Cisco IOS Configuration Fundamentals Configuration Guide (Release 12.2)

Cisco IOS Configuration Fundamentals Configuration Guide......Page 1
Documentation Modules......Page 23
Supporting Documents and Resources......Page 26
New Features in Cisco IOS Release 12.2......Page 27
Using Software Release Notes......Page 28
Document Conventions......Page 29
Documentation CD-ROM......Page 30
Cisco.com......Page 31
Contacting TAC by Telephone......Page 32
CiscoIOS User Interfaces......Page 33
System Management......Page 34
Overview of Router Configuration Tasks......Page 35
Storing or Obtaining Configuration Files or Images from a Server......Page 36
Changing the Image or Configuration File Loaded by the Router......Page 37
Cisco IOS User Interfaces......Page 39
Cisco IOS CLI Command Modes Overview......Page 41
User EXEC Mode......Page 42
Privileged EXEC Mode......Page 44
Global Configuration Mode......Page 45
Interface Configuration Mode......Page 46
ROM Monitor Mode......Page 47
Summary of Main Cisco IOS Command Modes......Page 49
Getting Context-Sensitive Help......Page 50
Displaying All User EXEC Commands......Page 53
Using the no and default Forms of Commands......Page 54
Recalling Commands......Page 55
Moving the Cursor on the Command Line......Page 56
Completing a Partial Command Name......Page 57
Editing Command Lines that Wrap......Page 58
Transposing Mistyped Characters......Page 59
Disabling and Reenabling Editing Features......Page 60
Single-Character Patterns......Page 61
Searching and Filtering more Commands......Page 65
Using the Cisco IOS CLI Examples......Page 66
Determining Command Syntax and Using Command History Example......Page 67
Searching and Filtering CLI Output Examples......Page 68
Using AutoInstall......Page 71
Understanding AutoInstall......Page 72
Specifying a Default Router......Page 75
Preparing a Configuration File......Page 76
AutoInstall over LAN Interfaces......Page 77
AutoInstall over Serial Interfaces......Page 80
Configuring a Staging Router......Page 82
Configuring a Cisco Router as a DHCP Server......Page 85
Monitoring and Completing the AutoInstall Process......Page 88
Network Configuration for DHCP-Based AutoInstall Example......Page 89
Using Setup After First-Time Startup......Page 91
Using Streamlined Setup......Page 98
Cisco ConfigMaker......Page 99
Cisco Fast Step......Page 100
Terminal Operating Characteristics Configuration Task List......Page 101
Setting Local Terminal Parameters......Page 102
Saving Local Settings Between Sessions......Page 103
Defining the Escape Character and Other Key Sequences......Page 104
Globally Defining Escape Character and Other Key Sequences......Page 105
Generating a Hardware Break Signal for a Reverse Telnet Connection......Page 106
Allowing Transmission Speed Negotiation......Page 107
Configuring Data Transparency for File Transfers......Page 108
Specifying the Character Display for All Lines......Page 109
Setting Character Padding for a Line......Page 110
Specifying the Terminal and Keyboard Type for the Current Session......Page 111
Enabling Pending Output Notifications......Page 112
Creating Character and Packet Dispatch Sequences......Page 113
Enabling Session Locking......Page 114
Configuring Communication Parameters for Terminal Ports......Page 115
Changing the Retry Interval for a Terminal Port Queue......Page 116
Configuring LPD Protocol Support on a Printer......Page 117
Managing Connections, Menus, and System Banners Task List......Page 119
Displaying Current Terminal Characteristics......Page 120
Assigning a Logical Name to a Connection......Page 121
Changing a Login Name......Page 122
Sending Messages to Other Terminals......Page 123
Logging Out of a Router......Page 124
Configuring an Idle Terminal Message......Page 125
Configuring Terminal Banners......Page 126
Configuring a Message-of-the-Day Banner......Page 127
Configuring an Incoming Banner......Page 128
Enabling or Disabling the Display of Banners......Page 129
Creating Menus......Page 131
Specifying the Menu Title......Page 132
Specifying the Menu Prompt......Page 133
Specifying the Underlying Command for the Menu Item......Page 134
Creating a Submenu......Page 136
Creating Hidden Menu Entries......Page 137
Displaying an Informational Status Line......Page 138
Invoking the Menu......Page 139
Connection Management, System Banner, and User Menu Configuration Examples......Page 140
Sending Messages to Other Terminals Example......Page 141
Clearing a TCP/IP Connection Example......Page 142
Setting a SLIP-PPP Banner with Banner Tokens Example......Page 143
Configuring a Menu Example......Page 144
Cisco Web Browser UI Task List......Page 145
Applying an Access List to the HTTP Server......Page 146
