing interface counters 2-21
D
DAI
clear statistics 2-28
DBL
displaying qos dbl 2-370
enabling DBL globally on the switch 2-215
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 2-214
default form of a command, using 1-6
defining egress DSCP-to-CoS mapping 2-219
DHCP
clearing database statistics 2-30
DHCP bindings
configuring bindings 2-125
deny ARP packet based on matches 2-79
permit ARP packet based on matches 2-190
DHCP snooping
clearing database 2-29
displaying 2-301
displaying binding table 2-302
displaying status of DHCP database 2-305
displaying status of error detection 2-262
enabling DHCP globally 2-124
enabling IP source guard 2-155
enabling on a VLAN 2-131
enabling option 82 2-128
enabling rate limiting on an interface 2-129
enabling trust on an interface 2-130
establishing binding configuration 2-125
renew binding database 2-231
store generated bindings 2-126
diagnostic test
display module-based results 2-248
displaying error disable recovery 2-263
displaying inline power status 2-364
displaying monitoring activity 2-58
displaying SEEPROM information
GBIC 2-270
displaying SPAN session information 2-393, 2-455
document conventions xvi
document organization xv
DOS attack
protecting system's resources 2-113
drop threshold, Layer 2 protocol tunneling 2-159
DSCP rewrite for IP packets
enable 2-222
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 2-113
Dynamic Buffer Limiting
Dynamic Host Configuration Protocol
E
EAP
restarting authentication process 2-85
enabling
debugging for UDLD 2-76
voice VLANs 2-457
environmental
alarms 2-259
displaying information 2-259
status 2-259
temperature 2-259
error disable detection
enabling error disable detection 2-96
error-disabled state
displaying 2-286
error disable recovery
configuring recovery mechanism variables 2-98
displaying recovery timer information 2-263
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 2-264
removing interfaces from EtherChannel groups 2-16
EtherChannel guard
detecting STP misconfiguration 2-424
Explicit Host Tracking
clearing the database 2-33
displaying host membership 2-313
enabling per-VLAN 2-142
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 2-259
Flash memory file system
displaying file system information 2-244
verifying checksum 2-495
flow control
configuring a gigabit interface for pause frames 2-101
displaying per-interface statistics for flow control 2-268
G
GBIC
displaying SEEPROM information 2-270
Gigabit Ethernet interface
clearing the hardware logic 2-24
global configuration mode
using 1-5
H
hardware module
resetting a module by toggling the power 2-104
host membership on an interface
displaying information 2-313
hot standby protocol
debugging 2-46
disabling debugging 2-46
limiting output 2-46
I
IDPROMs
displaying SEEPROM information
chassis 2-270
clock module 2-270
fan trays 2-270
module 2-270
mux buffer 2-270
power supplies 2-270
supervisor engine 2-270
ifIndex persistence
clearing SNMP ifIndex commands 2-413
compress SNMP ifIndex table format 2-418
disabling globally 2-417
disabling on an interface 2-414
enabling globally 2-417
enabling on an interface 2-414
IGMP
applying filters for host joining on Layer 2 interfaces 2-133
clearing IGMP group cache entries 2-31
configuring frequency for IGMP host-query messages 2-136
creating an IGMP profile 2-135
displaying IGMP interface configuration information 2-307
displaying profiles 2-308
setting maximum group numbers 2-134
IGMP profiles
displaying 2-308
IGMP snooping
clearing the EHT database 2-33
configuring a Layer 2 interface as a group member 2-146
configuring a Layer 2 interface as a multicast router 2-144
configuring a static VLAN interface 2-146
displaying host membership 2-313
displaying multicast information 2-315
displaying VLAN information 2-309, 2-316
enabling 2-137
enabling immediate-leave processing 2-143
enabling on a VLAN 2-141
enabling per-VLAN Explicit Host Tracking 2-142
informs
enabling 2-415
inline power
displaying inline power status 2-364
inspection log
clearing log buffer 2-27
interface
displaying suppressed multicast bytes 2-280
