The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Numerics
802.1X
and switchport modes 2-360
See also port-based authentication
A
aaa authentication dot1x command 2-1
AAA methods 2-1
abort command 2-401
access control entries
access control lists
access groups, IP 2-80
access map configuration mode 2-99
access mode 2-359
access ports 2-359
ACLs
deny 2-52
displaying 2-180
for non-IP protocols 2-93
matching 2-99
permit 2-149
action command 2-3
address aliasing 2-140
aggregate-port learner 2-145
allowed VLANs 2-372
apply command 2-401
archive copy-sw command 2-5
archive download-sw command 2-7
archive tar command 2-10
archive upload-sw command 2-13
audience xv
authorization state of controlled port 2-58
autonegotiation of duplex mode 2-65
B
BackboneFast, for STP 2-317
boot (boot loader) command A-2
boot auto-copy-sw command 2-15
boot boothlpr command 2-16
boot config-file command 2-17
boot enable-break command 2-18
boot helper command 2-19
boot helper-config file command 2-20
booting
displaying environment variables 2-183
interrupting 2-18
IOS image 2-23
manually 2-21
boot loader
accessing A-1
booting
helper image 2-19
IOS image A-2
directories
creating A-16
displaying a list of A-7
removing A-20
displaying
available commands A-12
memory heap utilization A-14
version A-27
environment variables
described A-21
displaying settings A-21
location of A-23
setting A-21
unsetting A-25
files
copying A-5
deleting A-6
displaying a list of A-7
displaying the contents of A-4, A-17, A-24
renaming A-18
file system
formatting A-10
initializing Flash A-9
running a consistency check A-11
loading helper images A-13
prompt A-1
resetting the system A-19
boot manual command 2-21
boot private-config-file command 2-22
boot system command 2-23
BPDU filtering, for spanning tree 2-318, 2-331
BPDU guard, for spanning tree 2-320, 2-331
broadcast storm control 2-348
broadcast traffic counters 2-221
C
candidate switches
cat (boot loader) command A-4
caution, description xvi
channel-group command 2-24
Cisco Technical Assistance Center xix
class command 2-27
class-map command 2-29
class maps
creating 2-29
defining the match criteria 2-101
displaying 2-185
class of service
clear mac-address-table command 2-31
clear pagp command 2-32
clear vmps statistics command 2-33
clear vtp counters command 2-34
cluster commander-address command 2-35
cluster discovery hop-count command 2-37
cluster enable command 2-38
cluster holdtime command 2-40
cluster member command 2-41
cluster outside-interface command 2-43
cluster run command 2-44
clusters
adding candidates 2-41
binding to HSRP group 2-45
building manually 2-41
communicating with
devices outside the cluster 2-43
members by using Telnet 2-161
debug messages, display B-2
displaying
candidate switches 2-188
debug messages B-2
member switches 2-190
status 2-186
hop-count limit for extended discovery 2-37
HSRP standby groups 2-45
redundancy 2-45
SNMP trap 2-310
cluster standby-group command 2-45
cluster timer command 2-47
command modes defined 1-2
command switch
configuration files
password recovery disable considerations A-1
specifying the name 2-17, 2-22
configuring multiple interfaces 2-75
config-vlan mode
commands 2-387
description 1-4
entering 2-386
summary 1-2
conventions
command xvi
for examples xvi
publication xvi
text xvi
copy (boot loader) command A-5
CoS
assigning default value to incoming packets 2-107
overriding the incoming value 2-107
CoS-to-DSCP map 2-111
CPU ASIC statistics, displaying 2-192
CPU statistics, displaying 2-192
D
debug cluster command B-2
debug dot1x command B-4
debug dtp command B-6
debug etherchannel command B-7
debug interface command B-8
debug ip igmp filter command B-9
debug ip igmp max-groups command B-10
debug ip igmp snooping command B-11
debug mac-notification command B-12
debug matm command B-13
debug monitor command B-14
