Cisco WS-C4003 - Catalyst 4000 Chassis Switch, Catalyst 4000 Series, Catalyst 2948G, Catalyst 2980G Software Configuration Manual
Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
Software Configuration Guide
Catalyst 4000 Family
Catalyst 2948G
Catalyst 2980G
Software Releases 6.3 and 6.4
Customer Order Number: DOC-7812647=
Text Part Number: 78-12647-02
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS M ANUAL ARE SUBJECT TO CHA NGE WITHOUT NO TICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSI BILITY FOR THEIR APPLICA TION OF ANY PRODUCT S.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORT H IN THE INFORMATION PACKET T HAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE
OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The Cisco implementation of TCP head er compressi on is an adap tation of a program developed by the Universi ty of Ca lifornia, Berk eley (UCB) as part of UCB ’s public
domain version of the UNIX operatin g system. All rights reserved . Copyri ght © 1981 , Rege nts of the Uni versity of Calif ornia.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THE SE SUPPLIERS ARE PROVIDED “AS IS” WITH
ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAI M ALL WARRANTIE S, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NO NINFRINGEM ENT OR ARISING FROM A COURS E OF
DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING ,
WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO
OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE S.
This document is to be used in conjunction with the Software Configuration Guide and the Command Reference for your switch.
CCIP, the Cisco Arrow logo, the Cisco Powered Network mark, the Cisco System s Verified logo, Cisco Un ity, F ollow Me B rowsing, Form Share, iQ Break throu gh, iQ
Expertise, iQ FastTrack, the iQ Logo, iQ Net Readiness Scorecard, Networking Academy, ScriptShare, SMARTnet, TransPath, and Voice LAN are trademarks of Cisco
Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, Discover All That’s Possible, The Fastest Way to Increase Your Internet Quotient, and iQuick St udy are
service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, C isco
IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Syst ems Capital, the Cisco Sy stems logo, Empo wering the Internet Generation, Enterprise/Solver, EtherChannel,
EtherSwitch, Fast Step , GigaS tack, Inte rnet Quo tien t, IOS , IP/ TV, Lig htStr eam, MGX, MI CA, the Ne twor ker s logo, Ne twork Reg istrar, Packet, PIX, Post-Routing,
Pre-Routing, RateMUX, Registrar, SlideCast, StrataView Plus, Stratm, SwitchProbe, TeleRouter, and VCO are registered trademarks of Cisco Systems , Inc. and/or i ts
affiliates in the U.S. and certain other countries .
All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship
between Cisco and any other company. (0208 R)
Software Configuration Gui de—Cata lyst 4000 F ami ly, Cataly st 2948 G, Cata lyst 2980 G, Rel eases 6.3 and 6.4
Copyright © 2000-2003, Cis co Sys tems, In c.
All rights reserved.
iii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
CONTENTS
Preface xxiii
Audience xxiii
Organization xxiii
Related Documentation xxv
Conventions xxvi
Obtaining Documentation xxvii
World Wide Web xxvii
Documentation CD-ROM xxvii
Ordering Documentation xxvii
Documentat ion Feedback xxviii
Obtaining Technical Assistance xxviii
Cisco.com xxviii
Technical Assistance Center xxviii
Cisco TAC Web Site xxix
Cisco TAC Escalation Center xxix
PART
1 Getting Started
CHAPTER
1 Product Overview 1-1
Catalyst 4000 Family Switches 1-1
Catalyst 2948G Switch 1-2
Catalyst 2980G Switch 1-2
Supervisor Engine Software 1-3
CHAPTER
2 Using the Command-Line Interface 2-1
Overview of the Switch CLI 2-1
Accessing the Switch CLI 2-2
Accessing the CLI t hrough the Console Port 2-2
Accessing the CLI Through Telnet 2-2
Switch CLI Command Modes 2-3
Accessing Hel p 2-4
Command-Line Edit ing 2-5
History Substitution 2-5
Contents
iv
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Abbreviating a Command 2-6
Completing a Partial Command 2-6
Scrolling Down a Li ne or a Screen 2-7
Using Command Aliases 2-7
Specifying Modules, Ports, and VLANs 2-7
Specifying MAC Addresses 2-8
Specifying IP Addresses, Host Names, and IP Aliases 2-8
ROM Monitor Command-Line Interface 2-9
Catalyst4003 Bootup Display Example 2-9
CHAPTER
3 Configuring the Switch IP Address and Default Gateway 3-1
Understanding the Switch Management Interfaces 3-1
Understanding Automatic IP Configuration 3-2
Automatic IP Configuration Overview 3-2
Understanding How DHCP Works 3-3
Understanding How RARP Works 3-4
Preparing to Configure the IP Address and Default Gateway 3-4
Default IP Address and Default Gateway Configur ation 3-5
Setting the In-Ba n d (s c0 ) Int e rfa c e IP Ad dr es s 3-5
Setting the Management Ethernet (me1) Interface IP Address 3-6
Configuring Default Gateways 3-7
Configuring the SLIP (sl0) Interface on the Console Port 3-8
Using DHCP or RARP to Obtain an IP Address Configuration 3-10
Renewing and Releasing a DHCP-Assigned IP Address 3-11
PART
2 Configuring Ethernet Switching
CHAPTER
4 Configuring Ethernet and Fast Ethernet Switching 4-1
Understanding How Ethernet Works 4-1
Ethernet Overview 4-1
Switching Frames Between Segments 4-2
Building the Address Table 4-2
