Catalyst 2960 Switch Software Configuration Guide

1 Corporate HeadquartersCisco Systems, West Tasman DriveSan Jose, CA 95134-1706 : 408 526-4000800 553-NETS (6387)Fax: 408 526-4100 Catalyst 2960 Switch Software Configuration GuideCisco IOS Release (25)SEEF ebruary 2006 Text Part Number: OL-8603-01 THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.

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6 Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and 2960 Switch Software Configuration Guide 2006 Cisco Systems, Inc. All rights reserved. iiiCatalyst 2960 Switch Software Configuration GuideOL-8603-01 CONTENTSP refacexliiiAudiencexliiiPurposexliiiConv entionsxlivRelated PublicationsxlivObtaining Documentation DVDxlviOrdering DocumentationxlviDocumentation FeedbackxlviCisco Product Security OverviewxlviReporting Security Problems in Cisco ProductsxlviiObtaining Technical AssistancexlviiCisco Technical Support & Documentation WebsitexlviiiSubmitting a Service RequestxlviiiDefinitions of Service Request SeverityxlviiiObtaining Additional

7 Publications and InformationxlixlCHAPTER 1 Overview1-1 Features1-1 Ease-of-Deployment and Ease-of-Use Features1-1 Performance Features1-2 Management Options1-4 Manageability Features1-4 Availability and Redundancy Features1-5 VLAN Features1-7 Security Features1-7 QoS and CoS Features1-8 Monitoring Features1-9 Default Settings After Initial Switch Configuration1-10 ContentsivCatalyst 2960 Switch Software Configuration GuideOL-8603-01 Network Configuration Examples1-12 Design Concepts for Using the Switch1-12 Small to Medium-Sized Network Using Catalyst 2960 Switches1-16 Long-Distance.

8 High-Bandwidth Transport Configuration1-17 Where to Go Next1-18 CHAPTER 2 Using the Command-Line Interface2-1 Understanding Command Modes2-1 Understanding the Help System2-3 Understanding Abbreviated Commands2-4 Understanding no and default Forms of Commands2-4 Understanding CLI Error Messages2-5 Using Configuration Logging2-5 Using Command History2-6 Changing the Command History Buffer Size2-6 Recalling Commands2-6 Disabling the Command History Feature2-7 Using Editing Features2-7 Enabling and Disabling Editing Features2-7 Editing Commands through Keystrokes2-7 Editing Command Lines that Wrap2-9 Searching and Filtering Output of show and more Commands2-10 Accessing the CLI2-10 Accessing the CLI through a Console Connection or through Telnet2-10 CHAPTER 3 Assigning the Switch IP Address and Default Gateway3-1 Understanding the Boot Process3-1 Assigning Switch Information3-2 Default Switch Information3-3 Understanding DHCP-Based Autoconfiguration3-3 DHCP Client Request Process3-4 Configuring DHCP-Based

9 Autoconfiguration3-5 DHCP Server Configuration Guidelines3-5 Configuring the TFTP Server3-5 Configuring the DNS3-6 Configuring the Relay Device3-6 ContentsvCatalyst 2960 Switch Software Configuration GuideOL-8603-01 Obtaining Configuration Files3-7 Example Configuration3-8 Manually Assigning IP Information3-9 Checking and Saving the Running Configuration3-10 Modifying the Startup Configuration3-11 Default Boot Configuration3-12 Automatically Downloading a Configuration File3-12 Specifying the Filename to Read and Write the System Configuration3-12 Booting Manually3-13 Booting a Specific Software Image3-13 Controlling Environment Variables3-14 Scheduling a Reload of the Software Image3-15 Configuring a Scheduled Reload3-16 Displaying Scheduled Reload Information3-17 CHAPTER 4 Configuring Cisco IOS CNS Agents4-1 Understanding Cisco Configuration Engine Software4-1 Configuration Service4-2 Event Service4-3 NameSpace Mapper4-3 What You Should Know About the CNS IDs and Device Hostnames4-3 ConfigID4-3 DeviceID4-4

10 Hostname and DeviceID4-4 Using Hostname, DeviceID, and ConfigID4-4 Understanding Cisco IOS Agents4-5 Initial Configuration4-5 Incremental (Partial) Configuration4-6 Synchronized Configuration4-6 Configuring Cisco IOS Agents4-6 Enabling Automated CNS Configuration4-6 Enabling the CNS Event Agent4-8 Enabling the Cisco IOS CNS Agent4-9 Enabling an Initial Configuration4-9 Enabling a Partial Configuration4-11 Displaying CNS Configuration4-12 ContentsviCatalyst 2960 Switch Software Configuration GuideOL-8603-01 CHAPTER 5 Clustering Switches5-1 Understanding Switch Clusters5-1 Cluster Command Switch Characteristics5-3 Standby Cluster Command Switch