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Catalyst 2950 and Catalyst 2955 Switch Command Reference, 12.1(22)EA7
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Catalyst 2950 and Catalyst 2955 Switch Command Reference (full book in PDF format)
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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 2-90
A
aaa accounting dot1x command 2-1
aaa authentication command 2-3
abort command 2-544
access control entries
access control lists
access control parameters
access groups
IP 2-129
MAC
applying ACL to interface 2-186
displaying 2-367
access-list (IP extended) command 2-5
access-list (IP standard) command 2-8
access-list configuration mode
deny 2-83
entering 2-131
permit 2-235
access ports 2-498
ACLs
IP
applying to interface 2-129
deny 2-83
permit 2-235
MAC
applying to interface 2-186
deny 2-86
displaying 2-270
permit 2-238
ACPs, displaying 2-376
aggregate-port learner 2-232
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 2-544
archive download-sw command 2-10
archive tar command 2-12
archive upload-sw command 2-15
audience xv
authorization state of controlled port 2-102
autonegotiation of duplex mode 2-109
auto qos voip command 2-17
B
BackboneFast, for STP 2-441
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 2-275
boot loader
accessing B-1
booting
Cisco IOS image B-2
helper image 2-25
directories
creating B-16
displaying a list of B-7
removing B-20
displaying
available commands B-12
memory heap utilization B-14
version B-27
environment variables
described B-21
displaying settings B-21
location of B-23
setting B-21
unsetting B-25
files
copying B-5
deleting B-6
displaying a list of B-7
displaying the contents of B-4, B-17, B-24
renaming B-18
file system
formatting B-10
initializing Flash B-9
running a consistency check B-11
loading helper images B-13
prompt B-1
resetting the system B-19
boot manual command 2-27
boot private-config-file command 2-28
boot system command 2-29
BPDU filtering, for spanning tree 2-442, 2-475
BPDU guard, for spanning tree 2-444, 2-475
broadcast suppression level
configuring 2-489
displaying 2-408
C
cat command B-4
caution, description xvi
channel-group command 2-30
channel-protocol command 2-33
Cisco SoftPhone
auto-QoS configuration 2-17
trusting packets sent from 2-218
class command 2-35
class-map command 2-37
class maps
creating 2-37
defining the match criteria 2-209
displaying 2-277
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 2-53
clear spanning-tree detected-protocols command 2-54
clear vmps statistics command 2-55
clear vtp counters command 2-56
cluster commander-address command 2-57
cluster discovery hop-count command 2-59
cluster enable command 2-60
cluster holdtime command 2-61
cluster management-vlan command 2-62
cluster member command 2-63
cluster run command 2-65
clusters
adding candidates 2-63
binding to HSRP 2-66
building manually 2-63
communicating with members by using Telnet 2-257
displaying
candidate switches 2-282
member switches 2-284
status 2-279
heartbeat messages
duration after which switch declared down 2-61
interval between 2-68
hop-count limit for extended discovery 2-59
HSRP standby groups 2-66
redundancy 2-66
SNMP trap 2-432
cluster standby-group command 2-66
cluster timer command 2-68
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 interfaces 2-125 to 2-126
config-vlan mode
description 1-4
entering 2-531
summary 1-2
controller longreachethernet command 2-69
conventions
command xv
for examples xvi
publication xv
text xv
copy command B-5
CoS
default value, assigning to incoming packets 2-213
incoming value, overriding 2-213
priority queue, assigning values to 2-563
priority queue mapping, displaying 2-429
WRR bandwidth allocation, displaying 2-428
WRR weights, assigning to CoS priority queues 2-561