Default Etherne t and Fast Ethernet Configuration 4-2
Configuring Ethernet and Fast Ethernet Ports 4-3
Setting the Port Name 4-3
Setting the Port Priority Level 4-4
Setting the Port Speed 4-4
Contents
v
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Setting the Port Duplex Mode 4-5
Configuring a Ti meout Period for Ports in er rdisable State 4-6
Checking Connectivity 4-7
CHAPTER
5 Configuring Gigabit Ethernet Switching 5-1
Understanding How Gigabit Ethernet Works 5-1
Understanding How Gigabit Ethernet Flow Control Works 5-1
Flow-Control Overview 5-1
Sending and Receiving Pause Frames 5-2
Using Flow-Contr ol Keywords 5-2
Understanding How Port Negotiation Works 5-3
Understanding How Oversubscribed Gigabit Ethernet Works 5-3
Oversubscribed Gigabit Ethernet Overview 5-4
Oversubscribed Gigabit Ethernet Example 5-5
Default Gigabit Ethernet Configuration 5-6
Configuring Gigabit Ethernet 5-6
Setting the Port Name 5-7
Setting the Port Priority Level 5-7
Configuring Flow Control on Gigabit Ethernet Ports 5-8
Configuring Port Negotiation on Gigabit Ethernet Ports 5-8
Configuring a Ti meout Period for Ports in er rdisable State 5-9
Checking Connectivity 5-9
CHAPTER
6 Configuring Fast EtherChannel and Gigabit EtherChannel 6-1
Understanding How EtherChannel Works 6-1
EtherChannel Over view 6-2
Understanding Administrative Groups and EtherChannel IDs 6-2
Understanding the Port Aggregation Protocol 6-2
Understanding Frame Distribution 6-3
Default EtherCha nnel Configuration 6-4
Hardware Support for EtherChannel 6-4
EtherChannel Con figuration Guidelines an d Restrictions 6-4
Configuring EtherChannel 6-5
Creating an EtherChannel 6-5
Defining an EtherChannel Administrative Group 6-6
Setting the EtherChannel Spanning Tree Port Cost 6-7
Setting the EtherChannel Spanning Tree Port VLAN Cost 6-7
Removing an EtherChannel Bundle 6-8
Displaying EtherChannel Configuration Information 6-9
Contents
vi
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Displaying Ethe rChannel Traffic Statistics 6-10
Displaying EtherChannel PAgP Statistics 6-11
EtherChannel Con figuration Examples 6-11
Four-Port Fast EtherChannel Configuration Example 6-11
Two-Port Gigabit EtherChannel Configuration Example 6-13
PART
3 Spanning Tree
CHAPTER
7 Configuring Spanning Tree 7-1
How Spanning Tree Protocols Work 7-1
How a Topology Is Created 7-2
How a Switch or Port Becomes the Root Switch or Root Port 7-3
How Bridge Prot oc o l Da ta Un it s W o rk 7-3
Spanning Tree Port States 7-4
Blocking State 7-5
Listening State 7-7
Learning State 7-8
Forwarding State 7-9
Disabled State 7-9
Understanding PVST+ and MISTP Modes 7-10
PVST+ Mode 7-11
MISTP Mode 7-11
MISTP-PVS T + M o de 7-11
Bridge Identifiers 7-12
MAC Address Allocation 7-12
MAC Address Reduction 7-12
Using PVST+ 7-12
Default PVST+ Confi guration 7-13
Configuring PVST+ Bridge ID Priority 7-13
Configuring PVST+ Port Cost 7-15
Configuring PVST+ Port Priority 7-15
Configuring PVST + Default Port Cost Mode 7-16
Configuring PVST + Port VLAN Cost 7-16
Configuring PVST+ Port VLAN Priority 7-17
Disabling the PVST+ Mode on a VLAN 7-18
Using MISTP-PVST+ or MISTP 7-18
Default MISTP Configuration 7-19
Enabling MIS T P-PVST+ or MISTP 7-19
Configuring a MISTP Instance 7-21
Contents
vii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Configuring MISTP Bridge ID Priority 7-21
Configuring MISTP Port Cost 7-22
Configuring MISTP Port Priority 7-22
Configuring MISTP Port Instance Cost 7-23
Configuring MISTP Port Instance Priority 7-23
Enabling a MIS T P In st ance 7-24
Mapping VLANs to a MISTP Instance 7-25
Determining MISTP Ins tance—VLAN Mapping Conflicts 7-25
Unmapping VLANs from a MIST P Instance 7-26
Disabling MISTP-PVST+ or MISTP 7-26
Configuring a Root Switch 7-27
Configuring a Pr imary Root Switch 7-27
Configuring a Secondary Root Switch 7-28
Configuring a Root Switch to Improve Convergence 7-29
Using Root Guard—Preventing Switches from Becoming Root 7-30
Configuring Spanning Tree Timers 7-30
Configuring Hello Time 7-31
Configuring For w ard Delay Time 7-31
Configuring Maximum Aging Time 7-32
Understanding How BPDU Skewi ng Works 7-33
Configuring Spa nning Tree BPDU Skewing 7-33
CHAPTER
8 Configuring Spanning Tree PortFast, UplinkFast, and BackboneFast, and Loop Guard 8-1
Understanding How PortFast Works 8-1
Configuring PortFast 8-2
Enabling Spanning Tree PortFast 8-2
Disabling Spanning Tree PortFast 8-3
Understanding How PortFast BPDU Guard Works 8-3
Configuring PortFast BPDU Guard 8-3
Enabling PortFast BPDU Guard 8-4
Disabling PortFast BPDU Guard 8-5
Understanding How PortFast BPDU Filtering Works 8-6
Configuring PortFast BPDU Filtering 8-6
Enabling PortFast BPDU Filtering 8-6
Disabling Port Fast BPDU Filtering 8-7
Understanding How UplinkFast Works 8-8
Configuring Upl inkFast 8-9
Contents
viii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Enabling UplinkFast 8-9
Disabling UplinkFast 8-10
Understanding How BackboneFast Works 8-11
Configuring BackboneFast 8-13
Enabling BackboneFast 8-13
Displaying BackboneFast Statistics 8-14
Disabling BackboneFast 8-14
Understanding How Loop Guard Works 8-15
Configuring Loop Guard 8-17
Enabling Loop Guard 8-17
Disabling Loop Guard 8-17
PART
4 Configuring VLANs and VLAN Trunks
CHAPTER
9 Configuring VTP 9-1
Understanding How VTP Wo rks 9-1
VTP Domain 9-2
VTP Modes 9-2
