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Catalyst 2950 and Catalyst 2955 Switch Command Reference, 12.1(22)EA11 and Later
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Index
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Preface
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Using the Command-Line Interface
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Catalyst 2950 and 2955 Switch Cisco IOS Commands - a through r
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Catalyst 2950 and 2955 Switch Cisco IOS Commands - s
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Catalyst 2950 and 2955 Switch Cisco IOS Catalyst 2950 and 2955 Switch Cisco IOS Commands - t through z \r\n
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Catalyst 2955 Alarm Commands
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Catalyst 2950 and 2955 Switch Boot Loader Commands
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Catalyst 2950 and 2955 Switch Debug Commands
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Table Of Contents
Numerics - A - B - C - D - E - F - G - H - I - J - L - M - N - O - P - Q - R - S - T - U - V - W -
Index
Numerics
802.1X Port Based Authentication
enabling guest VLAN supplicant 2-89
A
aaa accounting dot1x command 2-1
aaa authentication command 2-3
abort command 2-534
access control entries
access control lists
access control parameters
access groups
IP 2-128
MAC
applying ACL to interface 2-184
displaying 2-361
access-list (IP extended) command 2-5
access-list (IP standard) command 2-8
access-list configuration mode
deny 2-82
entering 2-130
permit 2-233
access ports 2-489
ACLs
IP
applying to interface 2-128
deny 2-82
permit 2-233
MAC
applying to interface 2-184
deny 2-85
displaying 2-266
permit 2-236
ACPs, displaying 2-369
aggregate-port learner 2-230
alarm command A-6
alarm facility fcs-hysteresis command A-2
alarm facility power-supply command A-3
alarm facility temperature command A-4
alarm profile
attaching to a port A-8
creating A-6
displaying A-12
alarm profile (global configuration) command A-6
alarm profile (interface configuration) command A-8
alarm profile configuration mode A-6
apply command 2-534
archive download-sw command 2-10
archive tar command 2-12
archive upload-sw command 2-15
authorization state of controlled port 2-101
autonegotiation of duplex mode 2-108
auto qos voip command 2-17
B
BackboneFast, for STP 2-432
boot boothlpr command 2-21
boot buffersize command 2-22
boot command B-2
boot config-file command 2-23
boot enable-break command 2-24
boot helper command 2-25
boot helper-config file command 2-26
booting
Cisco IOS image 2-29
interrupting 2-24
manually 2-27
booting, displaying environment variables 2-271
boot loader
accessing B-1
booting
Cisco IOS image B-2
helper image 2-25
directories
creating B-15
displaying a list of B-6
removing B-19
displaying
available commands B-11
memory heap utilization B-13
version B-26
environment variables
described B-20
displaying settings B-20
location of B-22
setting B-20
unsetting B-24
files
copying B-4
deleting B-5
displaying a list of B-6
displaying the contents of B-3, B-16, B-23
renaming B-17
file system
formatting B-9
initializing Flash B-8
running a consistency check B-10
loading helper images B-12
prompt B-1
resetting the system B-18
boot manual command 2-27
boot private-config-file command 2-28
boot system command 2-29
BPDU filtering, for spanning tree 2-433, 2-466
BPDU guard, for spanning tree 2-435, 2-466
broadcast suppression level
configuring 2-480
displaying 2-401
C
cat command B-3
channel-group command 2-30
channel-protocol command 2-33
Cisco SoftPhone
auto-QoS configuration 2-17
trusting packets sent from 2-216
class command 2-35
class-map command 2-37
class maps
creating 2-37
defining the match criteria 2-207
displaying 2-273
class of service
clear controllers ethernet-controller command 2-39
clear controllers lre command 2-41
clear controllers lre link monitor command 2-42
clear controllers lre log command 2-43
clear interface command 2-44
clear lacp command 2-45
clear LRE configuration events 2-43
clear LRE timer events 2-43
clear mac address-table command 2-47