CoS-to-DSCP map
default 2-215
defining 2-215
cpe duplex command 2-70
CPE Ethernet ports, clearing 2-39
cpe protected command 2-72
cpe shutdown command 2-73
cpe type command 2-79
cross-stack UplinkFast, for STP 2-479
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 2-80
delete LRE link history 2-43
delete LRE link monitor data 2-42
deny (access-list configuration) command 2-83
deny (MAC access-list configuration) command 2-86
DHCP, error recovery timer 2-113
DHCP snooping
accepting untrusted packets form edge switch 2-137
displaying
bindings 2-353
configuration 2-352
enabling
on a VLAN 2-141
trust on an interface 2-140
rate limiting 2-139
dir command B-7
documentation
related xvi
document conventions xv
dot1x auth-fail max-attempts 2-90
dot1x auth-fail vlan 2-91
dot1x command 2-88
dot1x default command 2-95
dot1x guest-vlan command 2-96
dot1x host-mode command 2-98
dot1x initialize command 2-99
dot1x max-req command 2-100
dot1x multiple-hosts command 2-101
dot1x port-control command 2-102
dot1x re-authenticate command 2-104
dot1x re-authentication command 2-105
dot1x reauthentication command 2-106
DSCP-to-CoS map
default 2-216
defining 2-215
DTP 2-499
DTP flap, error recovery timer 2-113
duplex command 2-109
dynamic-access ports, configuring 2-492
Dynamic Host Configuration Protocol (DHCP)
Dynamic Trunking Protocol
E
EAP-request/identity frame
maximum number to send 2-100
response time before retransmitting 2-107
environmental alarms, displaying A-14
environment variables, displaying 2-275
errdisable detect cause command 2-111
errdisable recovery command 2-113
EtherChannel
creating port-channel logical interface 2-124
debug messages, displaying C-5 to C-7
displaying 2-329
LACP, modes 2-30
load-distribution methods 2-246
PAgP
aggregate-port learner 2-232
clearing channel-group information 2-45, 2-49
debug messages, displaying C-7
error recovery timer 2-113
learn method 2-232
modes 2-30
priority of interface for transmitted traffic 2-234
Ethernet controller, internal register display 2-287
Ethernet link statistics 2-39
Ethernet statistics, collecting 2-261
examples, conventions for xvi
exit command 2-544
expedite queue, QoS 2-561
express setup-related commands 2-268, 2-402
extended discovery of candidate switches 2-59
extended-range VLANs
and allowed VLAN list 2-511
and pruning-eligible list 2-511
configuring 2-531
extended system ID for STP 2-450
F
facility alarm relays, displaying A-18
facility alarm status, displaying A-19
fan information, displaying 2-326
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 2-551
files, deleting 2-82
flash_init command B-9
flowcontrol command 2-115
flow-control packets
receiving 2-115
sending 2-115
format command B-10
frame check sequence
fsck command B-11
G
global configuration mode 1-2, 1-4
H
heartbeat messages
duration after which switch declared dead 2-61
interval between 2-68
help command B-12
holdtime for clusters 2-61
hop-count limit for clusters 2-59
host connection, port configuration 2-496
Hot Standby Router Protocol
HSRP
binding HSRP group to cluster 2-66
standby group 2-66
hw-module slot command 2-119
I
IDS, using with SPAN and RSPAN 2-223
IEEE 802.1x commands, authentication methods 2-3
IEEE 802.1x violation error recovery 2-113
IGMP filters, applying 2-142
IGMP groups
configuring throttling action 2-143
setting maximum 2-143
IGMP profiles
creating 2-145
displaying 2-355
IGMP snooping
adding ports statically 2-159
compatibility mode, displaying 2-356
configuration, displaying 2-356
displaying 2-359
enabling 2-147
enabling the configurable-leave timer 2-156
IGMP version, displaying 2-356
Immediate-Leave processing 2-155
MAC address tables 2-373
multicast groups, displaying 2-356
multicast router detection 2-148
multicast router ports, displaying 2-356
multicast routers 2-157
per VLAN 2-154