VTP Advertisements 9-2
VTP Version 2 9-3
VTP Pruning 9-3
Default VTP Confi guration 9-5
VTP Configuration Guidelines 9-5
Configuring VTP 9-5
Configuring a VTP Server 9-6
Configuring a VTP Client 9-6
Disabling VTP (VTP Transparent Mode) 9-7
Enabling VTP Version 2 9-7
Disabling VTP Vers ion 2 9-8
Configuring VTP Pruning 9-9
Disabling VTP Pruning 9-10
Monitoring VTP 9-10
CHAPTER
10 Configuring VLANs 10-1
Understanding How VLANs Work 10-1
VLAN Default Configuration 10-3
VLAN Configuration Guidelines 10-3
Configuring VLANs 10-3
Contents
ix
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Creating or Modifying an Ethernet VLAN 10-4
Assigning Switch Ports to a VLAN 10-4
Mapping 802.1Q VLANs to ISL VLANs 10-5
Clearing 802.1Q-to-ISL VLAN Mappings 10-6
Deleting a VLAN 10-7
Configuring Private VLANs 10-7
Understanding How Private VLANs Work 10-7
Private VLAN Configuration Guidelines 10-9
Creating a Priv at e VLA N 10-10
Viewing the Port Capabi lity of a Private VLAN Port 10-13
Deleting a Priv at e VLA N 10-13
Deleting an Isolated or Community VLAN 10-14
Deleting a Private VLAN Mapping 10-14
CHAPTER
11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports 11-1
Understanding How VLAN Trunks Work 11-1
Trunking Overview 11-1
Trunking Modes and En capsulation Types 11-2
Trunking Support 11-4
802.1Q Trunk Restrictions 11-4
Default Trunk Configuration 11-5
Configuring a Trunk Link 11-5
Configuring an 802.1Q Trunk 11-5
Defining the Allo w e d V LA N s on a Tr un k 11-6
Disabling a Trunk Port 11-7
Example VLAN Trunk Configurations 11-7
802.1Q Trunk over Gigabit EtherChannel Lin k Example 11-8
Load-Sharing VLAN Traffic over Parallel Trunks Example 11-11
802.1Q Nonegotiate Trunk Configuration Example 11-18
Disabling VLAN 1 on a Tr unk Link 11-21
CHAPTER
12 Configuring Dynamic Port VLAN Membership with VMPS 12-1
Understanding How VMPS Works 12-1
VMPS and Dynamic Port Hard ware and Software Requirements 12-2
Default VMPS and Dynamic Port Configuration 12-2
Dynamic Port VLAN Membership and VMPS Configuration Guidelines 12-3
Contents
x
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Configuring VMPS and Dynamic Port VLAN Membership 12-3
Creating the VMPS Database 12-3
Configuring VMPS 12-4
Configuring Dyna mic Ports on VMPS Clients 12-5
Configuring Static VLAN Port Membership 12-6
Troubleshooting VMPS and Dynamic Port VLAN Membership 12-6
Troubleshooting VMPS 12-6
Troubleshooting Dynamic Port VLAN Membership 12-7
Dynamic Port VLAN Membership with VMPS Configuration Examples 12-7
VMPS Databa se Co nfiguration Fi le Exa m p le 12-7
Dynamic Port VLAN Membership Configuration Example 12-8
Dynamic Port VLAN Membership with Auxiliary VLANs 12-10
Configuratio n Guidelines 12-11
Configuring Dynamic Port VLAN Membership with Auxiliary VLANs 12-11
CHAPTER
13 Configuring GVRP 13-1
Understanding How GVRP Works 13-1
GVRP Hardware and Software Requirements 13-1
Default GVRP Configuration 13-2
GVRP Configuration Guidelines 13-2
Configuring GVRP 13-2
Enabling GVRP Globally 13-3
Enabling GVRP on Individual 802.1Q Trunk Ports 13-3
Enabling GVRP Dynamic VLAN Creation 13-4
Configuring GVRP Registration 13-5
Setting GVRP Normal Registration 13-5
Setting GVRP Fixed Registration 13-5
Setting GVRP Forbidden Registration 13-5
Sending GVRP VLAN Declarations from Blocking Ports 13-6
Setting the GARP Timers 13-6
Displaying GVRP Sta tistics 13-7
Clearing GVRP Statistics 13-8
Disabling GVRP on In dividual 802.1Q Trunk Ports 13-8
Disabling GVRP Globally 13-8
Contents
xi
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
PART
5 Directing and Filtering Traffic
CHAPTER
14 Configuring QoS 14-1
Understanding How QoS Works 14-1
Overview of QoS 14-1
QoS Terminology 14-2
Understanding Classification and Marking at the Ingress Port 14-3
Understanding Scheduling 14-3
Software Requirements 14-4
QoS Default Configuration 14-4
Configuring QoS 14-4
Enabling QoS Globally 14-5
Configuring th e Default CoS Value for the Switch 14-5
Reverting to the Default Switch CoS Value 14-5
Mapping CoS Values to Transmit Queues and Drop Thresholds 14-6
Reverting to the Default CoS-to-Transmit Queue and Drop Threshold Mapping 14-6
Displaying QoS Information 14-7
Reverting to QoS Defaults 14-7
Disabling QoS 14-7
CHAPTER
15 Configuring Multicast Services 15-1
Understanding How Multi casting Works 15-1
Understanding Multicasting and Multicast Services Operation 15-1
Joining a Multicast Group 15-2
Leaving a Multicast Group 15-2
Understanding GMRP Operation 15-3
Configuring CGMP 15-4
CGMP Hardware and Software Re qu ir ements 15-4
Default CGMP Configuration 15-4
Enabling CGMP 15-4
Enabling CGMP Fast-Leave Processing 15-5
Displaying Multicast Router Information 15-6
Displaying Multicast Group Information 15-7
Checking CGMP Statistics 15-7
Disabling CGMP Fast-Leave Processing 15-8
Disabling CGMP 15-8
Configuring GMRP 15-8
GMRP Software Requirements 15-9
Default GMRP Configuration 15-9
Contents
xii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Enabling GMRP Globally 15-9
Enabling GMRP on Individual Switch Ports 15-10
Disabling GMRP on Individual Switch Ports 15-10
Enabling GMRP Forward-All Option 15-11
Disabling GMRP Forward-All Option 15-11
Configuring GMRP Registration 15-12
Setting Normal Regi stration Mode 15-12
Setting Fixed Registration Mode 15-12
