Cisco Catalyst 3550 Installation manual

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Catalyst 3550 Multilayer Switch
Command Reference
Cisco IOS Release 12.1(19)EA1
October 2003
Customer Order Number: DOC-7811195=
Text Part Number: 78-11195-09

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Catalyst 3550 Multilayer Switch Command Reference
Copyright © 2001–2003 Cisco Systems, Inc. All rights reserved.

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CONTENTS
Preface xv
Audience xv
Purpose xv
Conventions xvi
Related Publications xvii
Obtaining Documentation xvii
Cisco.com xvii
Documentation CD-ROM xviii
Ordering Documentation xviii
Documentation Feedback xviii
Obtaining Technical Assistance xviii
Cisco TAC Website xix
Opening a TAC Case xix
TAC CasePriority Definitions xix
Obtaining AdditionalPublications and Information xx
CHAPTER 1Using the Command-Line Interface 1-1
Type of Memory 1-1
Platforms 1-1
CLI Command Modes 1-1
User EXEC Mode 1-3
Privileged EXEC Mode 1-3
Global Configuration Mode 1-3
Interface Configuration Mode 1-4
config-vlan Mode 1-4
VLAN Configuration Mode 1-5
Line Configuration Mode 1-5
CHAPTER 2Cisco IOS Commands 2-1
aaa authentication dot1x 2-1
access-list hardware program nonblocking 2-3
action 2-5
archive download-sw 2-7

Contents
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archive tar 2-9
archive upload-sw 2-12
auto qos voip 2-14
boot boothlpr 2-18
boot buffersize 2-19
boot config-file 2-20
boot enable-break 2-21
boot helper 2-22
boot helper-config-file 2-23
boot manual 2-24
boot private-config-file 2-25
boot system 2-26
channel-group 2-27
channel-protocol 2-30
class 2-32
class-map 2-34
clear lacp 2-36
clear l2protocol-tunnel counters 2-37
clear mac address-table 2-38
clear pagp 2-40
clear port-security 2-41
clear setup express 2-43
clear spanning-tree counters 2-44
clear spanning-tree detected-protocols 2-45
clear vmps statistics 2-46
clear vtp counters 2-47
cluster commander-address 2-48
cluster discovery hop-count 2-50
cluster enable 2-51
cluster holdtime 2-53
cluster member 2-54
cluster outside-interface 2-56
cluster run 2-57
cluster standby-group 2-58
cluster timer 2-60

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define interface-range 2-61
delete 2-63
deny 2-64
dot1x default 2-67
dot1x guest-vlan 2-68
dot1x host-mode 2-69
dot1x initialize 2-71
dot1x max-req 2-72
dot1x multiple-hosts 2-73
dot1x port-control 2-74
dot1x re-authenticate 2-76
dot1x re-authentication 2-77
dot1x reauthentication 2-78
dot1x system-auth-control 2-80
dot1x timeout 2-81
duplex 2-83
errdisable detect cause 2-85
errdisable recovery 2-87
flowcontrol 2-89
interface port-channel 2-92
interface range 2-94
interface vlan 2-96
ip access-group 2-98
ip address 2-100
ip dhcp snooping 2-102
ip dhcp snooping information option 2-104
ip dhcp snooping information option format snmp-ifindex 2-106
ip dhcp snooping limit rate 2-107
ip dhcp snooping trust 2-108
ip dhcp snooping vlan 2-109
ip igmp filter 2-110
ip igmp max-groups 2-112
ip igmp profile 2-114
ip igmp snooping 2-116
ip igmp snooping report-suppression 2-119

