Table Of Contents
Symbols - Numerics - A - B - C - D - E - F - G - H - I - J - L - M - N - P - Q - R - S - T - U - V -
Index
Symbols
$ matches the end of a string 1-7
( ) in commands 1-11
* 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
802.1s Multiple Spanning Tree
802.1x Port Based Authentication
allowing multiple hosts on a port 2-79
debugging 802.1x Port Based Authentication 2-42
displaying port based authentication 2-223
enable manual control of auth state 2-80
enabling authentication on the system 2-84
enabling guest VLAN 2-75
enabling periodic re-authentication of the client 2-83
initializing manually a re-authentication of all dot1x ports 2-82
initializing state machines 2-76
setting maximum number of times to send EAP requests 2-78
A
abbreviating commands
context-sensitive help 1-1
Access Gateway Module
connect to a module 2-6
connect to a remote module 2-205
connect to a specific remote module 2-210
access-group
show mac interface 2-289
show mode interface 2-211
access groups
IP 2-2
access lists
arp 2-5
clearing an access template 2-21
See also ACLs, MAC ACLs, and VACLs
show arp command 2-214
access maps
applying with VLAN filter 2-450
ACLs
access-group mode 2-2
mac access-group interface, show 2-289
using ACL name naming conventions in a MAC ACL 2-151
action clause
specifying drop or forward action in a VACL 2-3
adjacency
debugging the adjacency table 2-36
disabling the debug facility 2-36
displaying IPC table entries 2-36
displaying table information 2-212
aggregate policer
displaying information 2-321
aging time
displaying MAC address aging time 2-292
MAC address table 2-154
alarms
displaying operational status 2-226
alternation
description 1-10
anchoring
description 1-10
AppleTalk
See Cisco IOS AppleTalk and Novell IPX Command Reference, Release 12.1
ARP
access list, display detailed information 2-214
access-list command 2-5
ARP inspection
enforce certain types of checking 2-111
ARP packet
deny based on DHCP bindings 2-73
permit based on DHCP bindings 2-166
audience xiii
authentication
setting username 2-441
using an MD5-type encryption method 2-441
verifying MD5 signature 2-442
verifying the checksum for Flash memory file system 2-442
authorization state
enable manual control 2-80
authorization state of a controlled port 2-80
auto-QoS
configure for VoIP 2-7
display configuration 2-215
B
Baby Giants
displaying the system MTU setting 2-347
setting the maximum Layer 2 payload size 2-426
BackboneFast
displaying debugging messages 2-61
displaying spanning tree status 2-337
enabling debugging 2-61
bindings
store those generated by DHCP snooping 2-119
BOOT environment variable
displaying information 2-219
bootflash
displaying information 2-217
BPDUs
debugging spanning tree activities 2-60
bridge protocol data units
broadcast suppression level
configuring 2-405
enabling 2-405
C
Catalyst 4507R power redundancy mode 2-178
Catalyst 4507R power supply 2-176
CEF
displaying next-hop information 2-260
displaying VLAN configuration information 2-260
characters
used for searching command output 1-7
Cisco Express Forwarding (CEF)
clear commands
clearing Gigabit Ethernet interfaces 2-19
clearing IGMP group cache entries 2-26
clearing interface counters 2-17
clearing IP access lists 2-21, 2-22
clearing IP DHCP snooping database 2-24
clearing IP DHCP snooping database statistics 2-25
clearing MFIB counters and routes 2-28
clearing MFIB fastdrop entries 2-29
clearing PAgP channel information 2-32
clearing QoS aggregate counters 2-33
clearing VLAN interfaces 2-20
ip arp inspection statistics vlan command 2-23
CLI string search
anchoring 1-10
expressions 1-7
filtering 1-6
multiple-character patterns 1-8
multipliers 1-9
parentheses for recall 1-11
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 2-38
condition vlan
debugging VLAN output 2-41
configuration, saving 1-11
configuring
root as secondary 2-388
configuring a SPAN session to monitor
SPAN source traffic
limit to packets of a specified address type 2-159
configuring forward delay 2-384
