Cisco Catalyst 4912G Manuals

Manuals and User Guides for Cisco Catalyst 4912G. We have 2 Cisco Catalyst 4912G manuals available for free PDF download: Configuration Manual, Frequently Asked Questions Manual

Cisco Catalyst 4912G Configuration Manual (614 pages)

Catalyst 4500 Series Switch

Brand: Cisco | Category: Switch | Size: 6 MB

Table of Contents
3
Related Documentation
27
Obtaining Documentation
29
- Ordering Documentation
  29
- Documentation Feedback
  30
Obtaining Technical Assistance
30
Obtaining Additional Publications and Information
31
Product Overview
33
Chapter 1 Product Overview

34
- Catalyst 2948G Switch
  35
- Catalyst 2948G-GE-TX Switch
  35
- Catalyst 2980G Switch
  36
- Supervisor Engine Software
  36
CHAPTER 2 Using the Command-Line Interface

37
CHAPTER 3 Configuring the Switch IP Address and Default Gateway

47
CHAPTER 4 Configuring Ethernet and Fast Ethernet Switching

59
Chapter 5 Configuring Gigabit Ethernet Switching

67
CHAPTER 6 Configuring Fast Etherchannel and Gigabit Etherchannel

77
Chapter 7 Configuring Spanning Tree

100
- Understanding How Stps Work
  100
  - Understanding How a Topology Is Created
    100
  - Understanding How a Switch or Port Becomes the Root Switch or Root Port
    101
  - Understanding Bpdus
    102
  - Calculating and Assigning Port Costs
    102
  - Understanding Spanning Tree Port States
    103
    
    Blocking State
    105
    
    Listening State
    105
    
    Learning State
    106
    
    Forwarding State
    107
- Understanding How PVST+ and MISTP Modes Work
  109
  - PVST+ Mode
    110
  - Rapid PVST
    110
  - MISTP Mode
    110
  - MISTP-PVST+ Mode
    111
- Understanding How Bridge Identifiers Work
  111
  - MAC Address Allocation
    111
  - MAC Address Reduction
    111
- Understanding How MST Works
  112
  - Rapid Spanning Tree Protocol
    114
  - MST-To-SST Interoperability
    115
  - Common Spanning Tree
    116
  - MST Instances
    116
  - MST Configuration
    116
  - MST Region
    117
  - Message Age and Hop Count
    119
  - MST-To-PVST+ Interoperability
    119
- Understanding How BPDU Skewing Works
  120
- Using PVST
  120
- Using Rapid PVST
  126
- Using MISTP-PVST+ or MISTP
  128
- Configuring a Root Switch
  137
- Configuring Spanning Tree Timers
  142
- Configuring MST
  144
  - Enabling MST
    144
  - Mapping and Unmapping Vlans to an MST Instance
    152
- Configuring Spanning Tree BPDU Skewing
  155
CHAPTER 8 Configuring Spanning Tree Portfast, BPDU Guard, BPDU Filter, Uplinkfast, Backbonefast, and

159
Loop Guard

159
- Understanding How Portfast Works
  160
- Understanding How Portfast BPDU Guard Works
  160
- Understanding How Portfast BPDU Filtering Works
  160
- Understanding How Uplinkfast Works
  161
- Understanding How Backbonefast Works
  162
- Understanding How Loop Guard Works
  164
- Configuring Portfast
  166
  - Enabling Portfast on an Access Port
    166
  - Enabling Portfast on a Trunk Port
    167
  - Disabling Portfast
    168
  - Resetting Portfast
    169
- Configuring Portfast BPDU Guard
  169
  - Enabling Portfast BPDU Guard
    169
  - Disabling Portfast BPDU Guard
    170
- Configuring Portfast BPDU Filtering
  171
  - Enabling Portfast BPDU Filtering
    171
  - Disabling Portfast BPDU Filtering
    172
- Configuring Uplinkfast
  173
  - Enabling Uplinkfast
    173
  - Disabling Uplinkfast
    174
- Configuring Backbonefast
  175
  - Enabling Backbonefast
    175
  - Displaying Backbonefast Statistics
    175
  - Disabling Backbonefast
    176
- Configuring Loop Guard
  176
  - Enabling Loop Guard
    176
  - Disabling Loop Guard
    177
- Configuring VTP
  179
- Understanding How VTP Version 1 and Version 2 Work
  179
Chapter 9 Configuring VTP