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ip igmp snooping source-only-learning age-timer 2-121
ip ssh 2-123
ip vrf (global configuration) 2-125
ip vrf (interface configuration) 2-127
l2protocol-tunnel 2-129
l2protocol-tunnelcos 2-132
lacp port-priority 2-133
lacp system-priority 2-134
logging file 2-135
mac access-group 2-137
mac access-list extended 2-139
mac address-table aging-time 2-141
mac address-table notification 2-143
mac address-table static 2-145
mac address-table static drop 2-146
macro apply 2-148
macro description 2-150
macro name 2-151
match (access-map configuration) 2-153
match (class-map configuration) 2-155
mls aclmerge delay 2-158
mls qos 2-160
mls qos aggregate-policer 2-163
mls qos cos 2-165
mls qos cos policy-map 2-167
mls qos dscp-mutation 2-169
mls qos map 2-171
mls qos min-reserve 2-174
mls qos monitor 2-175
mls qos trust 2-177
monitor session 2-179
mvr (global configuration) 2-183
mvr (interface configuration) 2-186
pagp learn-method 2-189
pagp port-priority 2-191

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permit 2-193
police 2-196
police aggregate 2-198
policy-map 2-200
port-channel load-balance 2-203
power inline 2-204
priority-queue 2-206
rcommand 2-207
remote-span 2-209
rmon collection stats 2-210
sdm prefer 2-211
service password-recovery 2-214
service-policy 2-217
set 2-219
setup 2-221
setup express 2-225
show access-lists 2-227
show auto qos 2-229
show boot 2-231
show class-map 2-233
show cluster 2-234
show cluster candidates 2-236
show cluster members 2-238
show controllers cpu-interface 2-241
show controllers ethernet-controller 2-243
show controllers switch 2-248
show controllers tcam 2-249
show dot1q-tunnel 2-251
show dot1x 2-252
show env 2-255
show errdisable detect 2-257
show errdisable flap-values 2-258
show errdisable recovery 2-260
show etherchannel 2-262
show fm 2-265

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show fm interface 2-268
show fm vlan 2-270
show forward 2-271
show interfaces 2-276
show interfaces counters 2-284
show ip dhcp snooping 2-287
show ip dhcp snoopingbinding 2-288
show ip igmp profile 2-290
show ip igmp snooping 2-291
show l2protocol-tunnel 2-294
show l2tcam 2-297
show l3tcam 2-299
show lacp 2-301
show mac access-group 2-303
show mac address-table 2-305
show mac address-table address 2-307
show mac address-table aging-time 2-309
show mac address-table count 2-311
show mac address-table dynamic 2-313
show mac address-table interface 2-315
show mac address-table multicast 2-317
show mac address-table notification 2-319
show mac address-table static 2-321
show mac address-table vlan 2-323
show mls qos 2-325
show mls qos aggregate-policer 2-326
show mls qos interface 2-327
show mls qos maps 2-331
show monitor 2-334
show mvr 2-336
show mvr interface 2-338
show mvr members 2-340
show pagp 2-342
show parser macro 2-344
show policy-map 2-346

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show port-security 2-348
show power inline 2-351
show running-config vlan 2-353
show sdm prefer 2-355
show setup express 2-357
show spanning-tree 2-358
show storm-control 2-364
show system mtu 2-366
show tcam 2-367
show tcam pbr 2-370
show tcam qos 2-373
show udld 2-375
show version 2-378
show vlan 2-380
show vlan access-map 2-384
show vlan filter 2-385
show vmps 2-386
show vtp 2-388
shutdown 2-392
shutdown vlan 2-393
snmp-server enable traps 2-394
snmp-server host 2-397
snmp-server ip 2-401
snmp trap mac-notification 2-403
spanning-tree backbonefast 2-405
spanning-tree bpdufilter 2-406
spanning-tree bpduguard 2-408
spanning-tree cost 2-410
spanning-tree etherchannel guard misconfig 2-412
spanning-tree extend system-id 2-414
spanning-tree guard 2-416
spanning-tree link-type 2-418
spanning-tree loopguard default 2-419
spanning-tree mode 2-421
spanning-tree mst configuration 2-423