Accessing the Router Home Page......Page 147
Entering Commands Using Hypertext Links......Page 149
Entering Commands Using the URL Window......Page 150
Understanding SSIs......Page 151
Displaying HTML Files Containing SSIs......Page 153
Using the SSI EXEC Command Example......Page 154
Using the SSI ECHO Command Example......Page 155
File Management......Page 157
IFS Use and Management Task List......Page 159
Creating and Navigating Directories......Page 160
Specifying Local Files......Page 161
Using URL Prefixes......Page 162
URL Component Lengths......Page 163
Using the Default File System......Page 164
Listing Available File Systems......Page 165
Displaying Information About Files on a File System......Page 166
Flash Memory File System Types......Page 168
Recovering Deleted Files on a Flash Memory Device......Page 169
Permanently Deleting Files on a Flash Memory Device......Page 170
Class B Flash File Systems......Page 171
Erasing Flash Memory......Page 172
Deleting Files on a Flash Memory Device......Page 173
NVRAM File System Management......Page 174
System File System Management......Page 175
Types of Configuration Files......Page 177
Configuration File Management Task List......Page 178
Modifying the Configuration File at the CLI......Page 179
Copying a Configuration File from the Router to an rcp Server......Page 181
About the rcp Username......Page 182
Copying a Configuration File from the Router to an FTP Server......Page 183
Copying a Configuration File from the Router to the FTP Server......Page 184
Copying Configuration Files from a Network Server to the Router......Page 185
Copying a Configuration File from an rcp Server to the Router......Page 186
Copying a Configuration File from the rcp Server to the Router......Page 187
Understanding the FTP Username and Password......Page 188
Copying a Configuration File from an FTP Server to the Router......Page 189
Compressing the Configuration File......Page 190
Storing the Configuration in Flash Memory on Class A Flash File Systems......Page 191
Loading the Configuration Commands from the Network......Page 192
Controlling the Parser Cache......Page 193
Monitoring the Parser......Page 194
Copying Configuration Files from Flash Memory to the Startup or Running Configuration......Page 195
Copying a Configuration File Between Local Flash Memory Devices Example......Page 196
Copying a Configuration File from a Server to Flash Memory Devices......Page 197
Reexecuting the Configuration Commands in the Startup Configuration File......Page 198
Deleting a Specified Configuration File......Page 199
Specifying the CONFIG_FILE Environment Variable on Class A Flash File Systems......Page 200
Understanding the rcp Username......Page 201
Configuring the Router to Download Configuration Files......Page 202
Configuring the Router to Download the Host Configuration File......Page 203
Types of Images......Page 205
General Output Conventions for Copy Operations......Page 206
Displaying System Image Information......Page 207
Copying an Image from Flash Memory to a TFTP Server Example......Page 208
Copying an Image from Flash Memory to an rcp Server......Page 209
Copy from Slot1 to RCP Server Example......Page 210
Copying from Flash Memory to an FTP Server Tasks......Page 211
Copying Images from a Network Server to Flash Memory......Page 213
Understanding Flash Memory Space Considerations......Page 214
Copying to Flash Memory for Run-from-Flash Systems......Page 215
Copying an Image from a TFTP Server to a Flash Memory File System......Page 216
Copying from an rcp Server to Flash Memory......Page 218
Understanding the FTP Username and Password......Page 220
Copying from an FTP Server to Flash Memory......Page 221
Copying Images Between Local Flash Memory Devices......Page 222
Copying a File Between Local Flash Memory Devices Example......Page 223
Specifying the Startup System Image in the Configuration File......Page 224
Configuring the Router to Automatically Boot from an Image in Flash Memory......Page 225
Loading the System Image from a Network Server......Page 226
Loading the System Image from ROM......Page 228
Using a Fault-Tolerant Booting Strategy......Page 229
Recovering a System Image Using Xmodem or Ymodem......Page 230
Xmodem Transfer Using the Cisco IOS Software Example......Page 231
Xmodem Transfer Example Using the ROM Monitor......Page 233
Understanding Microcode Images......Page 234
Reloading the Microcode Image......Page 235
Loading Microcode Images on the Cisco 12000 GSR......Page 236
DRAM......Page 239
Flash Memory......Page 240
Maintaining System Memory Task List......Page 241
Benefits of Partitioning Flash Memory......Page 242
