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Catalyst 4912G
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: 6.36 MB
Table of Contents
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
Switch CLI Overview
37
C H a P T E R 2 Using the Command-Line Interface
38
Accessing the Switch CLI
38
Accessing the CLI through the Console Port
38
Accessing the CLI through Telnet
39
Switch CLI Command Modes
39
Accessing Help
40
Command-Line Editing
41
History Substitution
42
Abbreviating a Command
42
Completing a Partial Command
42
Scrolling through Command Output
42
Using Command Aliases
43
Specifying Modules, Ports, and Vlans
43
Specifying MAC Addresses
44
Specifying IP Addresses, Host Names, and IP Aliases
44
ROM Monitor CLI
45
Example of a Catalyst 4003 Bootup Display
45
CHAPTER 3 Configuring the Switch IP Address and Default Gateway
47
Understanding How the Switch Management Interfaces Work
47
C H a P T E R 3 Configuring the Switch IP Address and Default Gateway
48
Understanding How Automatic IP Configuration Works
48
Automatic IP Configuration Overview
48
Understanding DHCP
49
Understanding RARP
50
Preparing to Configure the IP Address and Default Gateway
50
Default IP Address and Default Gateway Configuration
51
Setting the In-Band (Sc0) Interface IP Address
51
Setting the Management Ethernet (Me1) Interface IP Address
52
Configuring Default Gateways
53
Configuring the SLIP (Sl0) Interface on the Console Port
54
Using DHCP or RARP to Obtain an IP Address Configuration
56
Renewing and Releasing a DHCP-Assigned IP Address
57
CHAPTER 4 Configuring Ethernet and Fast Ethernet Switching
59
Understanding How Ethernet Works
59
Ethernet Overview
59
C H a P T E R 4 Configuring Ethernet and Fast Ethernet Switching
60
Switching Frames between Segments
60
Building the Address Table
60
Default Ethernet and Fast Ethernet Configurations
60
Configuring Ethernet and Fast Ethernet Ports
61
Setting Ethernet and Fast Ethernet Port Names
61
Setting Ethernet and Fast Ethernet Port Priority Levels
62
Setting Ethernet and Fast Ethernet Port Speeds
62
Setting Ethernet and Fast Ethernet Port Duplex Modes
63
Setting Ethernet and Fast Ethernet Port Debounce Timers
64
Configuring Errdisable State Ethernet and Fast Ethernet Port Timeout Periods
65
Checking Ethernet and Fast Ethernet Port Connectivity
66
Chapter 5 Configuring Gigabit Ethernet Switching
67
Understanding How Gigabit Ethernet Works
67
Understanding How Gigabit Ethernet Flow Control Works
67
Understanding How Port Negotiation Works
69
Understanding How Oversubscribed Gigabit Ethernet Works
70
Default Gigabit Ethernet Configuration
72
Configuring Gigabit Ethernet Ports
73
Assigning Gigabit Ethernet Port Names
73
Configuring Gigabit Ethernet Port Priority Levels
74
Configuring Flow Control on Gigabit Ethernet Ports
74
Enabling Port Negotiation on Gigabit Ethernet Ports
75
Disabling Port Negotiation
75
Configuring Errdisable State Gigabit Ethernet Port Timeout Periods
75
Checking Gigabit Ethernet Port Connectivity
76
CHAPTER 6 Configuring Fast Etherchannel and Gigabit Etherchannel
77
Understanding How Etherchannel Works
77
C H a P T E R 6 Configuring Fast Etherchannel and Gigabit Etherchannel
78
Etherchannel Overview
78
Hardware Support for Etherchannel
78
Understanding Frame Distribution
78
Pagp and LACP
78
Etherchannel Configuration Guidelines and Restrictions
79
Guidelines for Configuring a Port
79
Guidelines for Configuring Vlans and Trunks
80
Etherchannel Interaction with Other Features
80
Understanding Pagp
81
Pagp Modes
81
Understanding Administrative Groups and Etherchannel Ids
82
Configuring Etherchannel Using Pagp
82
Creating an Etherchannel
83
Defining an Etherchannel Administrative Group
83
Setting the Etherchannel Spanning Tree Port Cost
84
Setting the Etherchannel Spanning Tree Port VLAN Cost
85
Removing an Etherchannel Bundle
85
Displaying Etherchannel Configuration Information
86
Displaying Etherchannel Traffic Statistics
87
Displaying Etherchannel Pagp Statistics
88
Etherchannel Configuration Examples
88
Configuration Example of a Four-Port Fast Etherchannel
88
Configuration Example of a Two-Port Gigabit Etherchannel
90
Understanding LACP
92
LACP Modes
92
LACP Parameters
93
Configuring Etherchannel Using LACP
94
Specifying the Etherchannel Protocol
94
Specifying the System Priority
95
Specifying the Port Priority
95
Specifying an Administrative Key Value
95
Changing the Channel Mode
96
Specifying the Channel Path Cost
97
Specifying the Channel VLAN Cost
97