debug mvrdbg command B-15
debug nvram command B-16
debug pagp command B-17
debug platform acl command B-18
debug platform cli-redirection main command B-19
debug platform configuration command B-20
debug platform cpu-queues command B-21
debug platform device-manager command B-23
debug platform dot1x command B-24
debug platform etherchannel command B-25
debug platform fallback-bridging command B-26
debug platform forw-tcam command B-27
debug platform ipc command B-34
debug platform ip igmp snooping command B-28
debug platform ip multicast command B-30
debug platform ip unicast command B-32
debug platform led command B-35
debug platform matm command B-36
debug platform messaging command B-37
debug platform phy command B-38
debug platform pm command B-39
debug platform port-asic command B-41
debug platform port-security command B-42
debug platform qos-acl-tcam command B-43
debug platform remote-commands command B-44
debug platform resource-manager command B-45
debug platform snmp command B-46
debug platform span command B-47
debug platform stack-manager command B-48
debug platform supervisor-asic command B-49
debug platform sw-bridge command B-50
debug platform tcam command B-51
debug platform udld command B-54
debug platform vlan command B-55
debug pm command B-56
debug port-security command B-58
debug qos-manager command B-59
debug spanning-tree backbonefast command B-62
debug spanning-tree bpdu command B-63
debug spanning-tree bpdu-opt command B-64
debug spanning-tree command B-60
debug spanning-tree switch command B-65
debug spanning-tree uplinkfast command B-67
debug sw-vlan command B-68
debug sw-vlan ifs command B-70
debug sw-vlan notification command B-71
debug sw-vlan vtp command B-73
debug udld command B-75
debug vqpc command B-77
define interface-range command 2-48
delete (boot loader) command A-6
delete command 2-50
deny command 2-52
detect mechanism, causes 2-67
dir (boot loader) command A-7
directories, deleting 2-50
documentation
feedback xviii
obtaining
CD-ROM xvii
world wide web xvii
ordering xviii
related xvii
document conventions xvi
dot1x default command 2-55
dot1x max-req command 2-56
dot1x multiple-hosts command 2-57
dot1x port-control command 2-58
dot1x re-authenticate command 2-60
dot1x re-authentication command 2-61
dot1x timeout quiet-period command 2-62
dot1x timeout re-authperiod command 2-63
dot1x timeout tx-period command 2-64
dropping packets, with ACL matches 2-3
DSCP-to-CoS map 2-111
DSCP-to-DSCP-mutation map 2-111
DTP 2-360
DTP flap
error detection for 2-67
error recovery timer 2-69
duplex command 2-65
dynamic-access ports
configuring 2-355
restrictions 2-356
dynamic auto VLAN membership mode 2-359
dynamic desirable VLAN membership mode 2-359
Dynamic Trunking Protocol
E
EAP-request/identity frame
maximum number to send 2-56
response time before retransmitting 2-64
encapsulation methods 2-372
environment variables, displaying 2-183
errdisable detect cause command 2-67
errdisable recovery command 2-69
error conditions, displaying 2-209
error disable detection 2-67
error-disabled interfaces, displaying 2-216
EtherChannel
assigning Ethernet interface to channel group 2-24
creating port-channel logical interface 2-73
debug EtherChannel/PAgP, display B-7
debug platform-specific events, display B-25
displaying 2-213
interface information, displaying 2-216
load-distribution methods 2-158
PAgP
aggregate-port learner 2-145
clearing channel-group information 2-32
debug messages, display B-17
displaying 2-270
error detection for 2-67
error recovery timer 2-69
learn method 2-145
modes 2-24
physical-port learner 2-145
priority of interface for transmitted traffic 2-147
Ethernet controller, internal register display 2-194
Ethernet statistics, collecting 2-167
examples, conventions for xvi
exit command 2-401
extended discovery of candidate switches 2-37