interface capabilities
displaying 2-277
interface configuration mode
summary 1-5
interface link
display cable disconnect time 2-283
interfaces
configuring dot1q tunnel ports 2-462
creating an interface-range macro 2-78
debugging output of interface related activities 2-45
displaying description 2-282
displaying error-disabled state 2-286
displaying information when tunneling is enabled 2-330
displaying status 2-282
displaying traffic for a specific interface 2-275
executing a command on multiple ports in a range 2-108
setting a CoS value for Layer 2 packets 2-158
setting drop threshold for Layer 2 packets 2-159
setting the interface type 2-462
interface speed
configuring interface speed 2-451
interface transceiver
displaying diagnostic data 2-289
internal VLAN allocation
configuring 2-505
default setting 2-505
displaying allocation information 2-404
Internet Group Management Protocol
IP ARP
applying ARP ACL to VLAN 2-111
clearing inspection statistics 2-28
clearing status of log buffer 2-27
controlling packet logging 2-121
enabling dynamic inspection 2-120
limit rate of incoming requests 2-113
set per-port config trust state 2-117
showing status of dynamic ARP inspection 2-296
showing status of log buffer 2-299
IPC
debugging IPC activities 2-53
IP DHCP Snooping
IP header validation
disabling 2-154
enabling 2-154
IP multicast
displaying multicast routing table information 2-320
IP packets
enable DSCP rewrite 2-222
IP phone and standard desktop
enabling Cisco-recommended features 2-174
IP source binding
adding or deleting 2-151
displaying bindingstagging 2-325
IP source guard
debugging messages 2-56
displaying configuration and filters 2-326
enabling on DHCP snooping 2-155
J
Jumbo frames
enabling jumbo frames 2-186
L
LACP
deselecting channeling protocol 2-18
enabling LACP on an interface 2-18
setting channeling protocol 2-18
Layer 2
displaying ACL configuration 2-336
Layer 2 interface type
specifying a nontrunking, nontagged single VLAN interface 2-462
specifying a trunking VLAN interface 2-462
Layer 2 protocol ports
displaying 2-330
Layer 2 protocol tunneling error recovery 2-160
Layer 2 switching
enabling voice VLANs 2-457
modifying switching characteristics 2-457
Layer 2 traceroute
IP addresses 2-483
Layer 3 switching
displaying port status 2-287
displaying status of native VLAN tagging 2-287
log buffer
show status 2-299
logging
controlling IP ARP packets 2-121
M
MAC Access Control Lists
MAC ACLs
defining extended MAC access list 2-163
displaying MAC ACL information 2-401
naming an ACL 2-163
MAC address filtering
configuring 2-170
disabling 2-170
enabling 2-170
MAC address table
adding static entries 2-180
clearing dynamic entries 2-37
configuring aging time 2-166
displaying dynamic table entry information 2-341
displaying entry count 2-340
displaying information 2-337
displaying interface-based information 2-343
displaying multicast information 2-345
displaying protocol-based information 2-347
displaying static table entry information 2-349
displaying the MAC address aging time 2-339
displaying VLAN-based information 2-351
learning in the protocol buckets 2-167
removing static entries 2-180
MAC address tables
adding static entries 2-170
deleting secure or specific addresses 2-39
disabling IGMP snooping on static MAC addresses 2-170
removing static entries 2-170
mac-address-table static 2-170
MAC address unicast filtering
dropping unicast traffic 2-170
macro keywords
help strings 2-2
mapping secondary VLANs to MST instance 2-206
mapping VLAN(s) to an MST instance 2-105
match subcommand
accessing 2-19
maximum transmission unit (MTU)
displaying the system MTU setting 2-394
setting the maximum Layer 2 payload size 2-479
MD5
verifying MD5 signature 2-495
message digest 5
MFIB
clearing ip mfib counters 2-34
clearing ip mfib fastdrop 2-35
displaying all active MFIB routes 2-317
displaying MFIB fastdrop table entries 2-319
enabling IP MFIB fastdrops 2-148
modes
access-group 2-5
show access-group interface 2-239
switching between PVST+, MST, and Rapid PVST 2-429
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 2-437