Clearing LACP Statistics
97
Displaying Etherchannel Traffic Utilization
97
Disabling an Etherchannel
98
Displaying Spanning Tree-Related Information for Etherchannels
98
Configuring Spanning Tree
99
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
Default PVST+ Configuration
120
Setting the PVST+ Bridge ID Priority
121
Configuring the PVST+ Port Cost
123
Configuring PVST+ Port Priority
123
Configuring the PVST+ Default Port Cost Mode
124
Configuring the PVST+ Port VLAN Cost
124
Configuring the PVST+ Port VLAN Priority
125
Disabling the PVST+ Mode on a VLAN
126
Using Rapid PVST
126
Using MISTP-PVST+ or MISTP
128
Default MISTP Mode Configuration
128
Setting the MISTP-PVST+ Mode or MISTP Mode
129
Configuring the MISTP Bridge ID Priority
130
Enabling an MISTP Instance
134
Mapping Vlans to an MISTP Instance
134
Disabling MISTP-PVST+ or MISTP
137
Configuring a Root Switch
137
Configuring a Primary Root Switch
137
Configuring a Secondary Root Switch
138
Configuring a Root Switch to Improve Convergence
139
Using Root Guard-Preventing Switches from Becoming Root
141
Displaying Spanning Tree BPDU Statistics
141
Configuring Spanning Tree Timers
142
Configuring the Hello Time
142
Configuring the Forward Delay Time
143
Configuring the Maximum Aging Time
143
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
Changing VTP Version 3 Modes
201
Configuring VTP Version 3 Passwords
205
Configuring a VTP Version 3 Takeover
206
Disabling VTP Version 3 on a Per-Port Basis
207
VTP Version 3 Show Commands
208
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
Creating or Modifying an Ethernet VLAN
214
Creating or Modifying a Normal-Range Ethernet VLAN
215
Creating or Modifying an Extended-Range VLAN
217
Assigning Switch Ports to a VLAN
218
Mapping 802.1Q Vlans to ISL Vlans
219
Clearing 802.1Q-To-ISL VLAN Mappings
220
Deleting a VLAN
220
Configuring Auxiliary Vlans
221
Understanding Auxiliary Vlans
221
Configuring Private Vlans
224
Private VLAN Configuration Guidelines
225
Creating a Private VLAN
227
Viewing the Port Capability of a Private VLAN Port
230
Deleting a Private VLAN
230
Deleting an Isolated or Community VLAN
231
Deleting a Private VLAN Mapping
231
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
802.1Q Trunk over a Gigabit Etherchannel Link Example
241
Load-Sharing VLAN Traffic over Parallel Trunks Example
245
802.1Q Nonegotiate Trunk Configuration Example
251
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
Understanding Qos Terminology
280
Understanding Classification and Marking at the Ingress Port
281
Understanding Scheduling
281
Software Requirements
282
Qos Default Configuration
282
Configuring Qos on the Switch
282
Enabling Qos Globally
283
Configuring the Default Cos Value for the Switch
283
Reverting to the Default Switch Cos Value
283
Mapping Cos Values to Transmit Queues and Drop Thresholds
284
Reverting to the Default Cos-To-Transmit Queue and Drop Threshold Mapping
284
Displaying Qos Information
285
Reverting to Qos Defaults
285
Disabling Qos
285
Configuring Qos
280
Understanding How Qos Works
280
Chapter 15 Configuring Multicast Services
287
Understanding How Multicasting Works
287
Understanding Multicasting and Multicast Services Operation
287
Joining a Multicast Group
288
Leaving a Multicast Group
288
Understanding GMRP Operation
289
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
Specifying Multicast Router Ports
302
Configuring Multicast Groups
302
Disabling Multicast Router Ports
303
Disabling Multicast Group Entries
303
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
Understanding How Port Security Works
311
Allowing Traffic Based on the Host MAC Address
311
Restricting Traffic Based on the Host MAC Address
312
Blocking Unicast Flood Packets on Secure Ports
313
Port Security Configuration Guidelines
313
Configuring Port Security on the Switch
313
Setting the Maximum Number of Secure MAC Addresses
314
Setting the Port Security Age Time
315
Clearing MAC Addresses
315
Configuring Unicast Flood Blocking on Secure Ports
316
Enabling MAC Address Notification
317
Setting the Security Violation Action
318
Setting the Shutdown Time
319
Disabling Port Security
319
Restricting Traffic for a Host MAC Address
320
Monitoring Port Security
320
Chapter 17 Configuring Unicast Flood Blocking
323
Understanding How Unicast Flood Blocking Works
323
Configuration Guidelines for Unicast Flood Blocking
324
Configuring Unicast Flood Blocking on the Switch
324
Enabling Unicast Flood Blocking
324