Setting Forbidden Registration Mode 15-13
Setting the GARP Timers 15-13
Displaying GMRP Statistics 15-14
Clearing GMRP Statistics 15-15
Disabling GMRP on the Switch 15-15
Configuring Multicast Router Ports and Group Entries 15-16
Specifying Multicast Router Ports 15-16
Configuring Multicast Groups 15-16
Clearing Multic ast Router Ports 15-17
Clearing Multic ast Group Entries 15-17
CHAPTER
16 Configuring Port Security 16-1
Understanding How Port Security Works 16-1
Allowing Traffic Ba sed on the Host MAC Address 16-1
Restricting Traffic Based on the Host MAC Address 16-3
Port Security Configuration Guidelines 16-3
Configuring Port Security 16-3
Enabling Port Se cu ri ty 16-4
Specifying the Maximu m Nu mber of Secure MAC Addresses 16-4
Specifying the Port Security Age Time 16-5
Clearing MAC Addresses 16-5
Specifying Security Violation Action 16-6
Specifying Shutdown Time 16-6
Disabling Port Security 16-7
Restricting Traffic Based on Host MAC Address 16-7
Monitoring Po rt Security 16-8
CHAPTER
17 Configuring the IP Permit List 17-1
Understanding How the IP Permit List Works 17-1
IP Permit List Default Configuration 17-2
Configuring the IP Permit List 17-2
Contents
xiii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Adding IP Addresses to the IP Permit List 17-2
Enabling IP Permi t List 17-3
Disabling the IP Permit List 17-4
Clearing an IP Permit List Entry 17-4
CHAPTER
18 Configuring Protocol Filtering 18-1
Understanding How Protocol Filtering Works 18-1
Default Protoco l Filtering Configuration 18-2
Configuring Protocol Filtering 18-2
Configuring Protocol Filtering 18-3
Disabling Protocol Filtering 18-3
PART
6 Monitoring and Managing the Switch
CHAPTER
19 Checking Port Status and Connectivity 19-1
Checking Module Status 19-1
Checking Port Status 19-2
Checking Port Capabilities 19-4
Using Telnet 19-5
Changing the Login Timer 19-6
Using Secure Shell Encryption for Telnet Sessions 19-6
Monitoring User Sessions 19-7
Using Ping 19-8
Understanding How Ping Works 19-8
Executing Ping 19-9
Using Layer 2 Tr ac e route 19-10
Usage Guidelines 19-10
Identifying a L ayer 2 Path 19-11
Using IP Traceroute 19-11
Understanding How IP Traceroute Works 19-11
Executing IP Traceroute 19-12
CHAPTER
20 Configuring CDP 20-1
Understanding How CDP Works 20-1
Default CDP Config uration 20-1
Configuring CDP 20-2
Contents
xiv
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Setting the CDP Glob al Enable State 20-2
Setting the CDP Enable State on a Port 20-3
Setting the CDP Message Interval 20-4
Setting the CDP Holdtime 20-4
Displaying CDP Neighbor Information 20-4
CHAPTER
21 Using Switch TopN Reports 21-1
Understanding How Switch TopN Reports Works 21-1
Overview of Switch TopN Reports 21-1
Running Switch TopN Re ports without the Background Option 21-2
Running Switch TopN Re ports with the Background Option 21-2
Running and Viewing Switch To p N Rep o rt s 21-3
CHAPTER
22 Configuring UDLD 22-1
Understanding How UDLD Works 22-1
UDLD Software and Hardware Requirements 22-2
Default UDLD Configuration 22-3
Configuring UDLD 22-3
Enabling UDLD Globally 22-3
Enabling UDLD on Indi vidual Ports 22-4
Disabling UDLD on Individual Ports 22-4
Disabling UDLD Globally 22-4
Specifying the UDLD Message Interval 22-5
Enabling UDLD Aggressive Mode 22-5
Displaying the UDLD Configuration 22-6
CHAPTER
23 Configuring SNMP 23-1
SNMP Terminology 23-1
Understanding How SNMP Works 23-3
Secuirty Models and Levels 23-3
SNMP ifindex Persistence Feature 23-4
Understanding How SNMPv1 and SNMPv2c Work 23-4
SNMPv1 and SNMPv2c Default Configuration 23-5
Configuring SNMPv1 and SNMPv2c from an NMS 23-5
Configuring SNMPv1 and SNMPv2c from the CLI 23-6
Understanding SNMPv3 23-7
Benefits 23-7
SNMP Entity 23-7
Contents
xv
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Dispatcher 23-8
Message Processing Subsystem 23-8
Security Subsystem 23-9
Access Control Subsystem 23-9
Applications 23-9
Configuring SNMPv3 from an NMS 23-10
Configuring SNMPv3 from the CLI 23-10
Using CiscoWorks2000 23-13
CHAPTER
24 Configuring RMON 24-1
Understanding How RMON Works 24-1
Enabling RMON 24-2
Viewing RMON Data 24-2
Supported RMON and RMON2 MIB Objects 24-2
CHAPTER
25 Configuring SPAN and RSPAN 25-1
Understanding How SPAN and RSPAN Work 25-1
SPAN Session 25-1
Destination Por t 25-2
Source Port 25-2
Reflector Port 25-3
Ingress SPAN 25-3
Egress SPAN 25-3
VSPAN 25-3
Trunk VLAN Filtering 25-4
SPAN Traffic 25-4
SPAN and RSPAN Session Limit s 25-4
Configuring SPAN 25-4
Understanding How SPAN Works 25-4
SPAN Configuration Guidelines 25-5
Configuring SPAN 25-6
Configuring RSPAN 25-8
RSPAN Software and Hardware Requirements 25-8
Understanding How RSPAN Work 25-8
RSPAN Configuration Guidelines 25-9
Configuring RSPAN 25-10
Disabling RSPAN Sessions 25-13
RSPAN Configuration Examples 25-14
Contents
xvi
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Configuring a Single RSPAN Session 25-14
Modifying an Active RSPAN Session 25-14
Adding RSPAN Source Ports in Intermediate Switches 25-15
PART
7 Administering the Switch
CHAPTER
26 Administering the Switch 26-1
Setting the System Name and System Prompt 26-1
Configuring a Sta tic System Name and Prompt 26-2
Setting a Static System Name 26-2
Setting a Static System Prompt 26-2
Clearing the System Name 26-3
Setting the System Contact and Location 26-3