displaying MST protocol information 2-390
displaying region configuration information 2-390
displaying spanning tree information 2-390
entering MST configuration submode 2-431
setting configuration revision number 2-233
setting path cost and port priority for instances 2-430
setting the forward delay timer for all instances 2-433
setting the hello-time delay timer for all instances 2-434
setting the max-age timer for all instances 2-435
setting the MST region name 2-187
specifying the maximum number of hops 2-436
switching between PVST+ and Rapid PVST 2-429
using the MST configuration submode revision command 2-233
using the submode name command 2-187
MTU
displaying global MTU settings 2-394
multicast
enabling storm control 2-456
multicast/unicast packets
prevent forwarding 2-461
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 2-475
displaying ports eligible for native tagging 2-403
displaying ports eligible for tagging 2-403
enabling tagging on 802.1Q trunk ports 2-503
specifing the tagging of traffic 2-476
NetFlow
enabling NetFlow statistics 2-149
including infer fields in routing statistics 2-149
next-hop
displaying CEF VLAN information 2-300
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 2-461
packet memory failure
direct switch action upon detection 2-81
packet memory test
bootup, displaying results 2-252
ongoing, displaying results 2-254
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 2-357
hot standby mode
returning to defaults 2-189
selecting ports 2-189
input interface of incoming packets
learning 2-188
returning to defaults 2-188
setting channeling protocol 2-18
parentheses 1-10
password
clearing on an intelligent line module 2-23
establishing enhanced password security 2-494
setting username 2-494
PBR
PM activities
debugging 2-63
disabling debugging 2-63
Policy Based Routing
Port Aggregation Protocol
port-based authentication
displaying debug messages 2-49
displaying statistics and status 2-256
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 2-107
creating 2-107
displaying information 2-357
load distribution method
resetting to defaults 2-194
setting 2-194
port range
executing 2-108
port security
debugging ports security 2-64
deleting secure or specific addresses 2-39
enabling 2-464
filter source IP and MAC addresses 2-155
setting action upon security violation 2-464
setting the rate limit for bad packets 2-464
sticky port 2-464
Port Trust Device
displaying 2-371
power status
displaying inline power 2-364
displaying power status 2-364
power supply
configuring combined and redundant power on the Catalyst 4507R 2-199
configuring inline power 2-196
configuring power consumption 2-198
configuring power redundancy on the Catalyst 4507R 2-201
displaying the SEEPROM 2-270
setting inline power state 2-195
Private VLAN
privileged EXEC mode, summary 1-5
prompts
system 1-5
protocol tunneling
configuring encapsulation rate 2-160
disabling 2-157
displaying port information 2-330
enabling 2-157
setting a CoS value for Layer 2 packets 2-158
setting a drop threshold for Layer 2 packets 2-159
PVLANs
configuring isolated, primary, and community PVLANs 2-202
controlling tagging of native VLAN traffic 2-475
disabling sticky-ARP 2-152
displaying map information for VLAN SVIs 2-285
displaying PVLAN information 2-406
enabling interface configuration mode 2-462
enabling sticky-ARP 2-152
mapping VLANs to the same SVI 2-204
specifying host ports 2-462
specifying promiscuous ports 2-462
PVST+
switching between PVST and MST 2-429
Q
QoS
account Layer 2 encapsulation 2-209
attaching a policy-map to an interface 2-234
automatic configuration 2-12
clearing aggregate counters 2-40
configuring a QoS policy map 2-192
configuring auto 2-12
defining a named aggregate policer 2-211
defining default CoS value 2-214
defining ingress CoS-to-DSCP mapping 2-218
displaying aggregate policer information 2-369
displaying auto configuration 2-242
displaying class maps information 2-247
displaying configuration information 2-242
displaying configurations of policies 2-360
displaying policy map information 2-359