180
- Understanding the VTP Domain
  180
- Understanding VTP Modes
  180
- Understanding VTP Advertisements
  181
- Understanding VTP Version 2
  181
- Understanding VTP Pruning
  182
- Default VTP Version 1 and Version 2 Configuration
  183
- VTP Version 1 and Version 2 Configuration Guidelines
  184
- Configuring VTP Version 1 and Version 2
  185
  - Configuring a VTP Server
    185
  - Configuring a VTP Client
    185
  - Configuring VTP (VTP Transparent Mode)
    186
  - Disabling VTP Using the off Mode
    187
  - Enabling VTP Version 2
    187
  - Disabling VTP Version 2
    188
  - Enabling VTP Pruning
    189
  - Disabling VTP Pruning
    190
  - Displaying VTP Statistics
    190
- Understanding How VTP Version 3 Works
  191
  - VTP Version 3 Authentication
    191
  - VTP Version 3 Per-Port Configuration
    192
  - VTP Version 3 Domains, Modes, and Partitions
    192
  - VTP Version 3 Modes
    196
  - VTP Version 3 Databases
    197
- Default VTP Version 3 Configuration
  200
- Configuring VTP Version 3
  200
- Understanding How Vlans Work
  209
Chapter 10 Configuring VLAN

210
- VLAN Ranges
  211
- Configurable VLAN Parameters
  212
- VLAN Default Configuration
  212
- VLAN Configuration Guidelines
  213
- Configuring Vlans on the Switch
  214
- Configuring Auxiliary Vlans
  221
  - Understanding Auxiliary Vlans
    221
- Configuring Private Vlans
  224
Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports

233
- Understanding How VLAN Trunks Work
  233
  - Trunking Overview
    233
  - Trunking Modes and Encapsulation Types
    234
  - Trunking Support
    235
  - 802.1Q Trunk Restrictions
    236
- Default Trunk Configuration
  237
- Configuring a Trunk Link
  237
  - Configuring an 802.1Q Trunk
    237
  - Defining the Allowed Vlans on a Trunk
    238
  - Disabling a Trunk Port
    239
- Disabling VLAN 1 on a Trunk Link
  240
- Example VLAN Trunk Configurations
  241
Chapter 12 Configuring Dynamic VLAN Membership with VMPS

255
- Understanding How VMPS Works
  255
- VMPS and Dynamic Port Hardware and Software Requirements
  256
- Default VMPS and Dynamic Port Configuration
  256
- Configuration Guidelines for Dynamic Ports and VMPS
  257
- Configuring VMPS
  258
  - Creating the VMPS Database
    258
  - Configuring the VMPS Server
    261
  - Configuring VMPS Clients
    261
  - Monitoring VMPS
    263
  - Maintaining VMPS
    263
  - Configuring Static Ports
    264
- Troubleshooting VMPS and Dynamic Port VLAN Membership
  264
  - Troubleshooting VMPS
    265
  - Troubleshooting Dynamic Ports
    265
- VMPS Example
  265
- Dynamic Port VLAN Membership with Auxiliary Vlans
  268
  - Configuration Guidelines
    268
  - Configuring Dynamic Port VLAN Membership with Auxiliary Vlans
    268
Chapter 13 Configuring GVRP

271
- Understanding How GVRP Works
  271
- GVRP Hardware and Software Requirements
  271
- Default GVRP Configuration
  272
- GVRP Configuration Guidelines
  272
- Configuring GVRP on the Switch
  272
  - Enabling GVRP Globally
    272
  - Enabling GVRP on Individual 802.1Q Trunk Ports
    273
  - Enabling GVRP Dynamic VLAN Creation
    274
  - Configuring GVRP Registration
    274
  - Sending GVRP VLAN Declarations from Blocking Ports
    276
  - Setting the GARP Timers
    276
  - Displaying GVRP Statistics
    277
  - Clearing GVRP Statistics
    278
  - Disabling GVRP on Individual 802.1Q Trunk Ports
    278
  - Disabling GVRP Globally
    278
Chapter 14 Configuring Qo