Disabling Unicast Flood Blocking
325
Displaying Unicast Flood Blocking
325
Chapter 18 Configuring the IP Permit List
327
Understanding How the IP Permit List Works
327
IP Permit List Default Configuration
328
Configuring the IP Permit List on the Switch
328
Adding IP Addresses to the IP Permit List
328
Enabling the IP Permit List
329
Disabling the IP Permit List
330
Clearing an IP Permit List Entry
330
Chapter 19 Configuring Protocol Filtering
333
Understanding How Protocol Filtering Works
333
Default Protocol Filtering Configuration
334
Configuring Protocol Filtering on the Switch
334
Configuring Protocol Filtering
334
Disabling Protocol Filtering
335
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
Setting the CDP Global Enable State
352
Setting the CDP Enable State on a Port
352
Setting the CDP Message Interval
354
Setting the CDP Holdtime
354
Displaying CDP Neighbor Information
355
Chapter 22 Using Switch Topn Reports
357
Understanding How Switch Topn Reports Works
357
Running Switch Topn Reports with the Background Keyword
358
Running Switch Topn Reports Without the Background Keyword
358
Understanding How Switch Topn Reports Works
358
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
Defining and Using Command Aliases
416
Defining and Using IP Aliases
417
Configuring Permanent and Static ARP Entries
418
Configuring Static Routes
419
Scheduling a System Reset
420
Scheduling a Reset at a Specific Time
420
Scheduling a Reset Within a Specified Amount of Time
421
Generating System Status Reports for Tech Support
422
Chapter 28 Power Management
423
Understanding How Power Management Works on the Catalyst 4500 Series Switches
423
Power Management Overview
424
Understanding Power Management Modes
424
Available Power for Power Supplies
426
Power Management Limitations
426
1400 W DC Power Supply Guidelines and Restrictions
427
Understanding How Power Management Works on the Catalyst 4006 Switch
428
Understanding Power Redundancy
428
1+1 Redundancy Mode Guidelines and Restrictions
429
1+1 Redundancy Mode Limitations
429
Power Consumption for Modules
431
Migrating a Supervisor Engine II from a Catalyst 4006 Switch to a Catalyst 4500 Series Switch
432
Understanding How Poe Works
433
Poe Management Modes
434
Power Requirements
434
Phone Detection Summary
436
Configuring Power Management
436
Setting Redundant Mode for the Catalyst 4500 Series Switches
436
Setting Combined Mode on the Catalyst 4500 Series Switches
437
Setting the DC Power Input
438
Setting the Power Budget for the Catalyst 4006 Switch
438
Displaying System Information
439
Configuring Poe
440
Migrating a Supervisor Engine II from a Catalyst 4006 Switch to a Catalyst 4500 Series Switch
440
Setting the Power Mode of a Port or Group of Ports
440
Setting the Default Power Allocation for a Port
441
Displaying the Power Status for Modules and Individual Ports
441
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
Understanding How Login Authentication Works
448
Understanding How Local Authentication Works
448
Understanding How Local User Authentication Works
449
Understanding How TACACS+ Authentication Works
449
Understanding How RADIUS Authentication Works
450
Understanding How Kerberos Authentication Works
451
Configuring Authentication
454
Authentication Default Configuration
454
Authentication Configuration Guidelines
455
Configuring Login Authentication
455
Configuring Local Authentication
458
Recovering a Lost Password
460
Configuring Local User Authentication
461
Configuring TACACS+ Authentication
463
Configuring RADIUS Authentication
469
Configuring Kerberos Authentication
476
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 Default Configuration
488
TACACS+ Authorization Configuration Guidelines
488
Configuring TACACS+ Authorization
489
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
Understanding How 802.1X Authentication Works
501
Device Roles
502
Authentication Initiation and Message Exchange
503
Ports in Authorized and Unauthorized States
504
Authentication Server
505
802.1X Parameters Configurable on the Switch
506
802.1X VLAN Assignment Using a RADIUS Server
506
Using 802.1X Authentication with Port Security
507
Using 802.1X Authentication on Ports Configured for Auxiliary VLAN Traffic
508
Using 802.1X Authentication for Guest Vlans
508
Authentication Default Configuration
509
Authentication Configuration Guidelines
509
Configuring 802.1X Authentication on the Switch
510
Enabling 802.1X Globally
510
Disabling 802.1X Globally
510