configuring root as primary 2-388
CoS QoS default
defining value on an interface 2-191
Cost of Service (CoS)
counters
clearing interface counters 2-17
D
DAI
clear statistics 2-23
DBL
displaying qos dbl 2-322
enabling DBL globally on the switch 2-192
debug commands
debugging backup events 2-37
debugging DHCP snooping events 2-47
debugging DHCP snooping messages 2-48
debugging EtherChannel/PAgP/shim 2-43
debugging IPC activity 2-46
debugging IP DHCP snooping security messages 2-49
debugging NVRAM activities 2-52
debugging PAgP activities 2-53
debugging port manager activities 2-56
debugging software MAC filter updates 2-59
debugging spanning tree activities 2-60
debugging spanning tree backbonefast 2-61
debugging spanning tree UplinkFast 2-64
debugging supervisor redundancy 2-58
debugging VLAN manager activities 2-65
displaying monitor activity 2-51
displaying the adjacency table 2-36
enabling debug dot1x 2-42
enabling debugging messages that trace the activation and deactivation of ISL VLAN IDs 2-68
enabling debugging messages to be generated by VTP 2-69
enabling debugging of UDLD activity 2-70
enabling switch shim debugging 2-62
enabling VLAN manager IOS file system error tests 2-66
limiting debugging output for a specific VLAN 2-41
limiting interface debugging output 2-38
limiting output for debugging standby state changes 2-39
taking shortcut to debug condition interface 2-45
debugging
activity monitoring 2-51
DHCP snooping events 2-47
DHCP snooping packets 2-48
IPC activities 2-46
IP DHCP snooping security packets 2-49
NVRAM activities 2-52
PAgP activities 2-53
PAgP shim 2-43
PM activities 2-56
SMF address insertions and deletions 2-59
spanning tree BackboneFast events 2-61
spanning tree switch shim 2-62
spanning tree UplinkFast events 2-64
VLAN manager activities 2-65
VLAN manager IOS file system error tests 2-66
VTP protocol debug messages 2-69
debug spanning tree switch 2-62
debug sw-vlan vtp 2-69
default CoS value 2-191
default form of a command, using 1-6
defining egress DSCP-to-CoS mapping 2-196
DHCP
clearing database statistics 2-25
DHCP bindings
deny ARP packet based on matches 2-73
permit ARP packet based on matches 2-166
set up configuration 2-118
DHCP snooping
clearing database 2-24
display error detection status 2-229
displaying 2-261
displaying binding table 2-262
displaying status of DHCP database 2-265
enable IP source guard on 2-147
enabling DHCP globally 2-117
enabling on a VLAN 2-124
enabling option 82 2-121
enabling rate limiting on an interface 2-122
enabling trust on an interface 2-123
renew binding database 2-206
set up binding configuration 2-118
store generated bindings 2-119
diagnostics
displaying Power-On-Self-Test results and online diagnostics 2-221
display error display recovery 2-230
displaying inline power status 2-317
displaying monitoring activity 2-51
displaying SPAN session information 2-346, 2-406
document conventions xiv
document organization xiii
DOS attack
protecting system's resources 2-106
duplex mode
configuring autonegotiation on an interface 2-87
configuring full duplex on an interface 2-87
configuring half duplex on an interface 2-87
dynamic ARP inspection
preventing 2-106
Dynamic Buffer Limiting (DBL)
Dynamic Host Configuration Protocol (DHCP)
E
EAP
restarting authentication process based on number of times switch sends frames 2-78
enabling debugging for UDLD 2-70
enabling voice VLANs 2-407
environmental
alarms 2-226
displaying information 2-226
status 2-226
temperature 2-226
error disable detection
enabling error disable detection 2-89
error-disabled state
displaying 2-251
error disable recovery
configuring recovery mechanism variables 2-91
displaying recovery timer information 2-230
enable ARP inspection timeout 2-91
specifying recovery cause 2-91
EtherChannel
assigning interfaces to EtherChannel groups 2-11
debugging EtherChannel 2-43
debugging PAgP shim 2-43
debugging spanning tree activities 2-60
displaying information for a channel 2-231
removing interfaces from EtherChannel groups 2-11