280
Configuring Qos

280
- Understanding How Qos Works
  280
Chapter 15 Configuring Multicast Services

287
- Understanding How Multicasting Works
  287
- Configuring CGMP
  290
  - CGMP Hardware and Software Requirements
    290
  - Default CGMP Configuration
    290
  - Enabling CGMP
    290
  - Enabling CGMP Leave Processing
    291
  - Enabling CGMP Fast-Leave Processing
    291
  - Displaying Multicast Router Information
    292
  - Displaying Multicast Group Information
    292
  - Displaying CGMP Statistics
    293
  - Disabling CGMP Leave Processing
    294
  - Disabling CGMP Fast-Leave Processing
    294
  - Disabling CGMP
    294
- Configuring GMRP
  295
  - GMRP Software Requirements
    295
  - Default GMRP Configuration
    295
  - Enabling GMRP Globally
    295
  - Enabling GMRP on Individual Switch Ports
    296
  - Disabling GMRP on Individual Switch Ports
    296
  - Enabling GMRP Forward-All Option
    297
  - Disabling GMRP Forward-All Option
    297
  - Configuring GMRP Registration
    298
  - Setting the GARP Timers
    299
  - Displaying GMRP Statistics
    300
  - Clearing GMRP Statistics
    301
  - Disabling GMRP
    301
- Configuring Multicast Router Ports and Group Entries
  301
- Filtering IGMP Traffic
  303
  - Using IGMP Traffic Filtering
    304
  - IGMP Software Requirements
    304
  - Default IGMP Filter Configuration
    304
  - IGMP Multicast Filter Activation
    305
  - Configuring Port IP Multicast Filtering
    306
Chapter 16 Configuring Port Security

311
Chapter 17 Configuring Unicast Flood Blocking

323
Chapter 18 Configuring the IP Permit List

327
Chapter 19 Configuring Protocol Filtering

333
CHAPTER 20 Checking Status and Connectivity 20-1

337
- Checking Module Status
  337
- C H a P T E R 20 Checking Status and Connectivity
  338
- Checking Port Status
  338
- Displaying the Port MAC Address
  340
- Displaying Port Capabilities
  341
- Using Telnet
  342
- Changing the Login Timer
  342
- Using Secure Shell Encryption for Telnet Sessions
  343
- Monitoring User Sessions
  344
- Using Ping
  345
  - Understanding How Ping Works
    345
  - Executing Ping
    346
- Using Layer 2 Traceroute
  347
  - Layer 2 Traceroute Usage Guidelines
    347
  - Identifying a Layer 2 Path
    347
- Using IP Traceroute
  348
  - Understanding How IP Traceroute Works
    348
  - Executing IP Traceroute
    349
Chapter 21 Configuring CDP

351
- Understanding How CDP Works
  351
- Default CDP Configuration
  351
- Configuring CDP on the Switch
  352
Chapter 22 Using Switch Topn Reports

357
- Understanding How Switch Topn Reports Works
  357
- Running and Viewing Switch Topn Reports
  359
Chapter 23 Configuring UDLD

363
- Understanding How UDLD Works
  363
- UDLD Software and Hardware Requirements
  364
- Default UDLD Configuration
  364
- Configuring UDLD on the Switch
  365
  - Enabling UDLD Globally
    365
  - Enabling UDLD on Individual Ports
    366
  - Disabling UDLD on Individual Ports
    366
  - Disabling UDLD Globally
    366
  - Specifying the UDLD Message Interval
    367
  - Enabling UDLD Aggressive Mode
    367
  - Displaying the UDLD Configuration
    368
  - Configuring Snmp
    371
- Snmp Terminology
  371
Chapter 24 Configuring SNMP