extended-range VLANs
and allowed VLAN list 2-372
and pruning-eligible list 2-372
configuring 2-386
extended system ID for STP 2-324
F
fan information, displaying 2-206
feedback to Cisco Systems, web xviii
file name, VTP 2-410
files, deleting 2-50
flash_init (boot loader) command A-9
flowcontrol command 2-71
format (boot loader) command A-10
forwarding packets, with ACL matches 2-3
forwarding results, display C-5
frame forwarding information, displaying C-5
fsck (boot loader) command A-11
G
global configuration mode 1-2, 1-4
H
hardware ACL statistics 2-180
help (boot loader) command A-12
hop-count limit for clusters 2-37
host connection, port configuration 2-358
HSRP
binding HSRP group to cluster 2-45
standby group 2-45
I
IGMP filters
applying 2-84
debug messages, display B-9
IGMP groups, setting maximum 2-85
IGMP maximum groups, debugging B-10
IGMP profiles
creating 2-86
displaying 2-224
IGMP snooping
displaying 2-225, 2-227, 2-228
enabling 2-88
images
Immediate-Leave feature, MVR 2-142
Immediate-Leave processing 2-88
interface command 2-78
interface configuration mode 1-2, 1-4
interface port-channel command 2-73
interface range command 2-75
interface-range macros 2-48
interfaces
assigning Ethernet interface to channel group 2-24
configuring 2-65
configuring multiple 2-75
creating port-channel logical 2-73
debug messages, display B-8
disabling 2-308
displaying the MAC address table 2-240
restarting 2-308
interface speed, configuring 2-340
internal registers, displaying 2-194, 2-198
invalid GBIC
error detection for 2-67
error recovery timer 2-69
ip address command 2-82
IP addresses, setting 2-82
IP address matching 2-99
ip igmp filter command 2-84
ip igmp max-groups command 2-85
ip igmp profile command 2-86
ip igmp snooping command 2-88
IP multicast addresses 2-139
IP-precedence-to-DSCP map 2-111
J
L
Layer 2 mode, enabling 2-353
Layer 3 mode, enabling 2-353
line configuration mode 1-3, 1-5
link flap
error detection for 2-67
error recovery timer 2-69
load_helper (boot loader) command A-13
load-distribution methods for EtherChannel 2-158
logging file command 2-91
logical interface 2-73
loopback, error recovery timer 2-69
loop guard, for spanning tree 2-325, 2-327
M
MAC access list configuration mode 2-93
mac access-list extended command 2-93
MAC access lists 2-52
MAC addresses
displaying
aging time 2-234
all 2-232
dynamic 2-238
Layer 2 multicast entries 2-242
notification settings 2-244
number of addresses in a VLAN 2-236
per interface 2-240
per VLAN 2-248
static 2-246
static and dynamic entries 2-230
dynamic
aging time 2-95
deleting 2-31
displaying 2-238
enabling MAC address notification 2-96
matching 2-99
static
adding and removing 2-98
displaying 2-246
tables 2-232
MAC address notification, debugging B-12
mac address-table aging-time 2-99
mac-address-table aging-time command 2-95
mac-address-table notification command 2-96
mac-address-table static command 2-98
macros, interface range 2-48, 2-75
manual
audience xv
purpose of xv
maps
QoS
defining 2-111
displaying 2-257
VLAN
creating 2-398
defining 2-99
displaying 2-300
match (access-map configuration) command 2-99
match (class-map configuration) command 2-101
maximum transmission unit
member switches
memory (boot loader) command A-14
mkdir (boot loader) command A-16
mls qos aggregate-policer command 2-105
mls qos command 2-103
mls qos cos command 2-107
mls qos dscp-mutation command 2-109
mls qos map command 2-111
mls qos queue-set output buffers command 2-114
mls qos queue-set output threshold command 2-116
mls qos srr-queue input bandwidth command 2-118
mls qos srr-queue input buffers command 2-120
mls qos-srr-queue input cos-map command 2-122
mls qos srr-queue input dscp-map command 2-124
mls qos srr-queue input priority-queue command 2-126
mls qos srr-queue input threshold command 2-128