Using Flash Load Helper to Upgrade Software on Run-from-Flash Systems......Page 243
Flash Load Helper Features......Page 244
Downloading Files Using the Flash Load Helper......Page 245
Formatting Flash Memory......Page 246
Recovering from Locked Blocks......Page 247
Reallocating DRAM Memory for the Cisco3600 Series......Page 248
Reallocate Processor Memory and I/O Memory Example......Page 249
Configuring and Verifying Memory Scan......Page 250
Which Configuration File Does the Router Use upon Startup?......Page 253
Which Image Does the Router Use upon Startup?......Page 254
Modifying the Configuration Register Boot Field......Page 257
Modifying the Software Configuration Register Boot Field......Page 258
BOOTLDR Environment Variable......Page 260
Controlling Environment Variables......Page 261
Scheduling a Reload of the System Image......Page 262
Display Information about a Scheduled Reload......Page 263
Entering ROM Monitor Mode......Page 264
Manually Loading a System Image from ROM Monitor......Page 265
Manually Booting from Flash Memory in ROMMON......Page 266
Manually Booting from ROM in ROMMON......Page 267
Exiting from ROMMON......Page 268
Configuring a Router as a TFTP or RARP Server......Page 269
TFTP Router Configuration Prerequisite Tasks......Page 270
Enabling the TFTP Server......Page 271
Configuring the Client Router......Page 272
Configuring a Router as a RARP Server......Page 274
Configuring System BOOTP Parameters......Page 275
Configuring the Router to Allow Remote Users to Execute Commands Using rsh......Page 276
Executing Commands Remotely Using rsh......Page 277
Configuring the Router to Accept rcp Requests from Remote Users......Page 278
Configuring the Remote to Send rcp Requests......Page 279
Configuring a Router to Use FTP Connections......Page 280
System Management......Page 281
Basic System Management Task List......Page 283
Creating and Displaying Command Aliases......Page 284
Controlling Minor Services......Page 285
Controlling the Finger Protocol......Page 286
Setting Time and Calendar Services......Page 287
Network Time Protocol......Page 288
Simple Network Time Protocol......Page 289
Configuring NTP......Page 290
Configuring Poll-Based NTP Associations......Page 291
Configuring Broadcast-Based NTP Associations......Page 292
Configuring NTP Authentication......Page 293
Configuring the Source IP Address for NTP Packets......Page 294
Configuring an External Reference Clock......Page 295
Configuring Time and Date Manually......Page 297
Configuring Summer Time (Daylight Savings Time)......Page 298
Setting the Hardware Clock......Page 299
Monitoring Time and Calendar Services......Page 300
Defining a Time Range......Page 301
Handling an Idle Telnet Connection......Page 302
Limiting the Number of TCP Transactions......Page 303
Modifying the System Buffer Size......Page 304
System Configuration File Example......Page 305
Clock, Calendar, and NTP Configuration Examples......Page 306
Buffer Modification Examples......Page 307
Troubleshooting and Fault Management Task List......Page 309
Displaying System Information Using show Commands......Page 310
Configuring the TCP Keepalive Packet Service......Page 311
Testing Memory and Interfaces......Page 312
Logging System Error Messages......Page 313
Setting the Error Message Display Device......Page 314
Limiting the Error Message Severity Level and Facilities......Page 315
Defining the UNIX System Logging Facility......Page 317
Setting the Syslog Source Address......Page 318
Using Field Diagnostics on Line Cards......Page 319
Creating Core Dumps......Page 320
Using TFTP for Core Dumps......Page 321
Using rcp for Core Dumps......Page 322
Creating an Exception Memory Core Dump......Page 323
Enabling Debug Operations......Page 324
Enabling Conditionally Triggered Debugging......Page 325
Displaying Messages for One Interface......Page 326
Limiting the Number of Messages Based on Conditions......Page 327
Conditionally Triggered Debugging Configuration Examples......Page 328
Using the Environmental Monitor......Page 329
Understanding SNMP......Page 331
SNMP Notifications......Page 332
MIBs and RFCs......Page 334
SNMP Versions......Page 335
SNMP Configuration Task List......Page 336
Creating or Modifying Access Control for an SNMP Community......Page 337
Configuring SNMP-Server Hosts......Page 338
Defining the Maximum SNMP Agent Packet Size......Page 339
Configuring SNMP Notifications......Page 340
Configuring the Router to Send SNMP Notifications......Page 341
Controlling Individual RFC 1157 SNMP Traps......Page 342
Enabling the SNMP Manager......Page 343
SNMP Configuration Examples......Page 344
Ethernet-like Interfaces MIB......Page 345
Interfaces Group MIB Enhancements......Page 346