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spanning-tree mst cost 2-425
spanning-tree mst forward-time 2-427
spanning-tree mst hello-time 2-428
spanning-tree mst max-age 2-429
spanning-tree mst max-hops 2-430
spanning-tree mst port-priority 2-431
spanning-tree mst priority 2-433
spanning-tree mst root 2-434
spanning-tree port-priority 2-436
spanning-tree portfast (global configuration) 2-438
spanning-tree portfast (interface configuration) 2-440
spanning-tree stack-port 2-442
spanning-tree uplinkfast 2-444
spanning-tree vlan 2-446
speed 2-449
storm-control 2-451
switchcore 2-453
switchport 2-455
switchport access 2-457
switchport block 2-459
switchport broadcast 2-460
switchport mode 2-461
switchport multicast 2-464
switchport nonegotiate 2-465
switchport port-security 2-467
switchport port-security aging 2-471
switchport priority extend 2-473
switchport protected 2-475
switchport trunk 2-476
switchport unicast 2-480
switchport voice vlan 2-481
system mtu 2-483
traceroute mac 2-485
traceroute macip 2-488
trust 2-490

Contents
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udld 2-492
udld port 2-494
udld reset 2-496
vlan (global configuration) 2-497
vlan (VLAN configuration) 2-503
vlan access-map 2-509
vlan database 2-511
vlan dot1q tag native 2-515
vlan filter 2-516
vmps reconfirm (privileged EXEC) 2-518
vmps reconfirm (global configuration) 2-519
vmps retry 2-520
vmps server 2-521
vtp (global configuration) 2-523
vtp (privileged EXEC) 2-527
vtp (VLAN configuration) 2-529
wrr-queue bandwidth 2-533
wrr-queue cos-map 2-535
wrr-queue dscp-map 2-537
wrr-queue min-reserve 2-539
wrr-queue queue-limit 2-540
wrr-queue random-detect max-threshold 2-541
wrr-queue threshold 2-543
APPENDIX ABoot Loader Commands A-1
boot A-2
cat A-3
copy A-4
delete A-5
dir A-6
flash_init A-8
format A-9
fsck A-10
help A-11
load_helper A-12
memory A-13

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mkdir A-15
more A-16
rename A-17
reset A-18
rmdir A-19
set A-20
type A-23
unset A-24
version A-26
APPENDIX BDebug Commands B-1
debug acltcam B-2
debug autoqos B-3
debug cluster B-5
debug cpu-interface B-7
debug dot1x B-8
debug etherchannel B-9
debug ethernet-controller ram-access B-10
debug fallback-bridging B-11
debug gigastack B-12
debug ilpower controller B-13
debug ilpower event B-14
debug ip dhcp snooping B-15
debug ip igmp filter B-16
debug ip igmp max-groups B-17
debug l3multicast B-18
debug l3tcam B-19
debug l3unicast B-20
debug mac-manager B-21
debug mac-notification B-22
debug met B-23
debug mvrdbg B-24
debug pagp B-25
debug pbr B-26
debug pm B-27
debug port-security B-29

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debug span-session B-30
debug spanning-tree B-31
debug spanning-tree backbonefast B-33
debug spanning-tree bpdu B-34
debug spanning-tree bpdu-opt B-35
debug spanning-tree mstp B-36
debug spanning-tree switch B-38
debug spanning-tree uplinkfast B-40
debug sw-vlan B-41
debug sw-vlan ifs B-43
debug sw-vlan notification B-44
debug sw-vlan vtp B-45
debug udld B-47
I NDEX