report suppression 2-150
source-only-learning 2-152
source-only-learning aging time 2-152
images
Immediate-Leave feature, MVR 2-227
Immediate-Leave processing 2-155
interface command 2-122
interface configuration mode 1-2, 1-4
interface port-channel command 2-124
interface range command 2-125
interface-range macros 2-80
interfaces
configuring 2-109
configuring multiple 2-125 to 2-126
creating port-channel logical 2-124
disabling 2-430
restarting 2-430
interleave command 2-127
internal registers, displaying 2-287
Intrusion Detection System
invalid GBIC
error detection for 2-111
error recovery timer 2-113
ip access-group command 2-129
ip access-list command 2-131
ip address command 2-133
ip addresses, setting 2-133
IP DHCP snooping
ip dhcp snooping command 2-134
ip dhcp snooping information option allow-untrusted command 2-137
ip dhcp snooping information option command 2-135
ip dhcp snooping limit rate command 2-139
ip dhcp snooping trust command 2-140
ip dhcp snooping vlan command 2-141
ip igmp filter command 2-142
ip igmp max-groups command 2-143
ip igmp profile command 2-145
ip igmp snooping command 2-147
ip igmp snooping configurable-leave timer command 2-156
ip igmp snooping mrouter learn pim v2 command 2-148
ip igmp snooping report-suppression command 2-150
ip igmp snooping source-only-learning age-timer 2-152
ip igmp snooping source-only-learning command 2-152
ip igmp snooping vlan command 2-154
ip igmp snooping vlan immediate-leave command 2-155
ip igmp snooping vlan mrouter command 2-157
ip igmp snooping vlan static command 2-159
IP multicast addresses 2-224
IP phones
auto-QoS configuration 2-17
trusting packets sent from 2-218
ip ssh command 2-161
IPv4 1-1
IPv6 1-1
IP version 4 1-1
IP version 6 1-1
J
jumbo frames
displaying setting 2-411
setting switch for 2-516
L
LACP
lacp port-priority command 2-163
lacp system-priority command 2-165
Layer 2 traceroute
IP addresses 2-522
MAC addresses 2-519
line configuration mode 1-3, 1-5
Link Aggregation Control Protocol
link flap
enable error detection for 2-111
enable timer to recover from error state 2-113
link statistics, clearing 2-39
load_helper command B-13
load-distribution methods for EtherChannel 2-246
local duplex command 2-172
local speed command 2-173
logging lre command 2-174
logical interface 2-124
loopback, error recovery timer 2-113
loop guard, for spanning tree 2-452, 2-455
LRE controller, defined 2-69
lre profile command 2-175
lre rate selection command 2-46
lre rate selection sequence command 2-177
lre sequence command 2-179
lre syslog command 2-181
lre upbo command 2-182
M
mac access-group command 2-186
MAC access-list configuration mode
deny 2-86
entering 2-188
permit 2-238
mac access-list extended command 2-188
MAC ACLs
deny 2-86
permit 2-238
MAC addresses
and port security 2-502
clearing notification global counters 2-47
displaying
aging time 2-370
dynamic 2-370
multicast entries 2-373
notification setting 2-375
number of addresses 2-370
per interface 2-370
per VLAN 2-370
secure 2-396
static 2-370
dynamic
aging time 2-190
deleting 2-47
displaying 2-370
enabling MAC address notification 2-192
secure
adding 2-502
displaying 2-396
static
adding 2-194
displaying 2-370
dropping on an interface 2-196
sticky
configuring manually 2-502
enabling sticky learning 2-502
learning dynamically 2-502
mac address-table aging-time command 2-190
mac address-table notification command 2-192
mac address-table static command 2-194
mac address-table static drop command 2-196
MAC-named extended ACLs 2-188
MAC notification feature
clearing global counters 2-47
configuring 2-192
enabling 2-192
macro description command 2-201
macro global command 2-202
macro global description command 2-204
macro name command 2-205
macros
adding a description 2-201
adding a global description 2-204
applying 2-202