372
- SNMP Terminology
  372
- Understanding How SNMP Works
  373
  - Security Models and Levels
    374
  - SNMP Ifindex Persistence Feature
    374
  - Understanding How SNMP Works
    374
- Understanding How Snmpv1 and Snmpv2C Work
  375
  - Snmpv1 and Snmpv2C Default Configuration
    376
- Understanding Snmpv3
  376
  - Benefits of Snmpv3
    376
  - SNMP Entity
    376
- Configuring SNMP from an NMS
  379
- Configuring Snmpv1 and Snmpv2C from the CLI
  380
  - Snmpv1 and Snmpv2C Enhancements in Software Release
    380
  - Setting Multiple Snmp Community Strings
    381
- Configuring Snmpv3 from the CLI
  384
- Using Ciscoworks2000
  387
- Using Ciscoworks2000
  388
Chapter 25 Configuring RMON

389
- Understanding How RMON Works
  389
- Enabling RMON
  390
- Viewing RMON Data
  390
- Supported RMON and RMON2 MIB Objects
  391
Chapter 26 Configuring SPAN and RSPAN

393
- Understanding How SPAN and RSPAN Work
  393
  - SPAN Session
    393
  - Destination Port
    394
  - Source Port
    394
  - Reflector Port
    395
  - Ingress SPAN
    395
  - Egress SPAN
    395
- Vspan
  
  395
  - Configuring SPAN
    396
    
    Understanding How SPAN Works
    396
    
    SPAN Configuration Guidelines
    397
    
    Configuring SPAN
    398
  - SPAN and RSPAN Session Limits
    396
  - SPAN Traffic
    396
  - Trunk VLAN Filtering
    396
  - Configuring RSPAN
    400
    
    RSPAN Software and Hardware Requirements
    400
    
    Understanding How RSPAN Works
    400
    
    RSPAN Configuration Guidelines
    401
    
    Configuring RSPAN
    402
    
    RSPAN Configuration Examples
    406
Chapter 27 Administering the Switch

411
- Setting the System Name and System Prompt
  411
  - Configuring the System Name and Prompt
    412
- Setting the System Contact and Location
  413
- Setting the System Clock
  414
- Creating a Login Banner
  414
  - Configuring a Login Banner
    414
  - Clearing the Login Banner
    415
Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner

415
Chapter 28 Power Management

423
Chapter 29 Configuring Voip

443
- Hardware and Software Requirements
  443
- Overview of IP Phones
  444
- Configuring Voip on a Switch
  445
- Configuring Voip on a Switch
  446
Chapter 30 Configuring Switch Access Using AAA

447
- Understanding How Authentication Works
  447
- Configuring Authentication
  454
- Authentication Example
  485
- Understanding How Authorization Works
  486
  - Authorization Events
    486
  - TACACS+ Primary and Fallback Options
    487
  - TACACS+ Command Authorization
    487
  - RADIUS Authorization
    488
- Configuring Authorization
  488
- Authorization Example
  492
- Understanding How Accounting Works
  493
  - Accounting Overview
    493
  - Accounting Events
    493
  - Specifying When to Create Accounting Records
    494
  - Specifying RADIUS Servers
    494
  - Updating the Server
    495
  - Suppressing Accounting
    495
- Configuring Accounting
  495
  - Accounting Default Configuration
    495
  - Accounting Configuration Guidelines
    496
  - Configuring Accounting
    496
- Accounting Example
  499
Chapter 31 Configuring 802.1X Authentication

501
Chapter 32 Modifying the Switch Boot Configuration

521
Chapter 33 Working with System Software Images

529
Chapter 34 Working with the Flash File System

543
- Working with the Flash File System on the Switch
  543
  - Setting the Default Flash Device
    543
  - Setting the Text File Configuration Mode
    544
  - Listing the Files on a Flash Device
    544
  - Displaying the Contents of a File on a Flash Device
    545
  - Copying Files
    546
  - Deleting Files
    547
  - Restoring Deleted Files
    548
  - Verifying a File Checksum
    549
Chapter 35 Working with Configuration Files

551
Chapter 36 Configuring Switch Acceleration

559
Chapter 37 Configuring System Message Logging

563
Chapter 38 Configuring DNS

573
- Understanding How DNS Works
  573
- Default DNS Configuration
  574
- Configuring DNS on the Switch
  574
  - Setting up and Enabling DNS
    574
  - Clearing a DNS Server
    575
  - Clearing the DNS Domain Name
    575
  - Disabling DNS
    575
Chapter 39 Configuring NTP