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Preface
Audience
This guide is for the networking professional using the Cisco IOS command-line interface (CLI) to
manage the Catalyst 3550 switch, hereafter referred to as the switch or the multilayer switch. Before
using this guide, you should have experience working with the Cisco IOS and the switch software
features. Before using this guide, you should have experience working with the Cisco IOS and be
familiar with the concepts and terminology of Ethernet and local area networking.
Purpose
The Catalyst 3550 switch is supported by either the standard multilayer software image (SMI) or the
enhanced multilayer software image (EMI). The EMI provides a richer set of enterprise-class features,
including hardware-based IP unicast and multicast routing, inter-VLAN routing, routed access control
lists (ACLs), and the Hot Standby Router Protocol (HSRP). All Catalyst 3550 Gigabit Ethernet switches
are shipped with the EMI pre-installed. Catalyst 3550 Fast Ethernet switches are shipped with either the
SMI or the EMI pre-installed. After initial deployment, you can order the EnhancedMultilayer Software
Image Upgrade kit to upgrade Catalyst 3550 Fast Ethernet switches from the SMI to the EMI.
This guide provides the information you need about the Layer 2 and Layer 3 commands that have been
created or changed for use with the Catalyst 3550 family of switches. For information about the standard
Cisco IOS Release 12.1 commands, refer to the Cisco IOS documentation set available from the Cisco.com
home page by selecting Service and Support > Technical Documents. On the Cisco Product
Documentation home page, select Release 12.1 from the Cisco IOS Software drop-down list.
This guide does not provide procedures for configuring your switch. For detailed configuration
procedures, refer to the Catalyst 3550 Multilayer Switch Software Configuration Guide for this release.
This guide does not describe system messages you might encounter. For more information, refer to the
Catalyst 3550 Multilayer Switch System Message Guide for this release.

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Preface
Conventions
Conventions
This publication uses these conventions to convey instructions and information:
Command descriptions use these conventions:
•Commands and keywords are in boldface text.
•Arguments for which you supply values are in italic.
•Square brackets ([ ]) means optional elements.
•Braces ({ }) group required choices, and vertical bars ( | ) separate the alternative elements.
•Braces and vertical bars within square brackets ([{ | }]) mean a required choice within an optional
element.
Interactive examples use these conventions:
•Terminal sessions and system displays are in screen font.
•Information you enter is in boldface screen font.
•Nonprinting characters, such as passwords or tabs, are in angle brackets (< >).
Notes, cautions, and warnings use these conventions and symbols:
Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in
this manual.
Caution Means reader be careful. In this situation, you might do something that could result equipment damage
or loss of data.
Timesaver Means the following will help you solve a problem. The tips information might not be troubleshooting
or even an action, but could be useful information.

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Preface Related Publications
Related Publications
These documents provide complete information about the switch and are available from this Cisco.com
site:
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/index.htm
You can order printed copies of documents with a DOC-xxxxxx= number from the Cisco.com site and
from the telephone numbers listed in the“Obtaining Documentation” section on page xvii.
•Release Notes for the Catalyst 3550 Multilayer Switch (not orderable but available on Cisco.com)
Note Switch requirements and procedures for initial configurations and software upgrades tend to change and
therefore appear only in the release notes. Before installing, configuring, or upgrading the switch, refer
to the release notes on Cisco.com for the latest information.
•Catalyst 3550 Multilayer Switch Software Configuration Guide (order number DOC-7811194=)
•Catalyst 3550 Multilayer Switch Command Reference (order number DOC-7811195=)
•Catalyst 3550 Multilayer Switch System Message Guide (order number DOC-7811196=)
•Cluster Management Suite (CMS) online help (available only from the switch CMS software)
•Catalyst 3550 Multilayer Switch Hardware Installation Guide (order number DOC-7811358=)
•1000BASE-T Gigabit Interface Converter Installation Note (not orderable but is available on
Cisco.com)
•Catalyst GigaStack Gigabit Interface Converter Hardware Installation Guide
(order number DOC-786460=)
•Cisco Small Form-Factor Pluggable Modules Installation Notes (order number DOC-7815160=)
•Cisco CWDM GBIC and CWDM SFP Installation Note (not orderable but available on Cisco.com)
Obtaining Documentation
Cisco provides several ways to obtain documentation, technical assistance, and other technical
resources. These sections explain how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation on the World Wide Web at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
International Cisco websites can be accessed from this URL:
http://www.cisco.com/public/countries_languages.shtml