clear pagp command 2-49
clear port-security command 2-50
clear spanning-tree counters command 2-52
clear spanning-tree detected-protocols command 2-53
clear vmps statistics command 2-54
clear vtp counters command 2-55
cluster commander-address command 2-56
cluster discovery hop-count command 2-58
cluster enable command 2-59
cluster holdtime command 2-60
cluster management-vlan command 2-61
cluster member command 2-62
cluster run command 2-64
clusters
adding candidates 2-62
binding to HSRP 2-65
building manually 2-62
communicating with members by using Telnet 2-254
displaying
candidate switches 2-277
member switches 2-279
status 2-275
heartbeat messages
duration after which switch declared down 2-60
interval between 2-67
hop-count limit for extended discovery 2-58
HSRP standby groups 2-65
redundancy 2-65
SNMP trap 2-424
cluster standby-group command 2-65
cluster timer command 2-67
command modes defined 1-2
command switch
configuration files
password recovery disable considerations B-1
setting the NVRAM size for 2-22
specifying the name 2-23
configuration files, private 2-28
configuring multiple interfaces2-124to 2-125
config-vlan mode
description 1-4
entering 2-521
summary 1-2
controller longreachethernet command 2-68
copy command B-4
CoS
default value, assigning to incoming packets 2-211
incoming value, overriding 2-211
priority queue, assigning values to 2-553
priority queue mapping, displaying 2-421
WRR bandwidth allocation, displaying 2-420
WRR weights, assigning to CoS priority queues 2-551
CoS-to-DSCP map
default 2-213
defining 2-213
cpe duplex command 2-69
CPE Ethernet ports, clearing 2-39
cpe protected command 2-71
cpe shutdown command 2-72
cpe type command 2-78
cross-stack UplinkFast, for STP 2-470
D
debug auto qos command C-2
debug dot1x command C-4
debug etherchannel command C-5
debug lre command C-6
debug pagp command C-7
debug pm command C-8
debug spanning-tree backbonefast command C-12
debug spanning-tree bpdu command C-13
debug spanning-tree bpdu-opt command C-14
debug spanning-tree command C-10
debug spanning-tree mstp command C-15
debug spanning-tree switch command C-17
debug spanning-tree uplinkfast command C-19
debug switch dhcp command C-20
debug sw-vlan command C-21
debug sw-vlan ifs command C-23
debug sw-vlan notification command C-24
debug sw-vlan vtp command C-26
debug udld command C-28
define interface-range command 2-79
delete LRE link history 2-43
delete LRE link monitor data 2-42
deny (access-list configuration) command 2-82
deny (MAC access-list configuration) command 2-85
DHCP, error recovery timer 2-112
DHCP snooping
accepting untrusted packets form edge switch 2-136
displaying
bindings 2-347
configuration 2-346
enabling
on a VLAN 2-140
trust on an interface 2-139
rate limiting 2-138
dir command B-6
dot1x auth-fail max-attempts 2-89
dot1x auth-fail vlan 2-90
dot1x command 2-87
dot1x default command 2-94
dot1x guest-vlan command 2-95
dot1x host-mode command 2-97
dot1x initialize command 2-98
dot1x max-req command 2-99
dot1x multiple-hosts command 2-100
dot1x port-control command 2-101
dot1x re-authenticate command 2-103
dot1x re-authentication command 2-104
dot1x reauthentication command 2-105
DSCP-to-CoS map
default 2-214
defining 2-213
DTP 2-490
DTP flap, error recovery timer 2-112
duplex command 2-108
dynamic-access ports, configuring 2-483
Dynamic Host Configuration Protocol (DHCP)
Dynamic Trunking Protocol
E
EAP-request/identity frame
maximum number to send 2-99
response time before retransmitting 2-106
environmental alarms, displaying A-14
environment variables, displaying 2-271
errdisable detect cause command 2-110
errdisable recovery command 2-112
EtherChannel
creating port-channel logical interface 2-123
debug messages, displayingC-5to C-7
displaying 2-323
LACP, modes 2-30
load-distribution methods 2-244
PAgP
aggregate-port learner 2-230
clearing channel-group information 2-45, 2-49
debug messages, displaying C-7
error recovery timer 2-112
learn method 2-230
modes 2-30
priority of interface for transmitted traffic 2-232
Ethernet controller, internal register display 2-281
Ethernet link statistics 2-39
Ethernet statistics, collecting 2-258
exit command 2-534
expedite queue, QoS 2-551