EtherChannel guard
enabling detection of STP misconfiguration and displaying an error message 2-375
expressions
matching multiple expression occurrences 1-9
multiple-character patterns 1-8
multiplying pattern occurrence 1-11
single-character patterns 1-7
Extensible Authentication Protocol (EAP)
F
field replaceable unit (FRU)
displaying status information 2-226
Flash memory file system
displaying file system information 2-217
verifying checksum 2-442
flow control
configuring a gigabit interface to send or receive pause frames 2-94
displaying per-interface status and statistics related to flow control 2-235
G
Gigabit Ethernet interface
clearing the hardware logic 2-19
global configuration mode
using this command mode 1-5
H
hardware Layer 3 switching
displaying adjacency table information 2-212
hardware module
resetting a module by turning the power off and then on 2-97
hot standby protocol
debugging 2-39
disabling debugging 2-39
limiting output 2-39
I
IDPROMs
displaying SEEPROM information
chassis 2-237
clock module 2-237
fan trays 2-237
module 2-237
mux buffer 2-237
power supplies 2-237
supervisor engine 2-237
ifIndex persistence
clearing SNMP ifIndex commands 2-365
disabling globally 2-369
disabling on an interface 2-366
enabling globally 2-369
enabling on an interface 2-366
IGMP
applying filters with a profile to control which hosts on a Layer 2 interface can join one or more IP multicast groups 2-126
clearing IGMP group cache entries 2-26
configuring frequency that the switch sends IGMP host-query messages 2-129
creating an IGMP profile 2-128
displaying IGMP interface status and configuration information 2-267
setting maximum group numbers 2-127
IGMP profiles
displaying 2-268
IGMP snooping
configuring a Layer 2 interface as a member of a group 2-139
configuring a static VLAN interface 2-139
configuring statically a Layer 2 interface as a multicast router interface for a VLAN 2-137
displaying multicast information on dynamically learned and manually configured switch interfaces 2-271
displaying VLAN information 2-269, 2-272
enabling IGMP snooping 2-131
enabling IGMP snooping immediate-leave processing 2-136
enabling IGMP snooping on a VLAN 2-135
informs, enabling 2-367
inline power
displaying inline power status 2-317
inspection log
clear ip arp command 2-22
interface capabilities
displaying 2-243
interface configuration mode, summary 1-5
interfaces
creating an interface-range macro 2-72
debugging output of interface related activities 2-38
display discarded packets 2-246
displaying broadcast suppression discard counts 2-246
displaying description 2-248
displaying error counters 2-246
displaying error-disabled state 2-251
displaying status 2-248
displaying traffic for a specific interface 2-241
displaying trunk counters 2-246
executing a command on multiple ports in a range 2-101
setting the interface type 2-412
interface speed
configuring interface speed 2-402
internal VLAN allocation
configuring 2-451
default setting 2-451
displaying allocation information 2-356
Internet Group Management Protocol
IP ARP
apply ARP ACL to VLAN 2-104
clearing status of log buffer 2-22
clear inspection statistics 2-23
control packet logging 2-114
enable dynamic inspection 2-113
limit rate of incoming requests 2-106
set per-port config trust state 2-110
show status of dynamic ARP inspection 2-256
show status of log buffer 2-259
IPC
debugging IPC activities 2-46
IP DHCP Snooping
IP multicast
displaying multicast routing table information 2-276
IP source binding
add or delete 2-144
displays bindings 2-281
IP source guard
debug command 2-49
display configuration and filters 2-282
enable on DHCP snooping 2-147
IPX
See Cisco IOS AppleTalk and Novell IPX Command Reference, Release 12.1
J
Jumbo frames
enabling jumbo frames 2-162
L
LACP
deselecting channeling protocol 2-13
enabling LACP on an interface 2-13
setting channeling protocol 2-13
setting system priority 2-150
setting system-priority 2-150
Layer 2
display ACL configuration 2-289
Layer 2 interface type