Setting the System Clock 26-4
Creating a Login Banner 26-4
Configuring a Login Banner 26-4
Clearing the Login Banner 26-5
Defining and Using Command Aliases 26-5
Defining and Using IP Aliases 26-7
Configuring Permanent and Static ARP Entries 26-7
Configuring Static Routes 26-9
Scheduling a System Reset 26-10
Scheduling a Reset at a Specific Time 26-10
Scheduling a Reset Within a Specified Amount of Time 26-11
Power Management 26-11
Power Redundancy 26-12
Limitations of the 1+1 Redundancy Mode 26-12
Power Consumption of Modules 26-14
Setting the Power Budget 26-15
Generating System Status Reports for Tech Support 26-16
CHAPTER
27 Configuring Switch Acces s Using AAA 27-1
Understanding How Authentication Works 27-1
Authentication Overview 27-2
Understanding How Login Authentication Works 27-2
Understanding How Local Authentication Works 27-2
Understanding How TACACS+ Authentication Works 27-3
Contents
xvii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Understanding How RADIUS Aut hentication Works 27-4
Understanding How Kerberos Authentication Works 27-4
Using Kerberized Login Procedure 27-6
Using a Non-Kerberi zed Login Procedure 27-6
Understanding How 802.1x Authentication Works 27-7
Traffic Contr ol 27-9
Authentication Server 27-9
802.1x Parameters Configurable on the Switch 27-9
Configuring Authentication 27-9
Authentication Default Configuration 27-10
Authentication Configuration Guidelines 27-11
Configuring Login Authentication 27-12
Setting Authentication Login Attempts on the Switch 27-12
Setting Authentication Login Attempts for Privileged Mode 27-13
Configuring Local Authentication 27-13
Enabling Loc al Authentica ti on 27-14
Setting the Login Password 27-14
Setting the Enable Password 27-15
Disabling Local Authentication 27-15
Recovering a Lost Password 27-16
Configuring TACACS+ Authentication 27-17
Specifying TACACS+ Servers 27-17
Enabling TACACS+ Authentication 27-18
Specifying the TACACS+ Key 27-19
Setting the TACACS+ Timeout Interval 27-19
Setting the TACACS+ Lo gin Attempts 27-20
Enabling TACACS+ Directed Request 27-20
Disabling TACACS+ Directed Request 27-21
Clearing TACACS+ Servers 27-21
Clearing the TACACS+ Key 27-22
Disabling TACACS+ Authentication 27-22
Configuring RADIUS Authentication 27-23
Specifying RADIUS Servers 27-23
Enabling RADIUS Authentication 27-24
Specifying the RADIUS Ke y 27-25
Setting the RADIUS Timeout Interval 27-26
Setting the RADIUS Retransmit Count 27-26
Setting the RADIUS Dead Ti me 27-27
Clearing RADIUS Servers 27-28
Contents
xviii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Clearing the RADIUS Key 27-28
Disabling RADIUS Authentication 27-29
Configuring Kerberos Authentication 27-30
Enabling Kerberos 27-31
Defining the Kerberos Local-Realm 27-31
Specifying a Kerberos Server 27-32
Mapping a Kerberos Realm t o a Host Name or DNS Domain 27-33
Copying SRVTAB Files 27-33
Deleting an SRVTAB Ent ry 27-34
Enabling Credentials Forwarding 27-35
Disabling Credentials Forwarding 27-36
Defining a Priv ate DES Key 27-37
Encrypting a Telnet Session 27-37
Monitoring and Maintaining Kerberos 27-38
Configuring 802.1x Authentication 27-39
Enabling 802.1x Globally 27-39
Disabling 802.1x Globally 27-40
Enabling and Ini tializing 802.1x Authentication for Individual Ports 27-40
Setting and Enabl ing Automatic Reauthenti cation of the Supplicant 27-41
Manually Reauthenticating the Supplicant 27-42
Enabling Multiple Hosts 27-42
Disabling Multiple Hosts 27-42
Setting the Quiet Period 27-43
Setting the Authe n ticator-to-Supplic ant Retransmission Time for EAP-Request/Identi ty
Frames
27-43
Setting the Back- End Authenticator-to- S upplicant Retransmission Time for EAP-Request
Frames
27-43
Setting the B ack-End Aut henticator- to-Authent ication- Server Retran smission T ime for Trans port
Layer Packets
27-44
Setting the Back-End Authenticator-to-S upplicant Frame-Retransmission Number 27-44
Resetting the 802 .1x Configuration Para meters to the Default Values 27-45
Setting the Trace S everity 27-45
Using the show Commands 27-46
Authentication Example 27-47
Understanding How Authorization Works 27-49
Authorizatio n Overview 27-49
Authorizatio n Events 27-49
TACACS+ Primary Options and Fallback Options 27-49
TACACS+ Command Authorization 27-50
RADIUS Authorization 27-50
Contents
xix
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Configuring Authorization 27-51
Authorizatio n Default Configuration 27-51
TACACS+ Authorization Configuration Gu idelines 27-51
Configuring TACACS+ Authorization 27-51
Enabling TACACS+ Authorization 27-52
Disabling TACACS+ Authorization 27-53
Authorizatio n Example 27-54
Understanding How Accounting Works 27-55
Accounting Overview 27-56
Accounting Events 27-56
Specifying When to Create Accounting Records 27-57
Specifying RADIUS Servers 27-57
Updating the Server 27-58
Suppressing Accounting 27-58
Configuring Accounting 27-58
Accounting Default Configuration 27-58
Accounting Configuration Guidelines 27-59
Configuring Accounting 27-59
Enabling Accounting 27-59
Disabling Accoun ting 27-61
Accounting Example 27-62
CHAPTER
28 Modifying the Switch Boot Configuration 28-1
Understanding How the Switch Boot Configuration Works 28-1
Understanding the Boot Process 28-1
Understanding the ROM Mo nitor 28-2
Understanding the Configuration Register 28-2