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Preface
Obtaining Technical Assistance
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM
package, which may have shipped with your product. The Documentation CD-ROM is updated regularly
and may be more current than printed documentation. The CD-ROM package is available as a single unit
or through an annual or quarterly subscription.
Registered Cisco.com users can order a single Documentation CD-ROM (product number
DOC-CONDOCCD=) through the Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/ordering_place_order_ordering_tool_launch.html
All users can order annual or quarterly subscriptions through the online Subscription Store:
http://www.cisco.com/go/subscription
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from
the Networking Products MarketPlace:
http://www.cisco.com/en/US/partner/ordering/index.shtml
•Nonregistered Cisco.com users can order documentation through a local account representative by
calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in
North America, by calling 800 553-NETS (6387).
Documentation Feedback
You can submit comments electronically on Cisco.com. On the Cisco Documentation home page, click
Feedback at the top of the page.
You can send your comments in e-mail to [e-mail].
You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, the Cisco
Technical Assistance Center (TAC) provides 24-hour, award-winning technical support services, online
and over the phone. Cisco.com features the Cisco TAC website as an online starting point for technical
assistance.

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Preface Obtaining Technical Assistance
Cisco TAC Website
The Cisco TAC website (http://www.cisco.com/tac) provides online documents and tools for
troubleshooting and resolving technical issues with Cisco products and technologies. The Cisco TAC
website is available 24 hours a day, 365 days a year.
Accessing all the tools on the Cisco TAC website requires a Cisco.com user ID and password. If you
have a valid service contract but do not have a login ID or password, register at this URL:
http://tools.cisco.com/RPF/register/register.do
Opening a TAC Case
The online TAC Case Open Tool (http://www.cisco.com/tac/caseopen) is the fastest way to open P3 and
P4 cases. (Your network is minimally impaired or you require product information). After you describe
your situation, the TAC Case Open Tool automatically recommends resources for an immediate
solution. If your issue is not resolved using these recommendations, your case will be assignedto a Cisco
TAC engineer.
For P1 or P2 cases (your production network is down or severely degraded) or if you do not have Internet
access, contact Cisco TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2
cases to help keep your business operations running smoothly.
To open a case by telephone, use one of the following numbers:
Asia-Pacific: [phone] (Australia: 1 800 805 227)
EMEA: [phone]
USA: 1 800 553-2447
For a complete listing of Cisco TAC contacts, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
TAC Case Priority Definitions
To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.
Priority 1 (P1)—Your network is “down” or there is a critical impact to your business operations. You
and Cisco will commit all necessary resources around the clock to resolve the situation.
Priority 2 (P2)—Operation of an existing network is severely degraded, or significant aspects of your
business operation are negatively affected by inadequate performance of Cisco products. You and Cisco
will commit full-time resources during normal business hours to resolve the situation.
Priority 3 (P3)—Operational performance of your network is impaired, but most business operations
remain functional. You and Cisco will commit resources during normal business hours to restore service
to satisfactory levels.
Priority 4 (P4)—You require information or assistance with Cisco product capabilities, installation, or
configuration. There is little or no effect on your business operations.

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Preface
Obtaining Additional Publications and Information
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online
and printed sources.
•The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as
ordering and customer support services. Access the Cisco Product Catalog at this URL:
http://www.cisco.com/en/US/products/products_catalog_links_launch.html
•Cisco Press publishes a wide range of networking publications. Cisco suggests these titles for new
and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking
Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design
Guide. For current Cisco Press titles and other information, go to Cisco Press online at this URL:
http://www.ciscopress.com
•Packet magazine is the Cisco quarterly publication that provides the latest networking trends,
technology breakthroughs, and Cisco products and solutions to help industry professionals get the
most from their networking investment. Included are networking deployment and troubleshooting
tips, configuration examples, customer case studies, tutorials and training, certification information,
and links to numerous in-depth online resources. You can access Packet magazine at this URL:
http://www.cisco.com/go/packet
•iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet
business strategies for executives. You can access iQ Magazine at this URL:
http://www.cisco.com/go/iqmagazine
•Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering
professionals involved in designing, developing, and operating public and private internets and
intranets. You can access the Internet Protocol Journal at this URL:
http://www.cisco.com/en/US/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html
•Training—Cisco offers world-class networking training. Current offerings in network training are
listed at this URL:
http://www.cisco.com/en/US/learning/index.html