specifying a nontrunking, nontagged single VLAN Layer 2 interface 2-412
specifying a trunking VLAN Layer 2 interface 2-412
Layer 2 switching
enabling voice VLANs 2-407
modifying switching characteristics 2-407
Layer 2 traceroute
IP addresses 2-430
Layer 3 switching
displaying administrative and operational status of a Layer 3 switching port 2-252
log buffer
show status 2-259
logging
ip arp inspection vlan command 2-114
M
MAC Access Control Lists
MAC ACLs
define extended MAC access list 2-151
displaying MAC ACL information 2-354
naming an ACL 2-151
MAC address filtering
configuring 2-155
disabling 2-155
enabling 2-155
MAC address table
adding static entries 2-157
clearing dynamic entries 2-31
configuring aging time 2-154
displaying dynamic table entry information 2-294
displaying entry count 2-293
displaying information 2-290
displaying interface-based information 2-296
displaying multicast information 2-298
displaying protocol-based information 2-300
displaying static table entry information 2-302
displaying the MAC address aging time 2-292
displaying VLAN-based information 2-304
removing static entries 2-157
MAC address tables
adding static entries 2-155
disabling IGMP snooping on static MAC addresses 2-155
removing static entries 2-155
mac-address-table static 2-155
MAC address unicast filtering
dropping unicast traffic for a MAC 2-155
mapping secondary VLANs to MST instance 2-183
mapping VLAN(s) to an MST instance 2-98
match subcommand
accessing 2-15
maximum transmission unit (MTU)
displaying the system MTU setting 2-347
setting the maximum Layer 2 payload size 2-426
MD5
verifying MD5 signature 2-442
message digest 5
MFIB
clearing ip mfib counters 2-28
clearing ip mfib fastdrop 2-29
displaying all active MFIB routes 2-273
displaying MFIB fastdrop table entries 2-275
enabling IP MFIB fastdrops 2-141
mode
switching between PVST+, MST, and Rapid PVST 2-380
modes
access-group 2-2
show access-group interface 2-211
module reset
resetting a module by turning the power off and then on 2-97
--More-- prompt
filter 1-6
search 1-7
MST
designating the primary and secondary root 2-388
displaying MST protocol information 2-342
displaying region configuration information 2-342
displaying spanning tree information 2-342
entering MST configuration submode 2-382
setting configuration revision number 2-208
setting path cost and port priority for instances 2-381
setting the bridge priority and timer value 2-388
setting the bridge priority and timer value for the instance 2-388
setting the forward delay timer for all instances 2-384
setting the hello-time delay timer for all instances 2-385
setting the max-age timer for all instances 2-386
setting the MST region name 2-163
specifying the maximum number of hops in a region before a BPDU is discarded 2-387
switching between PVST+ and Rapid PVST spanning tree modes 2-380
using the MST configuration submode name command 2-163
using the MST configuration submode revision command 2-208
MTU
displaying global MTU settings 2-347
multicast/unicast packets
prevent forwarding 2-411
Multicast Forwarding Information Base (MFIB)
multiple-character patterns 1-8
multiple hosts on authorized port 2-79
Multiple Spanning Tree (MST)
N
NetFlow
enabling NetFlow statistics 2-142
include infer fields in routing statistics 2-142
next-hop
displaying CEF VLAN information 2-260
no form of a command, using 1-6
NVRAM
debugging NVRAM activities 2-52
P
packet forwarding
prevent unknown packets 2-411
PACL
access-group mode 2-2
paging prompt
PAgP
clearing port channel information 2-32
debugging PAgP activity 2-53
deselecting channeling protocol 2-13
displaying port channel information 2-310
hot standby mode
returning to defaults 2-165
selecting ports 2-165
input interface of incoming packets
learning 2-164
returning to defaults 2-164
setting channeling protocol 2-13
parentheses 1-11
password
establishing enhanced password security 2-441
setting username 2-441
PBR
PM activities
debugging 2-56
disabling debugging 2-56
Policy Based Routing (PBR)