Understanding the BOOT Environment Variable 28-3
Understanding the CONFIG_FILE Environment Variable 28-3
Default Switch Boot Configuration 28-4
Setting the Configuration Register 28-4
Setting the Boot Field in the Configuration Register 28-4
Setting CONFIG_FILE Recurrence 28-5
Setting the Switch to Ignore the NVRAM Configuration 28-6
Setting the BOOT Environment Variable 28-7
Setting the BOOT Environment Variable 28-7
Clearing the BOOT Environment Variable Settings 28-7
Contents
xx
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Setting and Clearing the CONFIG_FILE Environment Variable 28-8
Setting the Variable 28-8
Clearing the Variable Settings 28-8
Displaying the Switch Boot Configuration 28-9
CHAPTER
29 Working with System Software Images 29-1
Software Image Naming Conventions 29-1
Downloading System Software Images to the Switch UsingTFTP 29-1
Understanding How TFTP Software Image Downloads Work 29-2
Preparing to Downl oad an Image Using TFTP 29-2
Downloading Super visor Engine Images Using TFTP 29-2
Example TFTP Download Procedures 29-3
Uploading System Sof tware Images to a TFTP Server 29-5
Preparing to Upload an Image to a TFTP Server 29-5
Uploading Software Images to a TFTP Server 29-5
Downloading System Software Images to the Switch Using rcp 29-6
Understanding How rcp Software Image Downloads Work 29-6
Preparing to Downl oad an Image Using rcp 29-6
Downloading Super visor Engine Images Using rcp 29-6
Sample rcp Download Procedures 29-7
Uploading System Sof tware Images to an rcp Server 29-9
Preparing to Upload an Image to an rcp Server 29-9
Uploading Softwar e Images to an rcp Server 29-9
CHAPTER
30 Using the Flash File System 30-1
Using the Flash File System 30-1
Setting the Default Flash Device 30-1
Setting the Text File Configuration Mode 30-2
Listing the Files on a Flash Device 30-3
Displaying the Contents of a File on a Flash Device 30-4
Copying Files 30-4
Deleting Files 30-6
Restoring Deleted Files 30-7
Verifying a File Checksum 30-7
Contents
xxi
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
CHAPTER
31 Working with Configuration Files 31-1
Guidelines for Creating and Using Configuration Files 31-1
Creating a Configuration File 31-2
Configuring the Switch Using a File in Flash Memory 31-2
Copying Configuration Files Using TFTP 31-3
Downloading Configuration Files from a TFTP S erver 31-3
Preparing to Downl o ad a Configuration File Using TFTP 31-4
Configuring the Switch Using a File on a TFTP Server 31-4
Uploading Configuration Files to a TFTP Server 31-5
Preparing to Upload a Configuration File to a TFTP Server 31-5
Uploading a Configuration File to a TFTP Server 31-5
Copying Configuration Files Using rcp 31-6
Downloading Configuration Files from an rcp Server 31-6
Preparing to Downl o ad a Configuration File Using rcp 31-6
Configuring the Switch Using a File on an rcp Server 31-6
Uploading Configuration Files to an rcp Server 31-7
Preparing to Upload a Configuration File to an rcp Server 31-7
Uploading a Configuration File to an rcp Server 31-7
Clearing the Configuration 31-8
CHAPTER
32 Configuring Switch Acceleration 32-1
Understanding Switch Acceleration 32-1
Switch Acceleration Configuration Modes 32-2
Configuring Switch Acceleration 32-3
Displaying Switch Acceleration Information 32-3
Backplane Channel Module 32-3
CHAPTER
33 Configuring System Message Logging 33-1
Understanding How System Message Logging Works 33-1
System Log Message Format 33-3
Default System Message Logging Configuration 33-4
Configuring System Message Logging 33-4
Configuring Session Logging Settings 33-4
Configuring the System Message Logging Levels 33-5
Changing the Loggi ng Timestamp Enable State 33-6
Specifying the Logging Buffer Size 33-6
Configuring the syslog Daemon on a UNIX syslog Se rver 33-7
Configuring syslog Servers 33-7
Contents
xxii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Displaying the Lo gging Configuration 33-8
Displaying System Me ssages 33-9
CHAPTER
34 Configuring DNS 34-1
Understanding How DNS Works 34-1
DNS Default Co nf ig ur ation 34-1
Configuring DNS 34-2
Setting Up and Enabling DNS 34-2
Clearing a DNS Server 34-3
Clearing the DNS Domain Name 34-3
Disabling DNS 34-3
CHAPTER
35 Configuring NTP 35-1
Understanding How NTP Works 35-1
Default NTP Config uration 35-2
Configuring NTP 35-2
Configuring NTP i n Broadcast-Client Mode 35-3
Configuring NTP i n Client Mode 35-3
Configuring Authentication in Client Mode 35-4
Setting the Time Zone 35-5
Enabling the Daylight Saving Time Adjustment 35-5
Disabling the Daylight Saving Time Adjustment 35-7
Clearing the Ti m e Zo ne 35-7
Clearing NTP Servers 35-7
Disabling NTP 35-8
PART
8 Appendix
APPENDIX
A Acronyms A-1
INDEX
xxiii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
This preface describes t he intende d audien ce for this manual , how it is organized, the do cument
conventions, and how to obtain additional documenta ion and tec hnical supp ort.
Audience
This guide is for experien ced network adminis trato rs who are re sponsibl e for configurin g and
maintaining Catalyst enterprise LAN switches.
Organization
The major sections of this guide are as follows:
Chapter Title Description
Part 1—Getting Started
Chapter 1 Product Overview Presents an over vie w o f the Cataly st enterpr ise LAN
switches.