express setup-related commands 2-264, 2-395
extended discovery of candidate switches 2-58
extended-range VLANs
and allowed VLAN list 2-502
and pruning-eligible list 2-502
configuring 2-521
extended system ID for STP 2-441
F
facility alarm relays, displaying A-18
facility alarm status, displaying A-19
fan information, displaying 2-320
FCS bit error rate
displaying A-20
fluctuation threshold A-2
setting A-9
FCS hysteresis threshold A-2
fcs-threshold command A-9
file name, VTP 2-541
files, deleting 2-81
flash_init command B-8
flowcontrol command 2-114
flow-control packets
receiving 2-114
sending 2-114
format command B-9
frame check sequence
fsck command B-10
G
global configuration mode 1-2, 1-4
H
heartbeat messages
duration after which switch declared dead 2-60
interval between 2-67
help command B-11
holdtime for clusters 2-60
hop-count limit for clusters 2-58
host connection, port configuration 2-487
Hot Standby Router Protocol
HSRP
binding HSRP group to cluster 2-65
standby group 2-65
hw-module slot command 2-118
I
IDS, using with SPAN and RSPAN 2-221
IEEE 802.1x commands, authentication methods 2-3
IEEE 802.1x violation error recovery 2-112
IGMP filters, applying 2-141
IGMP groups
configuring throttling action 2-142
setting maximum 2-142
IGMP profiles
creating 2-144
displaying 2-349
IGMP snooping
adding ports statically 2-158
compatibility mode, displaying 2-350
configuration, displaying 2-350
displaying 2-353
enabling 2-146
enabling the configurable-leave timer 2-155
IGMP version, displaying 2-350
Immediate-Leave processing 2-154
MAC address tables 2-366
multicast groups, displaying 2-350
multicast router detection 2-147
multicast router ports, displaying 2-350
multicast routers 2-156
per VLAN 2-153
report suppression 2-149
source-only-learning 2-151
source-only-learning aging time 2-151
images
Immediate-Leave feature, MVR 2-225
Immediate-Leave processing 2-154
interface command 2-121
interface configuration mode 1-2, 1-4
interface port-channel command 2-123
interface range command 2-124
interface-range macros 2-79
interfaces
configuring 2-108
configuring multiple2-124to 2-125
creating port-channel logical 2-123
disabling 2-422
restarting 2-422
interleave command 2-126
internal registers, displaying 2-281
Intrusion Detection System
invalid GBIC
error detection for 2-110
error recovery timer 2-112
ip access-group command 2-128
ip access-list command 2-130
ip address command 2-132
ip addresses, setting 2-132
IP DHCP snooping
ip dhcp snooping command 2-133
ip dhcp snooping information option allow-untrusted command 2-136
ip dhcp snooping information option command 2-134
ip dhcp snooping limit rate command 2-138
ip dhcp snooping trust command 2-139
ip dhcp snooping vlan command 2-140
ip igmp filter command 2-141
ip igmp max-groups command 2-142
ip igmp profile command 2-144
ip igmp snooping command 2-146
ip igmp snooping configurable-leave timer command 2-155
ip igmp snooping mrouter learn pim v2 command 2-147
ip igmp snooping report-suppression command 2-149
ip igmp snooping source-only-learning age-timer 2-151
ip igmp snooping source-only-learning command 2-151
ip igmp snooping vlan command 2-153
ip igmp snooping vlan immediate-leave command 2-154
ip igmp snooping vlan mrouter command 2-156
ip igmp snooping vlan static command 2-158
IP multicast addresses 2-222
IP phones
auto-QoS configuration 2-17
trusting packets sent from 2-216
ip ssh command 2-159
IPv4 1-1
IPv6 1-1
IP version 4 1-1
IP version 6 1-1
J
jumbo frames
displaying setting 2-404
setting switch for 2-507
L
LACP
lacp port-priority command 2-161
lacp system-priority command 2-163
Layer 2 traceroute
IP addresses 2-512
MAC addresses 2-509
line configuration mode 1-3, 1-5
Link Aggregation Control Protocol
link flap
enable error detection for 2-110
enable timer to recover from error state 2-112
link statistics, clearing 2-39
load_helper command B-12
load-distribution methods for EtherChannel 2-244
local duplex command 2-170
local speed command 2-171
logging lre command 2-172
logical interface 2-123
loopback, error recovery timer 2-112
loop guard, for spanning tree 2-443, 2-446
LRE controller, defined 2-68
lre profile command 2-173