creating 2-205
displaying 2-391
interface range 2-80
specifying parameter values 2-202
tracing 2-202
manual
purpose of xv
manual, audience xv
maps, QoS
defining 2-215
displaying 2-380
margin command 2-207
masks
match (class-map configuration) command 2-209
maximum transmission unit
media-type command 2-211
member switches
memory command B-14
mkdir command B-16
mls qos cos command 2-213
mls qos map command 2-215
mls qos trust command 2-218
mode, MVR 2-224
Mode button, and password recovery 2-263
monitor session command 2-221
more command B-17
MSTP
displaying 2-404
interoperability 2-54
link type 2-454
MST region
aborting changes 2-459
applying changes 2-459
configuration name 2-459
configuration revision number 2-459
current or pending display 2-459
displaying 2-404
MST configuration mode 2-459
VLANs-to-instance mapping 2-459
path cost 2-461
protocol mode 2-457
restart protocol migration process 2-54
root port
loop guard 2-452
preventing from becoming designated 2-452
restricting which can be root 2-452
root guard 2-452
root switch
affects of extended system ID 2-450
interval between BDPU messages 2-465
interval between hello BPDU messages 2-464, 2-471
max-age 2-465
maximum hop count before discarding BPDU 2-467
port priority for selection of 2-468
primary or secondary 2-471
switch priority 2-470
state changes
blocking to forwarding state 2-477
enabling BPDU filtering 2-442, 2-475
enabling BPDU guard 2-444, 2-475
enabling Port Fast 2-475, 2-477
forward-delay time 2-463
length of listening and learning states 2-463
rapid transition to forwarding 2-454
shutting down Port Fast-enabled ports 2-475
state information display 2-403
MTU
configuring size 2-516
displaying global setting 2-411
multicast groups
multicast groups, MVR 2-225
multicast router detection 2-148
multicast router learning method 2-157
multicast router ports, configuring 2-157
multicast suppression level
configuring 2-489
displaying 2-408
enabling 2-489
multicast VLAN, MVR 2-224
multicast VLAN registration
multiple hosts on authorized port 2-98
Multiple Spanning Tree Protocol
MVR
configuring 2-224
configuring interfaces 2-228
displaying 2-384
Immediate Leave feature 2-227
receiver port 2-228
source port 2-228
mvr command 2-224
mvr group command 2-225
mvr immediate command 2-227
mvr type command 2-228
mvr vlan group command 2-230
N
nonegotiate, speed 2-486
normal-range VLANs 2-531, 2-537
note, description xvi
notifies command A-6
O
option 82, DHCP snooping 2-135
P
PAgP
pagp learn-method command 2-232
pagp port-priority command 2-234
password, VTP 2-551, 2-555, 2-557
password-recovery mechanism, enabling and disabling 2-263
permit (access-list configuration) command 2-235
permit (MAC access-list configuration) command 2-238
persistence command 2-240
per-VLAN spanning-tree plus
PID, displaying 2-349
PIM-DVMRP, as multicast router learning method 2-157
police command 2-241
policy-map command 2-243
policy maps
applying to an interface 2-265
creating 2-243
displaying 2-394
policers
displaying 2-378
for a single class 2-241
traffic classification
defining the class 2-35
defining the trust states 2-218
setting DSCP values 2-266
Port Aggregation Protocol
port-based authentication
802.1x AAA accounting methods 2-1
auth-fail VLAN 2-91
debug messages, display C-4
enabling 802.1x 2-102
guest VLAN 2-96
manual control of authorization state 2-102
multiple hosts on authorized port 2-98
periodic re-authentication
enabling 2-106
time between attempts 2-107
quiet period between failed authentication exchanges 2-107
re-authenticating 802.1x-enabled ports 2-104
resetting configurable 802.1x parameters 2-95
statistics and status display 2-322
switch-to-client frame-retransmission number 2-100
switch-to-client retransmission time 2-107
port-channel load-balance command 2-246
Port Fast, for spanning tree 2-477