displaying QoS information 2-368
displaying QoS map information 2-372
enabling global configuration mode 2-207
enabling per-VLAN QoS for a Layer 2 interface 2-225
enabling QoS on an interface 2-208
mapping DSCP values to transmit queues 2-219
mapping egress DSCP-to-CoS 2-219
mapping the DSCP-to-CoS value 2-219
setting the mapping of policed DSCP values 2-221
setting the trust state 2-223
QoS CoS
configuring for tunneled Layer 2 protocol packets 2-158
defining default CoS value 2-214
qos dbl 2-215
question command 1-1
queueing information
displaying 2-371
R
Rapid PVST
switching between PVST and MST 2-429
re-authenticating 802.1X-enabled ports 2-89
re-authentication
periodic 2-90
reboots
restoring bindings across 2-125
redundancy
accessing the main CPU 2-226
changing from active to standby supervisor engine 2-227
displaying information 2-374
displaying redundancy facility information 2-374
displaying RF client list 2-374
displaying RF operational counters 2-374
displaying RF states 2-374
enabling automatic synchronization 2-15
forcing switchover to standby supervisor engine 2-227
synchronizing the route processor configurations 2-180
related documentation xv
remote SPAN
renew commands
ip dhcp snooping database 2-231
resetting PVLAN trunk
setting switchport to trunk 2-462
ROM monitor mode
summary 1-6
root guard
displaying root inconsistency status 2-385
Route Processor Redundancy
RSPAN
converting VLAN to RSPAN VLAN 2-230
displaying list 2-408
S
saving configuration changes 1-11
secure ports, limitations 2-465
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 2-381
slot0
displaying information about the system 2-383
SMF
debugging address insertions and deletions 2-66
SNMP
debugging spanning tree activities 2-67
ifIndex persistence
clearing SNMP ifIndex commands 2-413
compress SNMP ifIndex table format 2-418
disabling globally 2-417
disabling on an interface 2-414
enabling globally 2-417
enabling on an interface 2-414
informs
disabling 2-415
enabling 2-415
traps
configuring to send when storm occurs 2-454
disabling 2-415
enabling 2-415
software MAC filter
SPAN commands
configuring a SPAN session to monitor 2-182
displaying SPAN session information 2-393, 2-455
SPAN enhancements
displaying status 2-355
Spanning Tree Protocol
SPAN session
displaying session information 2-355
filter ACLs 2-182
specify encap type 2-182
turn off host learning based on ingress packets 2-182
special characters
anchoring, table 1-10
standard desktop
enabling Cisco-recommended features 2-172
standard desktop and Cisco IP phone
enabling Cisco-recommended features 2-174
sticky-ARP
disabling on PVLANs 2-152
enabling on PVLANs 2-152
sticky port
deleting 2-39
enabling security 2-464
storm control
configuring for action when storm occurs 2-454
disabling suppression mode 2-262
displaying settings 2-392
enabling 2-454
enabling broadcast 2-454, 2-456
enabling multicast 2-454, 2-456
enabling suppression mode 2-262
enabling timer to recover from error disable 2-98
multicast, enabling 2-456
setting high and low levels 2-454
setting suppression level 2-262
STP
configuring link type for a port 2-427
configuring tunneling encapsulation rate 2-160
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 2-424
displaying active interfaces only 2-385
displaying BackboneFast status 2-385
displaying bridge status and configuration 2-385
displaying default path cost method 2-385
displaying spanning tree debug messages 2-67
displaying status information 2-385
displaying status per VLAN 2-385
displaying summary of interface information 2-385
displaying UplinkFast status 2-385
enabling BPDU filtering by default on all PortFast ports 2-442
enabling BPDU filtering on an interface 2-420
enabling BPDU guard by default on all PortFast ports 2-444
enabling BPDU guard on an interface 2-422
enabling extended system ID 2-425
enabling loop guard as a default on all ports 2-428
enabling PortFast by default on all access ports 2-445
enabling PortFast mode 2-440
enabling protocol tunneling for 2-157
enabling root guard 2-426
enabling spanning tree BackboneFast 2-419