lre rate selection command 2-46
lre rate selection sequence command 2-175
lre sequence command 2-177
lre syslog command 2-179
lre upbo command 2-180
M
mac access-group command 2-184
MAC access-list configuration mode
deny 2-85
entering 2-186
permit 2-236
mac access-list extended command 2-186
MAC ACLs
deny 2-85
permit 2-236
MAC addresses
and port security 2-493
clearing notification global counters 2-47
displaying
aging time 2-363
dynamic 2-363
multicast entries 2-366
notification setting 2-368
number of addresses 2-363
per interface 2-363
per VLAN 2-363
secure 2-389
static 2-363
dynamic
aging time 2-188
deleting 2-47
displaying 2-363
enabling MAC address notification 2-190
secure
adding 2-493
displaying 2-389
static
adding 2-192
displaying 2-363
dropping on an interface 2-194
sticky
configuring manually 2-493
enabling sticky learning 2-493
learning dynamically 2-493
mac address-table aging-time command 2-188
mac address-table notification command 2-190
mac address-table static command 2-192
mac address-table static drop command 2-194
MAC-named extended ACLs 2-186
MAC notification feature
clearing global counters 2-47
configuring 2-190
enabling 2-190
macro description command 2-199
macro global command 2-200
macro global description command 2-202
macro name command 2-203
macros
adding a description 2-199
adding a global description 2-202
applying 2-200
creating 2-203
displaying 2-384
interface range 2-79
specifying parameter values 2-200
tracing 2-200
maps, QoS
defining 2-213
displaying 2-373
margin command 2-205
masks
match (class-map configuration) command 2-207
maximum transmission unit
media-type command 2-209
member switches
memory command B-13
mkdir command B-15
mls qos cos command 2-211
mls qos map command 2-213
mls qos trust command 2-216
mode, MVR 2-222
Mode button, and password recovery 2-259
monitor session command 2-219
more command B-16
MSTP
displaying 2-397
interoperability 2-53
link type 2-445
MST region
aborting changes 2-450
applying changes 2-450
configuration name 2-450
configuration revision number 2-450
current or pending display 2-450
displaying 2-397
MST configuration mode 2-450
VLANs-to-instance mapping 2-450
path cost 2-452
protocol mode 2-448
restart protocol migration process 2-53
root port
loop guard 2-443
preventing from becoming designated 2-443
restricting which can be root 2-443
root guard 2-443
root switch
affects of extended system ID 2-441
interval between BDPU messages 2-456
interval between hello BPDU messages 2-455, 2-462
max-age 2-456
maximum hop count before discarding BPDU 2-458
port priority for selection of 2-459
primary or secondary 2-462
switch priority 2-461
state changes
blocking to forwarding state 2-468
enabling BPDU filtering 2-433, 2-466
enabling BPDU guard 2-435, 2-466
enabling Port Fast 2-466, 2-468
forward-delay time 2-454
length of listening and learning states 2-454
rapid transition to forwarding 2-445
shutting down Port Fast-enabled ports 2-466
state information display 2-396
MTU
configuring size 2-507
displaying global setting 2-404
multicast groups
multicast groups, MVR 2-223
multicast router detection 2-147
multicast router learning method 2-156
multicast router ports, configuring 2-156
multicast suppression level
configuring 2-480
displaying 2-401
enabling 2-480
multicast VLAN, MVR 2-222
multicast VLAN registration
multiple hosts on authorized port 2-97
Multiple Spanning Tree Protocol
MVR
configuring 2-222
configuring interfaces 2-227
displaying 2-377
Immediate Leave feature 2-225
receiver port 2-227
source port 2-227
mvr command 2-222
mvr group command 2-223
mvr immediate command 2-225
mvr type command 2-227
mvr vlan group command 2-229
N
nonegotiate, speed 2-477
normal-range VLANs 2-521, 2-527
notifies command A-6
O
option 82, DHCP snooping 2-134
P
PAgP
pagp learn-method command 2-230
pagp port-priority command 2-232
password, VTP 2-541, 2-545, 2-547
password-recovery mechanism, enabling and disabling 2-259
permit (access-list configuration) command 2-233
permit (MAC access-list configuration) command 2-236
persistence command 2-238
per-VLAN spanning-tree plus
PID, displaying 2-343
PIM-DVMRP, as multicast router learning method 2-156
police command 2-239