mls qos-srr-queue output cos-map command 2-130
mls qos srr-queue output dscp-map command 2-132
mls qos trust command 2-134
mode, MVR 2-139
Mode button, and password recovery 2-170
modes, commands 1-2
monitor session command 2-136
more (boot loader) command A-17
MTU
configuring size 2-377
displaying global setting 2-290
multicast group address, MVR 2-142
multicast groups, MVR 2-140
multicast router learning method 2-88
multicast router ports, configuring 2-88
multicast storm control 2-348
multicast traffic counters 2-221
multicast VLAN, MVR 2-139
multicast VLAN registration
multiple hosts on authorized port 2-57
MVR
and address aliasing 2-140
configuring 2-139
configuring interfaces 2-142
debug messages, display B-15
displaying 2-264
displaying interface information 2-266
members, displaying 2-268
mvr (global configuration) command 2-139
mvr (interface configuration) command 2-142
mvr vlan group command 2-143
N
native VLANs 2-372
nonegotiate
DTP messaging 2-361
speed 2-340
non-IP protocols
denying 2-52
forwarding 2-149
non-IP traffic access lists 2-93
non-IP traffic forwarding
denying 2-52
permitting 2-149
normal-range VLANs 2-386, 2-392
note, description xvi
P
PAgP
pagp learn-method command 2-145
pagp port-priority command 2-147
password-recovery mechanism, enabling and disabling 2-170
permit command 2-149
physical-port learner 2-145
PIM-DVMRP, as multicast router learning method 2-88
police aggregate command 2-154
police command 2-152
policed-DSCP map 2-111
policy-map command 2-156
policy maps
applying to an interface 2-172, 2-177
creating 2-156
displaying 2-272
policers
displaying 2-251
for a single class 2-152
for multiple classes 2-105, 2-154
policed-DSCP map 2-111
traffic classification
defining the class 2-27
defining trust states 2-379
setting DSCP or IP precedence values 2-175
Port Aggregation Protocol
port-based authentication
AAA method list 2-1
debug messages, display B-4
enabling 802.1X 2-58
manual control of authorization state 2-58
multiple hosts on authorized port 2-57
periodic re-authentication
enabling 2-61
time between attempts 2-63
quiet period between failed authentication exchanges 2-62
re-authenticating 802.1X-enabled ports 2-60
resetting global 802.1X parameters 2-55
statistics and status display 2-200
switch-to-client frame-retransmission number 2-56
switch-to-client retransmission time 2-64
port-channel load-balance command 2-158
Port Fast, for spanning tree 2-333
port ranges, defining 2-48
ports, debugging B-56
ports, protected 2-370
port security
aging 2-366
debug messages, display B-58
enabling 2-363
violation error recovery 2-69
port trust states for QoS 2-134
port types, MVR 2-142
power information, displaying 2-206
priority value, stack member 2-287, 2-350
protected ports, displaying 2-220
pruning
VLANs 2-372
VTP
displaying interface information 2-216
pruning-eligible VLAN list 2-374
publications for products, technologies, and network solutions xx
Q
QoS
class maps
creating 2-29
defining the match criteria 2-101
displaying 2-185
defining the CoS value for an incoming packet 2-107
displaying configuration information 2-250
DSCP trusted ports
applying DSCP-to-DSCP-mutation map to 2-109
defining DSCP-to-DSCP-mutation map 2-111
egress queues
allocating buffers 2-114
defining the CoS output queue threshold map 2-130
defining the DSCP output queue threshold map 2-132
displaying buffer allocations 2-254
displaying CoS output queue threshold map 2-257
displaying DSCP output queue threshold map 2-257
displaying queueing strategy 2-254
displaying queue-set settings 2-260
enabling bandwidth shaping and scheduling 2-344
enabling bandwidth sharing and scheduling 2-346
limiting the maximum output on a port 2-342
mapping a port to a queue-set 2-160
mapping CoS values to a queue and threshold 2-130
mapping DSCP values to a queue and threshold 2-132