CISCO-AAA-SESSION-MIB......Page 347
CISCO-POP-MGMT-MIB......Page 348
Response Time Monitor MIB......Page 349
Configuring the Cisco Discovery Protocol......Page 351
CDP Configuration Task List......Page 352
Reenabling CDP on an Interface......Page 353
Setting the CDP Transmission Timer and Hold Time Example......Page 354
Monitoring and Maintaining CDP Example......Page 355
Configuring RMON Support......Page 357
Configuring RMON Groups......Page 359
Monitoring and Verifying RMON Configuration......Page 360
show rmon Command Example......Page 361
Understanding the Cisco SA Agent......Page 363
Cisco SA Agent Configuration Task List......Page 364
Configuring SA Agent Operations......Page 365
Configuring the Operation Type......Page 366
Setting General Operational Characteristics......Page 368
Setting Statistics Gathering Characteristics......Page 369
Setting History Characteristics......Page 371
Setting Reaction Thresholds......Page 372
Enabling the SA Agent Responder on Operational Targets......Page 373
Resetting the SA Agent......Page 374
Displaying SA Agent Status and SA Agent Operational Results......Page 375
Changing the Memory Threshold for the SA Agent......Page 376
Configuring a Jitter Operation......Page 377
Configuring a DHCP Operation......Page 379
Modifying Configuration Parameters While an Operation Is Active......Page 380
Enabling SA Agent SNMP Notifications......Page 381
SNA Echo Example......Page 382
Configuration Files for Router A and Router B......Page 383
Router B Configuration......Page 384
SA Agent Control Protocol Authentication Example......Page 385
Jitter Operation Example......Page 386
HTTP GET Operation Example......Page 388
HTTP RAW Operation Through a Proxy Server Example......Page 389
DNS Operation Example......Page 390
DLSw Operation Example......Page 391
Connection Loss Trigger Example......Page 392
Creating a Path Echo Operation Example......Page 393
Creating an HTTP Get Operation Example......Page 394
Creating an FTP Operation Example......Page 395
Understanding WCCP......Page 397
Understanding WCCPv1 Configuration......Page 398
Understanding WCCPv2 Configuration......Page 399
Support for Multiple Routers......Page 400
Restrictions for WCCPv2......Page 401
Specifying a Version of WCCP......Page 402
Configuring a Service Group Using WCCPv2......Page 403
Registering a Router to a Multicast Address......Page 404
Setting a Password for a Router and Cache Engines......Page 405
Changing the Version of WCCP on a Router Example......Page 406
Running a Reverse Proxy Service Example......Page 407
Verifying WCCP Settings Example......Page 408
Appendixes......Page 411
Privileged EXEC Mode......Page 413
Configuration Modes and Submodes......Page 414
Access-point List Configuration Mode......Page 415
APPN Configuration Modes......Page 416
ATM VC CES Configuration Mode......Page 417
ATM PVC-in-range Configuration Mode......Page 418
CAS Custom Configuration Mode......Page 419
Crypto Map Configuration Mode......Page 420
Dial Peer COR List Configuration Mode......Page 421
Frame Relay DLCI Configuration Mode......Page 422
Hex Input Mode......Page 423
IBM Channel Internal LAN Interface Configuration Mode......Page 424
IPX Router Configuration Mode......Page 425
LANE Database Configuration Mode......Page 426
MPOA Client (MPC) Configuration Mode......Page 427
Public-Key Chain Configuration Mode......Page 428
QoS Policy-Map Configuration Mode......Page 429
RLM Group Configuration Mode......Page 430
(Resource-Pool) Resource Group Configuration Mode......Page 431
RTR Entry Configuration Mode......Page 432
Service Profile Configuration Mode......Page 433
SLB Virtual Server Configuration Mode......Page 434
Static Maps List Configuration Mode......Page 435
TN3270 Server Configuration Mode......Page 436
TN3270 DLUR Linked SAP Configuration Mode......Page 437
TN3270 Response-Time Configuration Mode......Page 438
Voice Class Configuration Mode......Page 439
VRF Configuration Mode......Page 440
Configuration Modes Summary Table......Page 441
Configuring Dual RSPs on Cisco 7500 Series Routers......Page 455
Understanding Master and Slave Operation......Page 456
Specifying the Default Slave RSP......Page 457
Ensuring That Both RSP Cards Contain the Same System Image......Page 458
Ensuring That Both RSP Cards Contain the Same MicrocodeImage......Page 460
Specifying Different Startup Images for the Master and SlaveRSPs......Page 461
Setting Environment Variables on the Master and Slave RSP......Page 466
Monitoring and Maintaining Dual RSP Operation......Page 467
Troubleshooting and Reloading a Failed RSP Card......Page 468
Displaying Information About Master and Slave RSP Cards......Page 469
Index......Page 471
Index......Page 473