Chapter 2 Using the Comma nd- Line
Interface
Describes how to use the different com mand-lin e
interfaces (CLIs).
Chapter 3 Configuring the Switch IP
Address and Default Gateway
Describes how to perform a baseline configuration of
the switch.
Part 2—Configuring Ethernet Switching
Chapter 4 Configuring Ethernet and Fast
Ethernet Switc hing
Describes how to configure Ether ne t and Fast
Ethernet switching on the switch.
Chapter 5 Configuring Gigabit Ethernet
Switching
Describes how to configure Gigabit Ethern et
switching on the switch.
Chapter 6 Configuring Fast EtherChannel
and Gigabit Et h erCha nnel
Describes how to configure Fast EtherChannel and
Gigabit EtherChanne l po rt bundl es.
xxiv
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Organization
Part 3—Spanning Tree
Chapter 7 Configuring Spanning Tree Describes how to configure the Sp an ning Tree
Protocol and explains how spanning tree works.
Chapter 8 Configuring Spanning Tree
PortFast, UplinkFast, and
BackboneFast, and Loop Guard
Describes how to configure the span ning t ree
PortFast, UplinkFast, and BackboneFast features.
Part 4—Configuring VLANs and VLAN Trunks
Chapter 9 Configuring VTP Describes how to configure VLAN Trunk Protocol
(VTP) on the switch.
Chapter 10 Configuring VLA Ns Describes how to configure VLANs and private
VLANs on the switch.
Chapter 11 Configuring VLA N Trunks on
Fast Ethernet and G igabi t
Ethernet Po rts
Describes how to configure Inter-Switch Link ( ISL )
and IEEE 802.1Q VLAN trunks on Fast Ethernet and
Gigabit Ethernet p orts.
Chapter 12 Configuring Dyna mic Port
VLAN Membership with VMPS
Describes how to configure VLAN Membership
Policy Server (VMPS) and dy namic po rts o n the
switch.
Chapter 13 Configuring GVR P Describes how to configure GARP VLAN
Registration Protocol (GVR P) on the sw itch.
Part 5—Directing and Filtering Traffic
Chapter 14 Configuring QoS Describes how to configure quality of service (QoS).
Chapter 15 Configuring Multicast Services Describes how to configure Cisco Group
Management Protocol (CGMP), Internet Group
Management Protocol (IGMP) snooping, and GARP
Multicast Registratio n Pr otoc ol ( GMR P) o n the
switch.
Chapter 16 Configuring Port Secur ity Describes how to configure po rt s ecur ity on the
switch.
Chapter 17 Configuring the IP Permit List Describes how to configure IP permit list on the
switch.
Chapter 18 Configuring Protocol Filtering Describes how to configure protocol filtering on
Ethernet, Fast Ethernet, and Gigabit Ethernet ports.
Part 6—Monitoring and Managing the Switch
Chapter 19 Checking Port Status and
Connectivity
Describes how to display information about modules
and switch ports and how to check connectivity using
ping, Telnet, and IP traceroute.
Chapter 20 Configuring CDP Describes how to configure Cisco Discovery
Protocol (CDP) on the switch.
Chapter 21 Using Switch TopN Reports Describes how to generate swi tch TopN reports on
the switch.
Chapter 22 Configuring UDL D Describes how to configure the UniDirectional Link
Detection (UDLD) protocol on the switch.
Chapter 23 Configuring SNMP Describes how to configure the Si mple Networ k
Management Protocol (SNMP) on the switch.
Chapter Title Description
xxv
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Related Documentation
Related Documentation
The following publications are available for the Catalyst enterprise LAN switches:
• Catalyst 4000 Family Installation Guide
• Catalyst 4912G Installation Guide
• Catalyst 2948 G and 2980G In stallatio n Guide
• Quick Software Configuration—Catal yst 5000 Family, 4000 Family, 2926G Serie s, 2948G, and
2980G Switches
• Command Reference—Catalyst 4000 Family, Catalyst 2948G, and Catalyst 298 0G Swi tches
• Layer 3 Switching Soft ware Configuration Guide—Catalyst 5000 Family, 4000 Family,
2926G Series, 292 6 Series, 2948G, an d 298 0G Sw itche s
• System Message Guide—Catalyst 6000 Family, 5000 Family, 4000 Family, 2926G Seri es, 2 948G,
and 2980G Switches
• Release Notes for Catalyst 4000 Family Supervisor Engine Sof tware Release 6 .x
Chapter 24 Configuring RMO N Describes how to configure Remote Monitoring
(RMON) on the switch.
Chapter 25 Configuring SPAN and RSPAN Describes how to configure the Switc h Port Analyzer
(SPAN) on the switch.
Part 7—Administering the Switch
Chapter 26 Administering the Switch Describes how to set the system name, create a login
banner, and perform other administrative tasks on the
switch.
Chapter 27 Configuring Switch Acces s
Using AAA
Describes how to configure local and TACACS+
authentication on the switch.
Chapter 28 Modifying the Switch Boot
Configuration
Describes how to modify the switch boot
configuration, includ ing the BO OT environment
variable and the configuration registe r.
Chapter 29 Working with System Software
Images
Describes how to download and upload system
software images.
Chapter 30 Using the Flash File System Describes how to work with the Flash file system
available on some switch platforms.
Chapter 31 Working with Configuration
Files
Describes how to create, download, and upload
switch configuration files.
Chapter 32 Configuring Switch
Acceleration
Describes the Backpla ne Channel module and the
switch acceleration feature.
Chapter 33 Configuring Syste m Message
Logging
Describes how to configure system message logging
(syslog) on the swit ch.
Chapter 34 Configuring DNS Describes how to configure Domain Name System
(DNS) on the switch.
Chapter 35 Configuring NTP Describes how to configure Network Time Protocol
(NTP) on the switch.
Chapter Title Description
xxvi
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Conventions
Conventions
Throughout this publication, these conventions are used when referring to switch platforms:
• Catalyst enterprise LAN switches—Refers to the Catalyst 4000 family, Catalyst 2948G, and
Catalyst 2980G switches.