577
- Understanding How NTP Works
  577
- Default NTP Configuration
  578
- Configuring NTP on the Switch
  578
- Clearing the Time Zone
  583
- Clearing NTP Servers
  583
- Disabling NTP
  584
Appendix

585
Appendix A Acronym

586
I N D E X

595

Cisco Catalyst 4912G Frequently Asked Questions Manual (7 pages)

Quality of Service (QoS) feature

Brand: Cisco | Category: Switch | Size: 0 MB

Introduction
1
Which Qos Features Do Catalyst 4500/4000 Switches that Run Catos Support?
1
Minimum Software Required for Qos on Catalyst 4500/4000 Switches
2
Support for Rate-Limiting or Policing on Ports or Vlans
2
Marking or Rewriting IP Precedence Tos Bits in an IP Packet
2
Input Scheduling Provided by Catalyst 4500/4000 Switches
2
Changing Incoming Class of Service (Cos) Value in IEEE 802.1Q Tags
2
Tagging Traffic from Servers with Specific Cos Values
3
Honoring Incoming Cos Value in IEEE 802.1Q Tags from IP Phones
3
Extending Trust or Overriding Cos Values from Devices Connected to IP Phones
3
Output Scheduling Provided by Catalyst 4500/4000 Switches
3
Qos Enabled on Catalyst 4500/4000 Switch Causes Performance Issues
3
Comparison of Qos Features on Catalyst 4500/4000 Switches with Cisco IOS and L3 Module
4
Related Information
6
Netpro Discussion Forums − Featured Conversations
6

Cisco Categories

Switch

Network Router IP Phone Wireless Access Point Network Hardware

More Cisco Manuals

Cisco Catalyst 4912G Manuals

Cisco Catalyst 4912G Configuration Manual (614 pages)

Table of Contents

Chapter 1 Product Overview

CHAPTER 2 Using the Command-Line Interface

CHAPTER 3 Configuring the Switch IP Address and Default Gateway

CHAPTER 4 Configuring Ethernet and Fast Ethernet Switching

Chapter 5 Configuring Gigabit Ethernet Switching

CHAPTER 6 Configuring Fast Etherchannel and Gigabit Etherchannel

Chapter 7 Configuring Spanning Tree

CHAPTER 8 Configuring Spanning Tree Portfast, BPDU Guard, BPDU Filter, Uplinkfast, Backbonefast, and

Loop Guard

Chapter 9 Configuring VTP

Chapter 10 Configuring VLAN

Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports

Chapter 12 Configuring Dynamic VLAN Membership with VMPS

Chapter 13 Configuring GVRP

Chapter 14 Configuring Qo

Configuring Qos

Chapter 15 Configuring Multicast Services

Chapter 16 Configuring Port Security

Chapter 17 Configuring Unicast Flood Blocking

Chapter 18 Configuring the IP Permit List

Chapter 19 Configuring Protocol Filtering

CHAPTER 20 Checking Status and Connectivity 20-1

Chapter 21 Configuring CDP

Chapter 22 Using Switch Topn Reports

Chapter 23 Configuring UDLD

Chapter 24 Configuring SNMP

Chapter 25 Configuring RMON

Chapter 26 Configuring SPAN and RSPAN

Vspan

Chapter 27 Administering the Switch

Enabling or Disabling the "Cisco Systems Console" Telnet Login Banner

Chapter 28 Power Management

Chapter 29 Configuring Voip

Chapter 30 Configuring Switch Access Using AAA

Chapter 31 Configuring 802.1X Authentication

Chapter 32 Modifying the Switch Boot Configuration

Chapter 33 Working with System Software Images

Chapter 34 Working with the Flash File System

Chapter 35 Working with Configuration Files

Chapter 36 Configuring Switch Acceleration

Chapter 37 Configuring System Message Logging

Chapter 38 Configuring DNS

Chapter 39 Configuring NTP

Appendix

Appendix A Acronym

I N D E X

Cisco Catalyst 4912G Frequently Asked Questions Manual (7 pages)

Table of Contents

Related Products

Cisco Categories