Enabling and Initializing 802.1X Authentication for Individual Ports
510
Enabling Multiple 802.1X Authentications
511
Setting and Enabling Automatic Reauthentication of the Host
512
Manually Reauthenticating the Host
513
Enabling Multiple Hosts
513
Disabling Multiple Hosts
514
Setting the Quiet Period
514
Setting the Authenticator-To-Host Retransmission Time for EAP-Request/Identity Frames
514
Setting the Supplicant-To-Host Retransmission Time for EAP-Request Frames
515
Layer Packets
515
Setting the Back-End Authenticator-To-Host Frame-Retransmission Number
516
Setting the Shutdown Timeout Period
516
Setting the Back-End Authenticator-To-Host Frame-Retransmission Number
517
Resetting the 802.1X Configuration Parameters to the Default Values
517
Setting the Trace Severity
518
Using the Show Commands
518
Chapter 32 Modifying the Switch Boot Configuration
521
Understanding How the Switch Boot Configuration Works
521
Understanding the Boot Process
521
Understanding the ROM Monitor
522
Understanding the Configuration Register
522
Understanding the BOOT Environment Variable
523
Understanding the CONFIG_FILE Environment Variable
523
Default Switch Boot Configuration
524
Setting the Configuration Register
524
Setting the Boot Field in the Configuration Register
524
Setting CONFIG_FILE Recurrence
525
Setting the Switch to Ignore the NVRAM Configuration
526
Setting the BOOT Environment Variable
526
Clearing the BOOT Environment Variable Settings
527
Setting and Clearing the CONFIG_FILE Environment Variable
527
Setting the CONFIG_FILE Environment Variable
527
Clearing CONFIG_FILE Environment Variable Entries
528
Displaying the Switch Boot Configuration
528
Chapter 33 Working with System Software Images
529
Software Image Naming Conventions
529
Downloading System Software Images to the Switch Using TFTP
529
Understanding How TFTP Software Image Downloads Work
530
Preparing to Download an Image Using TFTP
530
Downloading Supervisor Engine Images Using TFTP
530
Sample TFTP Download Procedures
531
Uploading System Software Images to a TFTP Server
532
Preparing to Upload an Image to a TFTP Server
533
Uploading Software Images to a TFTP Server
533
Downloading System Software Images to the Switch Using Rcp
533
Understanding How Rcp Software Image Downloads Work
534
Preparing to Download an Image Using Rcp
534
Downloading Supervisor Engine Images Using Rcp
534
Sample Rcp Download Procedures
535
Uploading System Software Images to an Rcp Server
536
Preparing to Upload an Image to an Rcp Server
537
Uploading Software Images to an Rcp Server
537
Upgrading the ROM Monitor
537
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
Creating and Using Configuration Files Guidelines
551
Creating a Configuration File
552
Configuring the Switch Using a File in Flash Memory
552
Copying Configuration Files Using TFTP
553
Downloading Configuration Files from a TFTP Server
553
Uploading Configuration Files to a TFTP Server
554
Copying Configuration Files Using Rcp
555
Downloading Configuration Files from an Rcp Server
556
Uploading Configuration Files to an Rcp Server
557
Clearing the Configuration
558
Chapter 36 Configuring Switch Acceleration
559
Understanding How Switch Acceleration Works
559
Configuring Switch Acceleration on the Switch
561
Enabling Switch Acceleration
561
Displaying Switch-Acceleration Information
561
Backplane Channel Module
562
Chapter 37 Configuring System Message Logging
563
Understanding How System Message Logging Works
563
System Log Message Format
565
Default System Message Logging Configuration
565
System Log Message Format
566
Configuring System Message Logging on the Switch
566
Configuring Session Logging Settings
566
Configuring the System Message Logging Levels
567
Enabling and Disabling the Logging Time Stamp
568
Setting the Logging Buffer Size
568
Limiting the Number of Syslog Messages
568
Configuring the Syslog Daemon on a UNIX Syslog Server
569
Configuring Syslog Servers
569
Displaying the Logging Configuration
571
Displaying System Messages
572
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
Enabling NTP in Broadcast-Client Mode
578
Configuring NTP in Client Mode
579
Configuring Authentication in Client Mode
580
Setting the Time Zone
581
Enabling the Daylight Saving Time Adjustment
581
Disabling the Daylight Saving Time Adjustment
583
Clearing the Time Zone
583
Clearing NTP Servers
583
Disabling NTP
584
Appendix
585
Appendix A Acronym
586
I N D E X
595
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