• Catalyst 4000 family switches—Refers to t he C ata lyst 4003, Catalyst 4 006 , and C atalyst 4912G
switches.
Command descriptions use these conventions:
Screen examples use these conventions:
boldface font Commands and keywords a re i n boldface.
italic font Arguments for which you supply values are in ita li cs.
[ ] Elements in square brackets are optional.
{x | y | z} Alternative keywords are grouped in braces and separa ted by vertical
bars.
[x | y | z] Optional alternative keywords are grouped in brackets and separated by
vertical bars.
string A nonquoted set of chara cters. Do no t use quo tation m arks a ro und th e
string or the string will include the quotation marks.
screen font Terminal sessions and information the system displays are in screen
font.
boldface screen font Information you must enter is in boldface screen font .
italic screen font Arguments for which you supply values are in italic screen fo nt.
^ The symbol ^ represents the key labeled Control—for example, the key
combination ^D in a screen display means hold down the Control key
while you press the D key.
< > Nonprinting charact ers, such as pa sswords are in angle brackets.
[ ] Default responses to system prompts are in square brackets.
!, # An exclamation point (!) or a po und sign (#) at the beginning of a line
of code indicates a comm ent l ine.
.
.
.
Indicates that screen outp ut not r elevant to the ex am pl e w a s removed to
save space and preserve clarity.
xxvii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Obtaining Documentation
Notes use these conventions:
Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the
publication.
Cautions use these conventions:
Caution Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Obtaining Documentation
These sections explain how to obtain docu mentation from Cisco Syste ms.
World Wide Web
You can access the m ost c urre nt C isco doc ume ntati on on t he World Wide Web at this U RL:
http://www.cisco.com
Translated documentation is available at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM
package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may
be more current than printed documentation. The CD-ROM package is available as a single unit or
through an annual subscription.
Ordering Documentation
You can order Cisco documentation i n these ways:
• Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from
the Networking Produ cts Market Pla ce:
http://www.cisco.com/cgi-bin/order/order_root.pl
• Re gistered Cisco.com users can order the Documentation CD-ROM through the online Subscription
Store:
http://www.cisco.com/go/subscription
• Nonregistered Cisco.com users can o rd er doc umen tat ion t h rough a loc a l acco unt r ep resen ta tive by
calling Cisco Systems Corpo rate Headqu arter s (Califo rnia, U.S.A. ) at 408 526-7208 or, elsewhere
in North America, by calli ng 800 55 3-NE TS (6387).
xxviii
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Obtaining Technical As sistance
Documentation Feedback
You can submit comm ent s e lec tron ica ll y on C isco. com. I n the Cisc o Do cum e ntat ion ho me p ag e, c li ck
the Fax or Email option in the “Le ave Feedback” sec tion at th e bottom of the page .
You can e-mail your commen ts to bug-doc @cisco.c om.
You can submit your comments by mai l by using the respon se card behind th e front cover of your
document or by wri ting t o the fo llowing a ddress:
Cisco Systems
Attn: Document Resour ce Connec tion
170 West Tasman Drive
San Jose, CA 95134- 988 3
We appreciat e your co mmen ts.
Obtaining Technical Assistanc e
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can
obtain online documentation, troubleshooting tips, and sample configurations from online tools by using
the Cisco T ech nical Assistance Center (TA C) Web Site. Cisco.com re gistered user s hav e complete acces s
to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open
access to Cisco information, networking solutions, service s, pr ogram s, a nd resour ce s at any time , from
anywhere in the wor ld.
Cisco.com is a highly int egrated Interne t applicat ion and a powerf ul, easy- to-use t ool that prov ides a
broad range of f eat ures an d s er vices to hel p you w it h th ese tasks:
• Streamline business processes and improve productivity
• Resolve technical issues with online support
• Download and test softwar e pa ck ag es
• Order Cisco learning materials a nd merc handise
• Register for online skill assessment, training, and certification programs
If you want to obtain customized information and service, you can self-register on Cisco.com. To access
Cisco.com, go to this URL:
http://www.cisco.com
Technical Assistance Center
The Cisco Technical A ssistance Cen ter (TA C) is av ailable to all custo mers who n eed technica l assistance
with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC
Web Site an d th e Ci sco TAC Escalatio n C en te r.
xxix
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Obtaining Technical Assistance
Cisco TAC inquiries are categorized according to the urgency of the i ssue:
• Priority level 4 (P4)—You need information or assis tanc e c once rnin g C isco produ ct ca pabi litie s,
product installation, or basi c product configuration.
• Priority level 3 (P3)—Your network performance is degraded. Network functio nality is no ticeabl y
impaired, but most business operations continue.
• Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects
of business operations. No workar oun d is available.
• Priority level 1 (P1)—Your production network is down, and a critical impact to business operations
will occur if se rv ice is n ot r esto re d qui ck ly. No workaround i s available.
The Cisco TAC resource that you choose is based on th e priorit y of the probl em and th e condit ions of
service cont rac ts , w h en appl ic ab le .
Cisco TAC Web Site
You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and tim e.
The site provides around-the-clock access to online tools, knowledge bases, and software. To access the
Cisco TAC Web Site, go to th is U RL:
http://www.cisco.com/tac
All customers, partners, and resellers who have a valid Cisco service contract have complete access to
the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a
Cisco.com login I D a nd passwor d. If yo u have a valid servi ce con tra ct but do no t have a login ID or
password, go to this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registere d user, and you cannot resol ve your tech ni cal issues by using the Cisco
TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases th rough the Cisco TAC
Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These
classifications are assigned when severe network degradation significantly impacts business operations.
When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer
automatically opens a case.
To obtain a d ire ct ory o f tol l-fr ee C i sco TAC telephone n umb er s for yo ur co untr y, go to this UR L:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support
services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network
Supported Account s (NSA ). W he n you c all t he ce nte r, please have available your serv ice agre eme nt
number and your product seri al number.
xxx
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
78-12647-02
Preface
Obtaining Technical As sistance
Loading...