policy-map command 2-241
policy maps
applying to an interface 2-261
creating 2-241
displaying 2-387
policers
displaying 2-371
for a single class 2-239
traffic classification
defining the class 2-35
defining the trust states 2-216
setting DSCP values 2-262
Port Aggregation Protocol
port-based authentication
802.1x AAA accounting methods 2-1
auth-fail VLAN 2-90
debug messages, display C-4
enabling 802.1x 2-101
guest VLAN 2-95
manual control of authorization state 2-101
multiple hosts on authorized port 2-97
periodic re-authentication
enabling 2-105
time between attempts 2-106
quiet period between failed authentication exchanges 2-106
re-authenticating 802.1x-enabled ports 2-103
resetting configurable 802.1x parameters 2-94
statistics and status display 2-316
switch-to-client frame-retransmission number 2-99
switch-to-client retransmission time 2-106
port-channel load-balance command 2-244
Port Fast, for spanning tree 2-468
port ranges, defining 2-79
ports, debug messages, display C-8
port security
aging 2-497
displaying 2-389
enabling 2-493
violation error recovery timer 2-112
port trust states for QoS 2-216
power supply alarms, setting A-3
power-supply dual command A-10
power-supply mode A-10
primary temperature alarm A-4
private configuration files 2-28
product identification information, displaying 2-343
profile (interface configuration) command 2-246
profile (sequence configuration) command 2-248
protected ports
displaying 2-336
enabling 2-501
pruning, VTP
displaying interface information 2-331
PVST+
Q
QoS
ACPs, displaying 2-369
automatic configuration 2-17
class maps
creating 2-37
defining the match criteria 2-207
displaying 2-273
configuration information, displaying 2-371
defining the CoS value for an incoming packet 2-211
displaying configuration information 2-268
maps
defining 2-213
displaying 2-373
policers, displaying 2-371
policy maps
applying to an interface 2-261
creating 2-241
defining policers 2-239
displaying policy maps 2-387
setting DSCP values 2-262
traffic classifications 2-35
port trust states 2-216
queues
CoS-to-egress-queue map 2-553
expedite 2-551
WRR weights 2-551
trusted boundary for Cisco SoftPhones 2-216
trusted boundary for IP phones 2-216
quality of service
querytime, MVR 2-222
R
rapid per-VLAN spanning-tree plus
rapid PVST+
rate selection, resetting 2-46
rate selection command 2-250
rate selection profile lock command 2-251
rate selection sequence command 2-252
rcommand command 2-254
re-authenticating 802.1x-enabled ports 2-103
re-authentication
periodic 2-105
time between attempts 2-106
receiver port, MVR 2-227
receiving flow-control packets 2-114
recovery mechanism
causes 2-112
displaying 2-321
timer interval 2-112
redundancy for cluster switches 2-65
relay-major command A-6
relay-minor command A-6
remote-span command 2-256
Remote Switched Port Analyzer
rename command B-17
reset interface 2-41
reset LRE rate selection setting 2-46
restricted VLAN
rmdir command B-19
rmon collection stats command 2-258
root guard, for spanning tree 2-443
RPS status display 2-391
RSPAN
and IDS 2-221
configuring 2-219
displaying 2-375
remote-span command 2-256
sessions
adding interfaces to 2-219
displaying 2-375
starting new 2-219
S
secondary temperature alarm A-4
sending flow-control packets 2-114
service password-recovery command 2-259
service-policy command 2-261
set command 2-262
set command, bootloader B-20
setup express command 2-264
SFP 2-209
SFP module preferred 2-209
show access-lists command 2-266
show alarm description port command A-11
show alarm profile command A-12
show alarm settings command A-14
show auto qos command 2-268
show boot command 2-271
show changes command 2-534
show class-map command 2-273
show cluster candidates command 2-277
show cluster command 2-275
show cluster members command 2-279
show controller lre cpe command 2-290
show controllers ethernet-controller command 2-281
show controllers lre actual command 2-293
show controllers lre admin command 2-296
show controllers lre link monitor command 2-298
show controllers lre log 2-43
show controllers lre log command 2-301
show controllers lre profile command 2-303
show controllers lre sequence command 2-306