setting maximum and reserved memory allocations 2-116
setting WTD thresholds 2-116
enabling 2-103
ingress queues
allocating buffers 2-120
assigning SRR scheduling weights 2-118
defining the CoS input queue threshold map 2-122
defining the DSCP input queue threshold map 2-124
displaying buffer allocations 2-254
displaying CoS input queue threshold map 2-257
displaying DSCP input queue threshold map 2-257
displaying queueing strategy 2-254
displaying settings for 2-252
enabling the priority queue 2-126
mapping CoS values to a queue and threshold 2-122
mapping DSCP values to a queue and threshold 2-124
setting WTD thresholds 2-128
maps
defining 2-111, 2-122, 2-124, 2-130, 2-132
displaying 2-257
policy maps
applying an aggregate policer 2-154
applying to an interface 2-172, 2-177
creating 2-156
defining policers 2-105, 2-152
displaying policers 2-251
displaying policy maps 2-272
policed-DSCP map 2-111
setting DSCP or IP precedence values 2-175
traffic classifications 2-27
trust states 2-379
port trust states 2-134
statistics
in-profile and out-of-profile packets 2-254
packets enqueued or dropped 2-254
sent and received CoS values 2-254
sent and received DSCP values 2-254
quality of service
querytime, MVR 2-139
queue-set command 2-160
R
rcommand command 2-161
re-authenticating 802.1X-enabled ports 2-60
re-authentication
periodic 2-61
time between attempts 2-63
receiver ports, MVR 2-142
receiving flow-control packets 2-71
recovery mechanism
causes 2-69
timer interval 2-69
redundancy for cluster switches 2-45
reload command 2-163
remote command command 2-164
remote-span command 2-165
Remote Switched Port Analyzer
rename (boot loader) command A-18
reset (boot loader) command A-19
reset command 2-401
resource templates, displaying 2-278
rmdir (boot loader) command A-20
rmon collection stats command 2-167
root guard, for spanning tree 2-325
routed ports
IP addresses on 2-83
RSPAN
configuring 2-136
displaying 2-262
filter RSPAN traffic 2-136
remote-span command 2-165
sessions
add interfaces to 2-136
displaying 2-262
start new 2-136
S
sdm prefer command 2-168
secure ports, limitations 2-364
sending flow-control packets 2-71
service password-recovery command 2-170
service-policy command 2-172
session command 2-174
set (boot loader) command A-21
set command 2-175
setup command 2-177
show access-lists command 2-180
show boot command 2-183
show changes command 2-401
show class-map command 2-185
show cluster candidates command 2-188
show cluster command 2-186
show cluster members command 2-190
show controllers cpu-interface command 2-192, 2-194
show controllers tcam command 2-198
show current command 2-401
show dot1x command 2-200
show dtp 2-204
show env command 2-206
show errdisable detect command 2-208
show errdisable flap-values command 2-209
show errdisable recovery command 2-211
show etherchannel command 2-213
show interfaces command 2-216
show interfaces counters command 2-221
show ip igmp profile command 2-224
show ip igmp snooping command 2-225, 2-227, 2-228
show mac-address-table address command 2-232
show mac-address-table aging time command 2-234
show mac-address-table command 2-230
show mac-address-table count command 2-236
show mac-address-table dynamic command 2-238
show mac-address-table interface command 2-240
show mac address-table multicast command 2-242
show mac-address-table notification command 2-244
show mac-address-table static command 2-246
show mac-address-table vlan command 2-248
show mls qos aggregate-policer command 2-251
show mls qos command 2-250
show mls qos input-queue command 2-252
show mls qos interface command 2-254
show mls qos maps command 2-257
show mls qos queue-set command 2-260
show monitor command 2-262
show mvr command 2-264
show mvr interface command 2-266
show mvr members command 2-268
show pagp command 2-270
show platform acl command C-2
