Name: Cisco 2950 - Catalyst Switch
Brand: Cisco
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27-13

Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

78-11380-10

Chapter 27 Configuring System Message Logging

Displaying the Logging Configuration

To display the logging configuration and the contents of the log buffer, use the show logging privileged

EXEC command. For information about the fields in this display, refer to the Cisco IOS Configuration

Fundamentals Command Reference for Cisco IOS Release 12.1.

Default Chapter3
- Table of Contents3
- Obtaining Documentation31
  - Ordering Documentation32
- Related Publications31
- Documentation Feedback32
- Obtaining Technical Assistance32
  - Submitting a Service Request33
  - Definitions of Service Request Severity33
- Obtaining Additional Publications and Information34
- Features35
Chapter 1 Overview36
Chapter 2 Using the Command-Line Interface42
- Management Options42
  - Management Interface Options42
  - Advantages of Using CMS and Clustering Switches43
- Network Configuration Examples44
- Cisco IOS Command Modes57
- Getting Help59
- Abbreviating Commands60
- Using no and Default Forms of Commands60
- Understanding CLI Messages61
- Using Command History61
- Using Editing Features62
- Searching and Filtering Output of Show and more Commands65
- Accessing the CLI65
- Accessing the CLI from a Browser66
CHAPTER 3 Configuring Catalyst 2955 Switch Alarms67
- Understanding Catalyst 2955 Switch Alarms67
- Configuring Catalyst 2955 Switch Alarms69
- Displaying Catalyst 2955 Switch Alarms Status77
Chapter 4 Getting Started with CMS79
- Understanding CMS79
- Configuring CMS85
- Displaying CMS88
- Where to Go Next93
Chapter 5 Assigning the Switch IP Address and Default Gateway95
- Understanding the Boot Process95
- Assigning Switch Information96
- Checking and Saving the Running Configuration105
- Modifying the Startup Configuration105
- Scheduling a Reload of the Software Image110
  - Configuring a Scheduled Reload110
  - Displaying Scheduled Reload Information111
Chapter 6 Configuring IE2100 CNS Agents113
- Understanding IE2100 Series Configuration Registrar Software113
- Understanding CNS Embedded Agents117
- Configuring CNS Embedded Agents118
- Displaying CNS Configuration125
Chapter 7 Clustering Switches127
- Understanding Switch Clusters128
- Planning a Switch Cluster131
- Creating a Switch Cluster144
- Using the CLI to Manage Switch Clusters149
  - Catalyst 1900 and Catalyst 2820 CLI Considerations150
- Using SNMP to Manage Switch Clusters150
- Managing the System Time and Date153
Chapter 8 Administering the Switch154
- Understanding Network Time Protocol154
- Configuring NTP155
- Configuring Time and Date Manually163
- Configuring a System Name and Prompt168
- Creating a Banner171
- Managing the MAC Address Table173
- Managing the ARP Table180
Configuring Switch-Based Authentication181
- Preventing Unauthorized Access to Your Switch181
- C H a P T E R 9 Configuring Switch-Based Authentication182
- Protecting Access to Privileged EXEC Commands182
- Controlling Switch Access with TACACS190
- Controlling Switch Access with RADIUS198
- Configuring the Switch for Local Authentication and Authorization212
- Configuring the Switch for Secure Shell213
CHAPTER 10 Configuring 802.1X Port-Based Authentication220
- Understanding 802.1X Port-Based Authentication220
- Configuring 802.1X Authentication227
- Displaying 802.1X Statistics and Status239
Chapter 11 Configuring Interface Characteristics241
- Understanding Interface Types241
- Using the Interface Command244
- Configuring Ethernet Interfaces248
- Monitoring and Maintaining the Interfaces255
Chapter 12 Configuring Smartports Macros259
- Understanding Smartports Macros259
- Configuring Smartports Macros260
- Displaying Smartports Macros266
- Configuring LRE267
- Understanding LRE Features267
  - Ports on the Catalyst 2950 LRE Switches267
Chapter 13 Configuring LRE268
- LRE Links and LRE Profiles268
- LRE Link Monitor273
- LRE Message Logging Process274
- Configuring LRE Ports274
- Upgrading LRE Switch Firmware289
- Displaying LRE Status293
- Configuring STP295
- Understanding Spanning-Tree Features295
Chapter 14 Configuring STP296
- STP Overview296
- Spanning-Tree Topology and Bpdus297
- Bridge ID, Switch Priority, and Extended System ID298
- Spanning-Tree Interface States298
- How a Switch or Port Becomes the Root Switch or Root Port301
- Spanning Tree and Redundant Connectivity302
- Spanning-Tree Address Management302
- Accelerated Aging to Retain Connectivity302
- Spanning-Tree Modes and Protocols303
- Supported Spanning-Tree Instances303
- Spanning-Tree Interoperability and Backward Compatibility304
- STP and IEEE 802.1Q Trunks304
- Configuring Spanning-Tree Features305
- Displaying the Spanning-Tree Status318
Chapter 15 Configuring MSTP319
- Understanding MSTP320