Port Aggregation Protocol
port-based authentication
debug messages, display 2-42
enabling 802.1X 2-80
manual control of authorization state 2-80
multiple hosts on authorized port 2-79
periodic re-authentication
enabling 2-83
re-authenticating 802.1X-enabled ports 2-82
statistics and status display 2-223
switch-to-client frame-retransmission number 2-78
port channel
displaying information 2-310
load distribution method
resetting to defaults 2-170
setting 2-170
port-channel
accessing 2-100
creating 2-100
port range
executing 2-101
Port Security
debugging ports security 2-57
port security
enabling 2-414
filter source IP and MAC addresses 2-147
setting action upon security violation 2-414
setting the rate limit for bad packets 2-414
Port Trust Device
displaying 2-323
POST
Power-On-Self-Test results and online diagnostics
displaying diagnostics 2-221
power status
displaying 2-317
displaying inline power 2-317
displaying power status 2-317
power supply
configuring combined and redundant power on the Catalyst 4507R 2-176
configuring the power redundancy mode on the Catalyst 4507R 2-178
display power status 2-317
display Serial Electrically Erasable Programmable Read Only Memory (SEEPROM) 2-237
setting inline power state 2-172
Private VLAN
privileged EXEC mode, summary 1-5
prompts
system 1-5
PVLANs
configuring isolated and primary PVLANs 2-179
disabling sticky-ARP 2-145
displaying map information for VLAN SVIs 2-250
displaying PVLAN information 2-358
enabling interface configuration mode 2-412
enabling sticky-ARP 2-145
mapping a primary and secondary VLAN to the same SVI 2-181
specifying host ports 2-412
specifying promiscuous ports 2-412
PVLAN trunk
setting trunk characteristics in interface trunk mode 2-423
PVST+
switching between PVST and MST 2-380
Q
QoS
accessing the QoS policy map configuration mode to configure a QoS policy map 2-168
account Layer 2 encapsulation 2-186
attaching a policy-map to an interface 2-209
automatic configuration 2-7
clearing global and per interface aggregate QoS counters 2-33
configure auto 2-7
defining a named aggregate policer for use in policy maps 2-188
defining default CoS value on an interface 2-191
defining the ingress CoS-to-DSCP mapping for trusted interfaces 2-195
displaying aggregate policer information 2-321
displaying class maps information 2-220
displaying configuration information 2-215
displaying policy map information 2-312
displaying QoS information 2-320
displaying QoS map information 2-324
displaying statistics and configurations of input and output policies attached to an interface 2-313
enabling per-VLAN QoS for a Layer 2 interface 2-201
enabling QoS global configuration mode on the switch 2-184
enabling QoS on an interface 2-185
mapping DSCP values to selected transmit queues 2-196
mapping egress DSCP-to-CoS 2-196
mapping the DSCP-to-CoS value 2-196
setting the mapping of policed DSCP values to marked down DSCP values 2-198
setting the QoS trust state on an interface 2-199
show auto command 2-215
QoS CoS
defining default CoS value on an interface 2-191
qos dbl 2-192
question command 1-1
queueing information
displaying 2-323
R
Rapid PVST
switching between PVST and MST 2-380
re-authenticating 802.1X-enabled ports 2-82
re-authentication
periodic 2-83
reboots
restore bindings across 2-118
redundancy
changing from active to standby supervisor engine 2-203
displaying information 2-326
displaying redundancy facility information 2-326
displaying RF client list 2-326
displaying RF operational counters 2-326
displaying RF states 2-326
enabling automatic synchronization of the configuration files in NVRAM 2-10
entering main CPU mode to manually synchronize the configurations on the two supervisor engines 2-157
entering redundancy configuration mode to access main CPU 2-202
forcing switchover to standby supervisor engine 2-203
synchronizing automatically the primary and secondary route processor configurations 2-157
related documentation xiii
renew commands
ip dhcp snooping database 2-206
resetting PVLAN trunk