show platform configuration command C-3
show platform etherchannel command C-4
show platform forward command C-5
show platform igmp snooping command C-7
show platform ipc trace command C-12
show platform ip multicast command C-9
show platform ip unicast command C-10
show platform layer4op command C-13
show platform mac-address-table command C-14
show platform messaging command C-15
show platform monitor command C-16
show platform mvr table command C-17
show platform pm command C-23
show platform port-asic command C-18
show platform port-security command C-24
show platform qos command C-25
show platform resource-manager command C-26
show platform snmp counters command C-28
show platform spanning-tree command C-29
show platform stack-manager command C-30
show platform tcam command C-32
show platform vlan command C-35
show policy-map command 2-272
show port security command 2-274
show proposed command 2-401
show running-config vlan command 2-276
show sdm prefer command 2-278
show spanning-tree command 2-280
show storm-control command 2-285
show switch command 2-287
show system mtu command 2-290
show trust command 2-379
show udld command 2-291
show version command 2-294
show vlan access-map command 2-300
show vlan command 2-296
show vlan command fields 2-297
show vlan filter command 2-301
show vmps command 2-302
show vtp command 2-304
shutdown command 2-308
shutdown vlan command 2-309
SNMP host, specifying 2-312
SNMP informs, enabling the sending of 2-310
snmp-server enable traps command 2-310
snmp-server host command 2-312
snmp trap mac-notification command 2-315
SNMP traps
enabling MAC address notification trap 2-315
enabling the MAC address notification feature 2-96
enabling the sending of 2-310
software images
copying 2-5
deleting 2-50
downloading 2-7
uploading 2-13
software version, displaying 2-294
source ports, MVR 2-142
SPAN
configuring 2-136
debug messages, display B-14
displaying 2-262
filter SPAN traffic 2-136
sessions
add interfaces to 2-136
displaying 2-262
start new 2-136
spanning-tree backbonefast command 2-317
spanning-tree bpdufilter command 2-318
spanning-tree bpduguard command 2-320
spanning-tree cost command 2-322
spanning-tree extend system-id command 2-324
spanning-tree guard command 2-325
spanning-tree loopguard default command 2-327
spanning-tree mode command 2-328
spanning-tree portfast (global configuration) command 2-331
spanning-tree portfast (interface configuration) command 2-333
spanning-tree port-priority command 2-329
Spanning Tree Protocol
spanning-tree uplinkfast command 2-335
spanning-tree vlan command 2-337
speed command 2-340
srr-queue bandwidth limit command 2-342
srr-queue bandwidth shape command 2-344
srr-queue bandwidth share command 2-346
stack member
access 2-174
number 2-351
priority value 2-350
reloading 2-163
stack member number 2-287
stacks, switch
reloading 2-163
stack member access 2-174
stack member number 2-287, 2-351
stack member priority value 2-287, 2-350
static-access ports, configuring 2-355
statistics, Ethernet group 2-167
storm-control command 2-348
STP
BackboneFast 2-317
debug messages, display
BackboneFast events B-62
optimized BPDUs handling B-64
spanning-tree activity B-60
switch shim B-65
transmitted and received BPDUs B-63
UplinkFast B-67
detection of indirect link failures 2-317
extended system ID 2-324
path cost 2-322
root port
accelerating choice of new 2-335
loop guard 2-325
preventing from becoming designated 2-325
restricting which can be root 2-325
root guard 2-325
UplinkFast 2-335
root switch
affects of extended system ID 2-324, 2-338
hello-time 2-337
interval between BDPU messages 2-337
interval between hello BPDU messages 2-337
max-age 2-337
port priority for selection of 2-329
primary or secondary 2-337
switch priority 2-337
state changes
blocking to forwarding state 2-333
enabling BPDU filtering 2-318, 2-331