port ranges, defining 2-80
ports, debug messages, display C-8
port security
aging 2-506
displaying 2-396
enabling 2-502
violation error recovery timer 2-113
port trust states for QoS 2-218
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
privileged EXEC mode 1-2 to 1-3
product identification information, displaying 2-349
profile (interface configuration) command 2-248
profile (sequence configuration) command 2-250
protected ports
displaying 2-342
enabling 2-510
pruning, VTP
displaying interface information 2-337
publications, related xvi
PVST+
Q
QoS
ACPs, displaying 2-376
automatic configuration 2-17
class maps
creating 2-37
defining the match criteria 2-209
displaying 2-277
configuration information, displaying 2-378
defining the CoS value for an incoming packet 2-213
displaying configuration information 2-272
maps
defining 2-215
displaying 2-380
policers, displaying 2-378
policy maps
applying to an interface 2-265
creating 2-243
defining policers 2-241
displaying policy maps 2-394
setting DSCP values 2-266
traffic classifications 2-35
port trust states 2-218
queues
CoS-to-egress-queue map 2-563
expedite 2-561
WRR weights 2-561
trusted boundary for Cisco SoftPhones 2-218
trusted boundary for IP phones 2-218
quality of service
querytime, MVR 2-224
R
rapid per-VLAN spanning-tree plus
rapid PVST+
rate selection, resetting 2-46
rate selection command 2-252
rate selection profile lock command 2-253
rate selection sequence command 2-255
rcommand command 2-257
re-authenticating 802.1x-enabled ports 2-104
re-authentication
periodic 2-106
time between attempts 2-107
receiver port, MVR 2-228
receiving flow-control packets 2-115
recovery mechanism
causes 2-113
displaying 2-327
timer interval 2-113
redundancy for cluster switches 2-66
relay-major command A-6
relay-minor command A-6
remote-span command 2-259
Remote Switched Port Analyzer
rename command B-18
reset interface 2-41
reset LRE rate selection setting 2-46
restricted VLAN
rmdir command B-20
rmon collection stats command 2-261
root guard, for spanning tree 2-452
RPS status display 2-398
RSPAN
and IDS 2-223
configuring 2-221
displaying 2-382
remote-span command 2-259
sessions
adding interfaces to 2-221
displaying 2-382
starting new 2-221
S
secondary temperature alarm A-4
sending flow-control packets 2-115
service password-recovery command 2-263
service-policy command 2-265
set command 2-266
set command, bootloader B-21
setup express command 2-268
SFP 2-211
SFP module preferred 2-211
show access-lists command 2-270
show alarm description port command A-11
show alarm profile command A-12
show alarm settings command A-14
show auto qos command 2-272
show boot command 2-275
show changes command 2-544
show class-map command 2-277
show cluster candidates command 2-282
show cluster command 2-279
show cluster members command 2-284
show controller lre cpe command 2-296
show controllers ethernet-controller command 2-287
show controllers lre actual command 2-299
show controllers lre admin command 2-302
show controllers lre link monitor command 2-304
show controllers lre log 2-43
show controllers lre log command 2-307
show controllers lre profile command 2-309
show controllers lre sequence command 2-312
show controllers lre status command 2-314
show controllers lre version command 2-319
show controller utilization command 2-320
show current command 2-544
show dot1x command 2-322
show env command 2-326
show env power command A-16
show env temperature command A-16
show errdisable recovery command 2-327
show etherchannel command 2-329
show facility-alarm relay command A-18
show facility-alarm status command A-19
show fcs threshold command A-20
show file command 2-332
show flowcontrol command 2-335
show interfaces command 2-337
show interfaces counters command 2-346
show inventory command 2-349