setting switchport in interface configuration mode to trunk 2-412
ROM monitor mode,
summary 1-6
root guard
displaying root inconsistency status 2-337
Route Processor Redundancy (RPR)
S
saving configuration changes 1-11
secure ports, limitations 2-415
show commands
filtering parameters 1-7
ip verify source 2-282
searching and filtering 1-6
show ip dhcp snooping 2-261
show monitor command 2-308
show dot1x command 2-223
show errdisable detect command 2-229
show interfaces capabilities command 2-243
show interfaces counters command 2-246
show interface switchport command 2-252
show ip arp inspection command 2-256
show ip arp inspection log command 2-259
show platform commands
troubleshooting a problem 1-11
show port security command 2-315
show qos interface command 2-323
Simple Network Management Protocol
single-character patterns
special characters 1-7
slaveslot0
displaying information about the file system on the standby supervisor 2-333
slot0
displaying information about the slot0
file system 2-335
SMF
debugging address insertions and deletions 2-59
SNMP
debugging spanning tree activities 2-60
ifIndex persistence
clearing previously interface configuration mode SNMP ifIndex commands 2-365
clearing SNMP ifIndex commands 2-365
disabling globally 2-369
disabling on an interface 2-366
enabling globally 2-369
enabling on an interface 2-366
informs
disabling 2-367
enabling 2-367
traps
disabling 2-367
enabling 2-367
SNMP trap
configure to send when storm occurs 2-405
software MAC filter
SPAN commands
configuring a SPAN session to monitor 2-159
displaying SPAN session information 2-346, 2-406
SPAN enhancements
displaying status 2-308
spanning-tree mode command 2-380
Spanning Tree Protocol
SPAN session
specify encap type 2-159
turn off host learning based on ingress packets 2-159
SPAN session information
displaying 2-308
special characters
anchoring, table 1-10
sticky-ARP
disabling on PVLANs 2-145
enabling on PVLANs 2-145
storm control
broadcast, enabling 2-405
configure for action when storm occurs 2-405
disabling suppression mode 2-229
display settings 2-345
display with show interfaces counters 2-246
enable timer to recover from error disable 2-91
enabling 2-405
enabling suppression mode 2-229
multicast, enabling 2-405
set high and low levels 2-405
setting suppression level 2-229
unicast, enabling 2-405
storm-control command 2-405
STP
configuring link type for a port 2-378
debugging all activities 2-60
debugging spanning tree activities 2-60
debugging spanning tree BackboneFast events 2-61
debugging spanning tree UplinkFast 2-64
displaying active interfaces only 2-337
displaying BackboneFast status 2-337
displaying bridge status and configuration 2-337
displaying default path cost method 2-337
displaying spanning tree debug messages 2-60
displaying status information 2-337
displaying status per VLAN 2-337
displaying summary of interface information 2-337
displaying UplinkFast status 2-337
enabling BPDU filtering by default on all PortFast ports 2-393
enabling BPDU filtering on an interface 2-371
enabling BPDU guard as a default on all PortFast ports in global configuration mode 2-395
enabling BPDU guard on an interface 2-373
enabling detection of STP misconfiguration and displaying an error message 2-375
enabling extended system ID on chassis that support 4095 MAC addresses 2-376
enabling loop guard as a default for all ports on a bridge 2-379
enabling loop guard as a default on all ports 2-379
enabling PortFast as default on all access ports 2-396
enabling PortFast mode, where the interface is put into the forwarding state upon linkup without waiting for the timer to expire 2-391
enabling root guard 2-377
enabling spanning tree BackboneFast 2-370
enabling spanning tree on a per VLAN basis 2-400
enabling spanning tree UplinkFast 2-398
set an interface priority when two bridges compete for position as the root bridge 2-397
setting default spanning tree pathcost calculation method 2-390
setting path cost on an interface for spanning tree calculations. 2-374