show controllers lre status command 2-308
show controllers lre version command 2-313
show controller utilization command 2-314
show current command 2-534
show dot1x command 2-316
show env command 2-320
show env power command A-16
show env temperature command A-16
show errdisable recovery command 2-321
show etherchannel command 2-323
show facility-alarm relay command A-18
show facility-alarm status command A-19
show fcs threshold command A-20
show file command 2-326
show flowcontrol command 2-329
show interfaces command 2-331
show interfaces counters command 2-340
show inventory command 2-343
show ip access-list command 2-344
show ip dhcp snooping binding command 2-347
show ip dhcp snooping command 2-346
show ip igmp profile command 2-349
show ip igmp snooping command 2-350
show ip igmp snooping command querier detail 2-353
show ip igmp snooping querier detail command 2-353
show lacp command 2-355
show lre upgrade command 2-357
show mac access-group command 2-361
show mac address-table command 2-363
show mac address-table multicast command 2-366
show mac address-table notification command 2-368
show mls masks 2-369
show mls qos interface command 2-371
show mls qos maps command 2-373
show monitor command 2-375
show mvr command 2-377
show mvr interface command 2-378
show mvr members command 2-380
show pagp command 2-382
show parser macro command 2-384
show policy-map command 2-387
show port-security command 2-389
show proposed command 2-534
show rps command 2-391
show running-config vlan command 2-393
show setup express command 2-395
show spanning-tree command 2-396
show storm-control command 2-401
show system mtu command 2-404
show udld command 2-405
show version command 2-408
show vlan command 2-410
show vlan command fields 2-411
show vmps command 2-413
show vtp command 2-415
show wrr-queue bandwidth command 2-420
show wrr-queue cos-map command 2-421
shutdown command 2-422
shutdown vlan command 2-423
signal to noise ratio 2-205
Smartports macros
SNMP host, specifying 2-427
snmp-server enable traps command 2-424
snmp-server host command 2-427
snmp trap mac-notification command 2-431
SNMP traps
enabling MAC address notification 2-190
enabling MAC address notification traps 2-424, 2-431
enabling the sending of traps 2-424
SNR
definition 2-205
margins 2-205
software images
deleting 2-81
downloading 2-10
upgrading 2-10
uploading 2-15
software version, displaying 2-408
source ports, MVR 2-227
SPAN
and IDS 2-221
configuring 2-219
displaying 2-375
sessions
add interfaces to 2-219
displaying 2-375
start new 2-219
spanning-tree backbonefast command 2-432
spanning-tree bpdufilter command 2-433
spanning-tree bpduguard command 2-435
spanning-tree cost command 2-437
spanning-tree etherchannel command 2-439
spanning-tree extend system-id command 2-441
spanning-tree guard command 2-443
spanning-tree link-type command 2-445
spanning-tree loopguard default command 2-446
spanning-tree mode command 2-448
spanning-tree mst configuration command 2-450
spanning-tree mst cost command 2-452
spanning-tree mst forward-time command 2-454
spanning-tree mst hello-time command 2-455
spanning-tree mst max-age command 2-456
spanning-tree mst max-hops command 2-458
spanning-tree mst port-priority command 2-459
spanning-tree mst priority command 2-461
spanning-tree mst root command 2-462
spanning-tree portfast (global configuration) command 2-466
spanning-tree portfast (interface configuration) command 2-468
spanning-tree port-priority command 2-464
spanning-tree stack-port command 2-470
spanning-tree uplinkfast command 2-472
spanning-tree vlan command 2-474
speed command 2-477
SSH, configuring version 2-159
static-access ports, configuring 2-483
statistics, Ethernet group 2-258
sticky learning, enabling 2-493
storm control
broadcast, enabling 2-480
displaying 2-401
multicast, enabling 2-480
unicast, enabling 2-480
storm-control command 2-480
STP
BackboneFast 2-432
debug message display
BackboneFast events C-12
MSTP C-15
optimized BPDUs handling C-14
spanning-tree activity C-10
switch shim C-17
transmitted and received BPDUs C-13
UplinkFast C-19
detection of indirect link failures 2-432
EtherChannel misconfiguration 2-439
extended system ID 2-441