enabling spanning tree on a per VLAN basis 2-449
enabling spanning tree UplinkFast 2-447
setting an interface priority 2-446
setting drop threshold for 2-159
setting pathcost 2-423
setting the default pathcost calculation method 2-439
subinterface configuration mode, summary 1-6
SVI
creating a Layer 3 interface on a VLAN 2-110
switchport 2-476
switchport interfaces
displaying status of Layer 3 port 2-287
displaying status of native VLAN tagging 2-287
switch shim
debugging 2-69
disabling debugging 2-69
switch to router connection
enabling Cisco-recommended features 2-176
switch to switch connection
enabling Cisco-recommended features 2-178
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 2-163
match syntax description 2-20
multipliers 1-9
relationship between duplex and speed commands 2-452
show vlan command output fields 2-407
show vtp command output fields 2-411
special characters 1-9
special characters used for anchoring 1-10
speed command options 2-451
TAC
displaying information useful to TAC 2-395
TCAM
debugging spanning tree activities 2-67
temperature readings
displaying information 2-259
timer information 2-263
traffic shaping
enable on an interface 2-236
traps, enabling 2-415
trunk encapsulation
setting format 2-476
trunk interfaces
displaying trunk interfaces information 2-294
trust state
setting 2-117
tunnel ports
displaying information about Layer 2 protocol 2-330
TX queues
allocating bandwidth 2-486
returning to default values 2-486
setting priority to high 2-486
specifying burst size 2-486
specifying traffic rate 2-486
U
UDLD
enabling by default on all fiber interfaces 2-488
enabling on an individual interface 2-490
preventing a fiber interface from being enabled 2-490
resetting all shutdown ports 2-492
setting the message timer 2-488
Unidirectional Link Detection
unknown multicast traffic, preventing 2-461
unknown unicast traffic, preventing 2-461
user EXEC mode, summary 1-5
username
setting password and privilege level 2-494
V
VACLs
access-group mode 2-5
applying VLAN access maps 2-504
displaying VLAN access map information 2-401
specifying an action in a VLAN access map 2-8
specifying the match clause for a VLAN access-map sequence 2-181
using a VLAN filter 2-504
VLAN
applying an ARP ACL 2-111
configuring 2-497
converting to RSPAN VLAN 2-230
displaying CEF information 2-300
displaying CEF next-hop information 2-300
displaying information on switch interfaces 2-309
displaying information on VLAN switch interfaces 2-316
displaying information sorted by group IP address 2-309
displaying IP address and version information 2-309
displaying Layer 2 VLAN information 2-398
displaying statistical information 2-353
displaying VLAN information 2-400
enabling dynamic ARP inspection 2-120
enabling Explicit Host Tracking 2-142
enabling guest per-port 2-82
entering VLAN configuration mode 2-501
native frames
enabling tagging on all 802.1Q trunk ports 2-503
pruning the list for VTP 2-476
setting the list of allowed 2-476
VLAN Access Control Lists
VLAN access map
VLAN database
resetting 2-232
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 2-505
displaying
internal VLAN allocation information 2-404
RSPAN VLANs 2-408
entering VLAN configuration mode 2-501
VMPS
configuring servers 2-509
reconfirming dynamic VLAN assignments 2-507
voice VLANs
enabling 2-457
VoIP
configuring auto-QoS 2-12
VQP
per-server retry count 2-508
reconfirming dynamic VLAN assignments 2-507
VTP
configuring the administrative domain name 2-513
configuring the device in VTP client mode 2-512
configuring the device in VTP server mode 2-516
configuring the device in VTP transparent mode 2-517
configuring tunnel encapsulation rate 2-160
creating a VTP domain password 2-514
displaying domain information 2-410
displaying statistics information 2-410
enabling protocol tunneling for 2-157
enabling pruning in the VLAN database 2-515
enabling VTP version 2 mode 2-518
modifying the VTP configuration storage file name 2-511
set drop threshold for 2-159
VTP protocol code
activating debug messages 2-75
deactivating debug messages 2-75
Feedback