enabling BPDU guard 2-320, 2-331
enabling Port Fast 2-331, 2-333
enabling timer to recover from error state 2-69
forward-delay time 2-337
length of listening and learning states 2-337
shutting down Port Fast-enabled ports 2-331
state information display 2-280
VLAN options 2-337
SVIs
creating 2-78
number supported 2-169
Switched Port Analyzer
switching characteristics
returning to interfaces 2-353, 2-361
switchport access command 2-355
switchport block command 2-357
switchport command 2-353
switchport host command 2-358
switchport mode command 2-359
switchport nonegotiate command 2-361
switchport port-security aging command 2-366
switchport port-security command 2-363
switchport priority extend command 2-368
switchport protected command 2-370
switchports, displaying 2-216
switchport trunk command 2-372
switchport voice vlan command 2-375
switch priority command 2-350
switch renumber command 2-351
system message logging, save message to Flash 2-91
system mtu command 2-377
system resource templates 2-168
T
TAC
inquiries xix
toll-free telephone numbers xx
website xix
tar files, creating, listing, and extracting 2-10
technical assistance
Cisco.com xviii
TAC xix
TAC website xix
toll-free telephone numbers xx
Telnetting to cluster switches 2-161
temperature information, displaying 2-206
templates, system resources 2-168
trunking, VLAN mode 2-359
trunk mode 2-359
trunk ports 2-359
trunks, to non-DTP device 2-360
trusted port states for QoS 2-134
type (boot loader) command A-24
U
UDLD
debug messages, display B-75
enable globally 2-381
enable per interface 2-383
error recovery timer 2-69
message timer 2-381
reset a shutdown interface 2-385
status 2-291
udld (global configuration) command 2-381
udld (interface configuration) command 2-383
udld reset command 2-385
unicast storm control 2-348
unicast traffic counters 2-221
UniDirectional Link Detection
unknown multicast traffic, preventing 2-357
unknown unicast traffic, preventing 2-357
unset (boot loader) command A-25
upgrading, software images 2-5, 2-7
UplinkFast, for STP 2-335
V
version (boot loader) command A-27
vlan (global configuration) command 2-386
vlan (VLAN configuration) command 2-392
vlan access-map command 2-398
VLAN access map configuration mode 2-398
VLAN access maps
actions 2-3
displaying 2-300
VLAN configuration
VLAN configuration mode
commands
VLAN 2-392
VTP 2-414
description 1-5
entering 2-400
summary 1-3
vlan database command 2-400
vlan filter command 2-403
VLAN filters, displaying 2-301
VLAN maps
applying 2-403
creating 2-398
defining 2-99
displaying 2-300
VLAN Query Protocol
VLANs
adding 2-386
debug messages, display
ISL B-71
VLAN IOS file system error tests B-70
VLAN manager activity B-68
VTP B-73
displaying configurations 2-276, 2-296
extended-range 2-386
MAC addresses
displaying 2-248
number of 2-236
restarting 2-309
saving the configuration 2-386
shutting down 2-309
SNMP traps for VTP 2-310, 2-312
suspending 2-309
variables 2-392
VLAN Trunking Protocol
VMPS
configuring servers 2-408
displaying 2-302
error recovery timer 2-69
reconfirming dynamic VLAN assignments 2-405
vmps reconfirm (global configuration) command 2-406
vmps reconfirm (privileged EXEC) command 2-405
vmps retry command 2-407
vmps server command 2-408
voice VLAN
configuring 2-375
setting port priority 2-368
VQP
and dynamic-access ports 2-356
clearing client statistics 2-33
displaying information 2-302
per-server retry count 2-407
reconfirmation interval 2-406
reconfirming dynamic VLAN assignments 2-405
VTP
changing characteristics 2-410
clearing pruning counters 2-34
configuring
file name 2-410
counters display fields 2-305
displaying information 2-304
enabling
saving the configuration 2-386, 2-396
statistics 2-304
status 2-304
status display fields 2-306
vtp (global configuration) command 2-410
vtp (VLAN configuration) command 2-414