path cost 2-437
protocol mode 2-448
root port
accelerating choice of new 2-472
accelerating choice of new root in a stack 2-470
cross-stack UplinkFast 2-470
loop guard 2-443
preventing from becoming designated 2-443
restricting which can be root 2-443
root guard 2-443
UplinkFast 2-472
root switch
affects of extended system ID 2-441, 2-475
hello-time 2-474
interval between BDPU messages 2-474
interval between hello BPDU messages 2-474
max-age 2-474
port priority for selection of 2-464
primary or secondary 2-474
switch priority 2-474
state changes
blocking to forwarding state 2-468
enabling BPDU filtering 2-433, 2-466
enabling BPDU guard 2-435, 2-466
enabling Port Fast 2-466, 2-468
enabling timer to recover from error state 2-112
forward-delay time 2-474
length of listening and learning states 2-474
shutting down Port Fast-enabled ports 2-466
state information display 2-396
Switched Port Analyzer
switching characteristics
modifying 2-491
returning to interfaces 2-491
switchport access command 2-483
switchport block command 2-485
switchport host command 2-487
switchport mode command 2-489
switchport nonegotiate command 2-491
switchport port-security aging command 2-497
switchport port-security command 2-493
switchport priority extend command 2-499
switchport protected command 2-501
switchports, displaying 2-331
switchport trunk command 2-502
switchport voice vlan command 2-505
syslog command A-6
system mtu command 2-507
T
tar files, creating, listing, and extracting 2-12
Telnet, using with cluster switches 2-254
temperature alarms, setting A-4
test relay command A-21
traceroute, Layer 2
traceroute mac command 2-509
traceroute mac ip command 2-512
trunk ports, configuring 2-489
trunks
allowed VLANs 2-502
native VLANs 2-502
pruning-eligible VLAN list 2-504
pruning VLANs 2-502
VLAN 1 minimization 2-503
trunks, to non-DTP device 2-490
trusted boundary for QoS 2-216
type command B-23
U
UDLD
debug messages, displaying C-28
enabling globally 2-514
enabling per interface 2-516
error recovery timer 2-112
message timer 2-514
resetting shutdown interfaces 2-518
status 2-405
udld command 2-514
udld port command 2-516
udld reset command 2-518
unicast suppression level
configuring 2-480
displaying 2-401
enabling 2-480
UniDirectional Link Detection
unknown multicast traffic, preventing 2-485
unknown unicast traffic, preventing 2-485
unset (boot loader) command B-24
upgrade binary command 2-519
upgrade preserve command 2-520
upgrading software images 2-10
UplinkFast, for STP 2-472
upstream power back-off
configuring 2-180
supported values 2-181
V
version command B-26
VLAN
enabling guest VLAN supplicant 2-89
vlan (global configuration) command 2-521
vlan (VLAN configuration) command 2-527
VLAN configuration
VLAN configuration mode
commands
VLAN 2-527
VTP 2-547
entering 2-533
summary 1-3
vlan database command 2-533
VLAN Query Protocol
VLANs
adding 2-521
debug message display
ISL C-24
VLAN IOS file system error tests C-23
VLAN manager activity C-21
VTP C-26
displaying configurations 2-410
extended-range 2-521
MAC addresses
displaying 2-363
number of 2-363
saving the configuration 2-521
shutting down 2-423
SNMP traps for VTP 2-425, 2-428
trunks, VLAN 1 minimization 2-503
variables 2-527
VMPS
configuring servers 2-539
reconfirming dynamic VLAN assignments 2-537
vmps reconfirm (global configuration) command 2-536
vmps reconfirm (privileged EXEC) command 2-537
vmps retry command 2-538
vmps server command 2-539
voice VLAN
configuring 2-505
setting port priority 2-499
VQP
and dynamic-access ports 2-484
clearing client statistics 2-54
displaying information 2-413
per-server retry count 2-538
reconfirmation interval 2-536
reconfirming dynamic VLAN assignments 2-537
VTP
changing characteristics 2-541
clearing pruning counters 2-55
clearing VTP counters 2-55
configuring
file name 2-541
counters display fields 2-416
displaying information 2-415
enabling
saving the configuration 2-521, 2-531
status display fields 2-417
vtp (global configuration) command 2-541
vtp (privileged EXEC) command 2-545
vtp (VLAN configuration) command 2-547
W
WRR, assigning weights to egress queues 2-551
wrr-queue bandwidth command 2-551
wrr-queue cos-map command 2-553