show ip access-list command 2-350
show ip dhcp snooping binding command 2-353
show ip dhcp snooping command 2-352
show ip igmp profile command 2-355
show ip igmp snooping command 2-356
show ip igmp snooping command querier detail 2-359
show ip igmp snooping querier detail command 2-359
show lacp command 2-361
show lre upgrade command 2-363
show mac access-group command 2-367
show mac address-table command 2-370
show mac address-table multicast command 2-373
show mac address-table notification command 2-375
show mls masks 2-376
show mls qos interface command 2-378
show mls qos maps command 2-380
show monitor command 2-382
show mvr command 2-384
show mvr interface command 2-385
show mvr members command 2-387
show pagp command 2-389
show parser macro command 2-391
show policy-map command 2-394
show port-security command 2-396
show proposed command 2-544
show rps command 2-398
show running-config vlan command 2-400
show setup express command 2-402
show spanning-tree command 2-403
show storm-control command 2-408
show system mtu command 2-411
show udld command 2-412
show version command 2-415
show vlan command 2-417
show vlan command fields 2-418
show vmps command 2-420
show vtp command 2-423
show wrr-queue bandwidth command 2-428
show wrr-queue cos-map command 2-429
shutdown command 2-430
shutdown vlan command 2-431
signal to noise ratio 2-207
Smartports macros
SNMP host, specifying 2-436
snmp-server enable traps command 2-432
snmp-server host command 2-436
snmp trap mac-notification command 2-440
SNMP traps
enabling MAC address notification 2-192
enabling MAC address notification traps 2-432, 2-440
enabling the sending of traps 2-432
SNR
definition 2-207
margins 2-207
software images
deleting 2-82
downloading 2-10
upgrading 2-10
uploading 2-15
software version, displaying 2-415
source ports, MVR 2-228
SPAN
and IDS 2-223
configuring 2-221
displaying 2-382
sessions
add interfaces to 2-221
displaying 2-382
start new 2-221
spanning-tree backbonefast command 2-441
spanning-tree bpdufilter command 2-442
spanning-tree bpduguard command 2-444
spanning-tree cost command 2-446
spanning-tree etherchannel command 2-448
spanning-tree extend system-id command 2-450
spanning-tree guard command 2-452
spanning-tree link-type command 2-454
spanning-tree loopguard default command 2-455
spanning-tree mode command 2-457
spanning-tree mst configuration command 2-459
spanning-tree mst cost command 2-461
spanning-tree mst forward-time command 2-463
spanning-tree mst hello-time command 2-464
spanning-tree mst max-age command 2-465
spanning-tree mst max-hops command 2-467
spanning-tree mst port-priority command 2-468
spanning-tree mst priority command 2-470
spanning-tree mst root command 2-471
spanning-tree portfast (global configuration) command 2-475
spanning-tree portfast (interface configuration) command 2-477
spanning-tree port-priority command 2-473
spanning-tree stack-port command 2-479
spanning-tree uplinkfast command 2-481
spanning-tree vlan command 2-483
speed command 2-486
SSH, configuring version 2-161
static-access ports, configuring 2-492
statistics, Ethernet group 2-261
sticky learning, enabling 2-502
storm control
broadcast, enabling 2-489
displaying 2-408
multicast, enabling 2-489
unicast, enabling 2-489
storm-control command 2-489
STP
BackboneFast 2-441
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 2-441
EtherChannel misconfiguration 2-448
extended system ID 2-450
path cost 2-446
protocol mode 2-457
root port
accelerating choice of new 2-481
accelerating choice of new root in a stack 2-479
cross-stack UplinkFast 2-479
loop guard 2-452
preventing from becoming designated 2-452
restricting which can be root 2-452
root guard 2-452
UplinkFast 2-481
root switch
affects of extended system ID 2-450, 2-484
hello-time 2-483
interval between BDPU messages 2-483