subinterface configuration mode, summary 1-6
SVI
creating a Layer 3 interface on a VLAN 2-103
switchport 2-423
switchport block command 2-411
switchport interfaces
displaying administrative and operational status of a Layer 3 switching port 2-252
switchport port-security aging command 2-417
switchport port-security command 2-414
switch shim
debugging 2-62
disabling debugging 2-62
switch virtual interface
sw-vlan 2-65
system prompts 1-5
T
Tab key
command completion 1-1
tables
characters with special meaning 1-7
mac access-list extended subcommands 2-151
match syntax description 2-16
multipliers 1-9
relationship between duplex and speed commands 2-403
show vlan command output fields 2-359
show vtp command output fields 2-362
special characters 1-9
special characters used for anchoring 1-10
speed command options 2-403
TAC
displaying information useful to TAC 2-348
TCAM
debugging spanning tree activities 2-60
temperature readings
displaying information 2-226
timer information 2-230
traps, enabling 2-367
trunk interfaces
displaying trunk interfaces information 2-254
trust state
setting 2-110
TX queues
allocating bandwidth 2-433
returning to default values 2-433
setting priority to high 2-433
specifying burst size 2-433
specifying traffic rate 2-433
U
UDLD
enabling UDLD by default on all fiber interfaces 2-435
enabling UDLD on an individual interface 2-437
preventing a fiber interface from being enabled 2-437
resetting all ports shutdown by UDLD 2-439
setting the message timer 2-435
Unidirectional Link Detection protocol
unknown multicast traffic, preventing 2-411
unknown unicast traffic, preventing 2-411
user EXEC mode, summary 1-5
username
setting password and privilege level 2-441
V
VACL
access-group mode 2-2
VACLs
applying VLAN access maps 2-450
displaying VLAN access map information 2-354
specifying drop or forward action in a VLAN access map 2-3
specifying the match clause by selecting one or more ACLs for a VLAN access-map sequence 2-158
using a VLAN filter 2-450
VLAN
apply an ARP ACL 2-104
configuring a specific VLAN in configuration mode 2-444
displaying CEF information 2-260
displaying CEF next-hop information 2-260
displaying information on dynamically learned and manually configured VLAN switch interfaces 2-269, 2-272
displaying information sorted by group IP address 2-269
displaying IP address and version information 2-269
displaying Layer 2 VLAN information 2-351
displaying statistical information 2-306
displaying VLAN information 2-353
enable dynamic ARP inspection 2-113
enabling guest per-port 2-75
entering VLAN configuration mode 2-448
VLAN Access Control Lists (VACLs)
VLAN access map
VLAN database
resetting 2-207
VLAN debugging
limiting VLAN output for debugging
disabling debugging 2-41
VLAN manager
debugging 2-65
disabling debugging 2-65
IOS file system error tests
debugging 2-66
disabling debugging 2-66
VLAN query protocol (VQPC)
debugging 2-71
VLANs
clearing
counters 2-34
clearing the hardware logic 2-20
configuring
internal allocation scheme 2-451
displaying
internal VLAN allocation information 2-356
entering VLAN configuration mode 2-448
VMPS
configuring servers 2-455
reconfirming dynamic VLAN assignments 2-453
vmps reconfirm (global configuration) command 2-452
vmps reconfirm (privileged EXEC) command 2-453
vmps retry command 2-454
vmps server command 2-455
Voice VLANs
enabling voice VLANs 2-407
VoIP
configure auto-QoS 2-7
VQP
per-server retry count 2-454
reconfirming dynamic VLAN assignments 2-453
VTP
configuring the administrative domain name 2-459
configuring the device in VTP client mode 2-458
configuring the device in VTP server mode 2-462
configuring the device in VTP transparent mode 2-463
creating a VTP domain password 2-460
displaying domain information 2-361
displaying statistics information 2-361
enabling pruning in the VLAN database 2-461
enabling VTP version 2 mode 2-464
modifying the VTP configuration storage file name 2-457
VTP protocol code
activating debug messages 2-69
deactivating debug messages 2-69