- Understanding RSTP324
- Configuring MSTP Features329
- Displaying the MST Configuration and Status341
CHAPTER 16 Configuring Optional Spanning-Tree Features343
- Understanding Optional Spanning-Tree Features343
- Configuring Optional Spanning-Tree Features354
- Displaying the Spanning-Tree Status362
- Understanding Vlans363
Chapter 17 Configuring VLAN364
- Supported Vlans364
- VLAN Port Membership Modes365
- Configuring Normal-Range Vlans366
- Configuring Extended-Range Vlans374
- Displaying Vlans376
- Configuring VLAN Trunks377
- Configuring VMPS387
- Configuring VTP395
- Understanding VTP395
Chapter 18 Configuring VTP396
- The VTP Domain396
- VTP Modes397
- VTP Advertisements397
- VTP Version 2398
- VTP Pruning398
- Configuring VTP398
- Monitoring VTP410
Chapter 19 Configuring Voice VLAN411
- Understanding Voice VLAN411
- Configuring Voice VLAN412
- Displaying Voice VLAN416
Configuring Dhcp Features417
- Understanding DHCP Features417
Chapter 20 Configuring DHCP Feature418
- Option-82 Data Insertion419
- Configuring DHCP Features421
- Displaying DHCP Information424
  - Displaying a Binding Table424
  - Displaying the DHCP Snooping Configuration424
- Understanding IGMP Snooping425
Chapter 21 Configuring IGMP Snooping and MVR426
- IGMP Versions426
- Joining a Multicast Group427
- Leaving a Multicast Group428
- Immediate-Leave Processing429
- IGMP Report Suppression429
- Source-Only Networks429
- Configuring IGMP Snooping430
- Displaying IGMP Snooping Information437
- Understanding Multicast VLAN Registration438
  - Using MVR in a Multicast Television Application439
- Configuring MVR441
- Displaying MVR Information445
- Configuring IGMP Filtering and Throttling445
- Displaying IGMP Filtering and Throttling Configuration451
CHAPTER 22 Configuring Port-Based Traffic Control453
- Configuring Storm Control453
- Configuring Protected Ports456
- Configuring Port Blocking457
  - Blocking Flooded Traffic on an Interface457
  - Resuming Normal Forwarding on a Port458
- Configuring Port Security459
- Displaying Port-Based Traffic Control Settings465
Chapter 23 Configuring UDLD467
- Understanding UDLD467
  - Modes of Operation467
  - Methods to Detect Unidirectional Links468
- Configuring UDLD470
- Displaying UDLD Status473
Chapter 24 Configuring CDP475
- Understanding CDP475
- Configuring CDP476
- Monitoring and Maintaining CDP479
Chapter 25 Configuring SPAN and RSPAN481
- Understanding SPAN and RSPAN481
- Configuring SPAN487
- Configuring RSPAN492
- Displaying SPAN and RSPAN Status497
Chapter 26 Configuring RMON499
- Understanding RMON499
- Configuring RMON500
- Displaying RMON Status504
Chapter 27 Configuring System Message Logging505
- Understanding System Message Logging505
- Configuring System Message Logging506
- Displaying the Logging Configuration517
Chapter 28 Configuring SNMP519
- Understanding SNMP519
- Configuring SNMP523
- Displaying SNMP Status534
Chapter 29 Configuring Network Security with Acls535
- Understanding Acls536
- Configuring Acls540
- Applying Acls to Terminal Lines or Physical Interfaces553
  - Applying Acls to a Terminal Line554
  - Applying Acls to a Physical Interface554
- Displaying ACL Information555
  - Displaying Acls555
  - Displaying Access Groups556
- Examples for Compiling Acls557
Configuring Qos561
Chapter 30 Configuring Qo562
- Understanding Qos562
- Configuring Auto-Qos569
- Displaying Auto-Qos Information575
- Auto-Qos Configuration Example576
- Configuring Standard Qos578
- Displaying Standard Qos Information599
- Standard Qos Configuration Examples599
  - Qos Configuration for the Existing Wiring Closet600
  - Qos Configuration for the Intelligent Wiring Closet601
Chapter 31 Configuring Etherchannels603
- Understanding Etherchannels603
- Configuring Etherchannels609
- Displaying Etherchannel, Pagp, and LACP Status616
Chapter 32 Troubleshooting617
- Using Recovery Procedures617
- Preventing Autonegotiation Mismatches630
- GBIC and SFP Module Security and Identification630
- Diagnosing Connectivity Problems631
  - Using Ping631
    - Understanding Ping631
    - Executing Ping631
  - Using Layer 2 Traceroute632
- Diagnosing LRE Connection Problems634
- Using Debug Commands635
- Using the Show Controllers Commands638
- Using the Crashinfo File639
Appendix641
Supported Mibs641
- MIB List641
Appendix A Supported MIB642
- MIB List642
- Using FTP to Access the MIB Files643
Appendix645
Working with the Cisco IOS File System, Configuration Files, and Software Images645
- Working with the Flash File System645
- Working with Configuration Files652
- Working with Software Images663
I N D E X677

Cisco 2950 - Catalyst Switch User Manual

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Cisco 2950 - Catalyst Switch Specifications

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Brand	Cisco
Model	2950 - Catalyst Switch
Category	Switch
Language	English