interval between hello BPDU messages 2-483
max-age 2-483
port priority for selection of 2-473
primary or secondary 2-483
switch priority 2-483
state changes
blocking to forwarding state 2-477
enabling BPDU filtering 2-442, 2-475
enabling BPDU guard 2-444, 2-475
enabling Port Fast 2-475, 2-477
enabling timer to recover from error state 2-113
forward-delay time 2-483
length of listening and learning states 2-483
shutting down Port Fast-enabled ports 2-475
state information display 2-403
Switched Port Analyzer
switching characteristics
modifying 2-500
returning to interfaces 2-500
switchport access command 2-492
switchport block command 2-494
switchport host command 2-496
switchport mode command 2-498
switchport nonegotiate command 2-500
switchport port-security aging command 2-506
switchport port-security command 2-502
switchport priority extend command 2-508
switchport protected command 2-510
switchports, displaying 2-337
switchport trunk command 2-511
switchport voice vlan command 2-514
syslog command A-6
system mtu command 2-516
T
tar files, creating, listing, and extracting 2-12
Telnet, using with cluster switches 2-257
temperature alarms, setting A-4
test relay command A-21
traceroute, Layer 2
traceroute mac command 2-519
traceroute mac ip command 2-522
trunk ports, configuring 2-498
trunks
allowed VLANs 2-511
native VLANs 2-511
pruning-eligible VLAN list 2-513
pruning VLANs 2-511
VLAN 1 minimization 2-512
trunks, to non-DTP device 2-499
trusted boundary for QoS 2-218
type command B-24
U
UDLD
debug messages, displaying C-28
enabling globally 2-524
enabling per interface 2-526
error recovery timer 2-113
message timer 2-524
resetting shutdown interfaces 2-528
status 2-412
udld command 2-524
udld port command 2-526
udld reset command 2-528
unicast suppression level
configuring 2-489
displaying 2-408
enabling 2-489
UniDirectional Link Detection
unknown multicast traffic, preventing 2-494
unknown unicast traffic, preventing 2-494
unset (boot loader) command B-25
upgrade binary command 2-529
upgrade preserve command 2-530
upgrading software images 2-10
UplinkFast, for STP 2-481
upstream power back-off
configuring 2-182
supported values 2-183
V
version command B-27
VLAN
enabling guest VLAN supplicant 2-90
vlan (global configuration) command 2-531
vlan (VLAN configuration) command 2-537
VLAN configuration
VLAN configuration mode
commands
VLAN 2-537
VTP 2-557
entering 2-543
summary 1-3
vlan database command 2-543
VLAN Query Protocol
VLANs
adding 2-531
debug message display
ISL C-24
VLAN IOS file system error tests C-23
VLAN manager activity C-21
VTP C-26
displaying configurations 2-417
extended-range 2-531
MAC addresses
displaying 2-370
number of 2-370
saving the configuration 2-531
shutting down 2-431
SNMP traps for VTP 2-433, 2-437
trunks, VLAN 1 minimization 2-512
variables 2-537
VMPS
configuring servers 2-549
reconfirming dynamic VLAN assignments 2-547
vmps reconfirm (global configuration) command 2-546
vmps reconfirm (privileged EXEC) command 2-547
vmps retry command 2-548
vmps server command 2-549
voice VLAN
configuring 2-514
setting port priority 2-508
VQP
and dynamic-access ports 2-493
clearing client statistics 2-55
displaying information 2-420
per-server retry count 2-548
reconfirmation interval 2-546
reconfirming dynamic VLAN assignments 2-547
VTP
changing characteristics 2-551
clearing pruning counters 2-56
clearing VTP counters 2-56
configuring
file name 2-551
counters display fields 2-424
displaying information 2-423
enabling
saving the configuration 2-531, 2-541
status display fields 2-425
vtp (global configuration) command 2-551
vtp (privileged EXEC) command 2-555
vtp (VLAN configuration) command 2-557
W
WRR, assigning weights to egress queues 2-561
wrr-queue bandwidth command 2-561
wrr-queue cos-map command 2-563