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Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.1
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Table of Contents
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About the Cisco IOS Documentation Set
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Configuration Fundamentals Overview
- Part 1: Cisco IOS User Interfaces
- Part 2: Cisco IOS File Management
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Part 3: Cisco IOS System Management
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Configuring SNMP Support
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Configuring RMON Support
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Configuring Cisco Discovery Protocol (CDP)
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Network Monitoring Using Cisco Service Assurance Agent (SAA)
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Troubleshooting the Router
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Performing Basic System Management
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System Management Using System Controllers
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Configuring Web Cache Services Using WCCP
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Managing Dial Shelves
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Appendix: Cisco IOS Command Modes
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Index: Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.1
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Table Of Contents
Index: Cisco IOS Configuration Fundamentals Configuration Guide (FC), Release 12.1
Symbols Numerics A B C D E F G H I K L M N O P Q R S T U V W X Y
Symbols
! character
comments FC-136
output FC-242
# character
copy output FC-163
privileged EXEC prompt FC-10
. character
copy command output FC-243
copy output FC-163
> prompt
user EXEC mode FC-9
? command FC-15
^ character
context-sensitive help FC-19
Numerics
7-bit character set
special characters FC-68
8-bit character set
displaying FC-110
special characters FC-68
A
abbreviating commands
context-sensitive help FC-15
absolute command FC-338
accept-dialin configuration mode
entering FC-411
accept-dialout configuration mode
entering FC-411
access list configuration mode
See standard named access list configuration mode
See also extended named access list configuration mode
access lists
named
extended, configuration mode FC-405
standard, configuration mode FC-400
using time-ranges with FC-338
using with WCCP FC-371
activation character
setting FC-62
activation-character command FC-63
addresses
IP
mapping to host names FC-41
alias command FC-326
aliases
use in IOS File System (URL Prefixes) FC-118
use in ROM monitor mode FC-14
ALPS ASCU configuration submode
entering FC-405
ALPS circuit configuration mode
entering FC-403
summary FC-387
APPN
configuration modes FC-387
ASCII
character widths, changing FC-68
dispatch character FC-72
escape character FC-64
hold character FC-64
padding FC-69
start character FC-73
stop character FC-73
async-bootp command FC-247
ATM map class configuration mode
See map-class configuration mode
attach shelf command FC-348
authentication database
rcp and rsh
creating FC-248
authoritative time source
calendar system, using as FC-330
description FC-329
NTP FC-333
autobaud command FC-74
autocommand menu command FC-95
Autoconfiguration
automatic shelf discovery FC-346
system controller FC-345, FC-346
AutoInstall
functional description FC-39
requirements FC-37
router interface pre-configuration FC-43
automatic shutdown message
receiving FC-305
automatic warning message
receiving FC-305
auxiliary ports
asynchronous serial interface FC-43
B
banner exec command FC-85
banner incoming command FC-85
banner login command FC-84
banner motd command FC-84
banners
incoming message FC-85
line-activation FC-85
LOGIN FC-84
MOTD FC-84
on a line, disabling or enabling FC-85
token variables FC-83
banner tokens
(example) FC-98
description FC-83
Banyan VINES
baud rates
automatic detection, configuring FC-74
setting for a line FC-74
boot bootldr command FC-217, FC-218
boot buffersize command FC-148, FC-149
boot config command FC-155, FC-217
BOOT environment variable
configuring FC-228
description FC-216
displaying FC-134, FC-162, FC-210
boot field
See configuration register boot field
boot flash command FC-222
boot host command FC-159
boot images
description FC-162
helper FC-218
booting
fault-tolerant strategy FC-186
Flash memory FC-182
Flash load helper FC-203
from a network server FC-184
(example) FC-185
information, displaying FC-210
interrupting FC-220
manually
Flash memory (example) FC-223
network file (example) FC-224
ROM monitor FC-222
process FC-210
(figure) FC-213
ROM FC-186
startup configuration file FC-210
system image
selecting FC-211
BOOTLDR environment variable
(example) FC-218
configuring FC-218
description FC-217
setting FC-218
boot mop command FC-224
boot network command FC-150
boot network mop command FC-158
Boot Operation Protocol
BOOTP
server
AutoInstall, configuring FC-46
role in AutoInstall (figure) FC-40
specifying extended requests for asynchronous interfaces FC-247
service
enabling FC-327
boot register
See configuration register boot field
boot system command FC-184, FC-217, FC-232
boot system flash command FC-182, FC-186
boot system mop command FC-184
boot system rcp command FC-184
boot system rom command FC-186, FC-244
boot system tftp command FC-184
Break key
system startup FC-13
buckets-of-history-kept command FC-289
buffers
editor, pasting from FC-23
system
(examples) FC-344
size, changing FC-341
buffers command FC-341
buffers huge size command FC-341
busy-message command FC-83
C
cache engine clusters
description FC-363
cache engines
description FC-363
cache farms
ca-identity configuration mode
entering FC-403
calendar set command FC-336
calendar system
description FC-330
network time source, configuring as FC-337
setting manually FC-336
setting system clock FC-337
updating from NTP FC-333
CASA
listen ports
MNLB forwarding agent FC-388
CASA configuration mode
entering FC-404
summary FC-388
CAS custom configuration mode
entering FC-404
cautions
test commands FC-307
testing interface status FC-307
usage in text xxix
CCO
accessing xxix
definition xxix
cd command FC-122
CDP
configuration task list FC-278
disabling for routing device FC-279
enabling on an interface FC-280
monitoring and maintaining FC-280
TLVs FC-278
transmission timer and holdtime, setting FC-279
Version-2 (CDPv2) FC-277
cdp enable command FC-280
cdp holdtime command FC-279
cdp run command FC-279
cdp timer command FC-279
certificate authorities configuration mode
summary FC-389
certificate chain configuration mode
entering FC-404
summary FC-389
character data bits
setting for current session FC-74
character padding
setting for current session FC-69
setting globally FC-69
character set
7-bit for standard U.S. characters FC-68
8-bit for special characters FC-68
international FC-68
checksums
system image files, verifying FC-179
Cisco 3600 series
software disaster recovery FC-187
Cisco Cache Engines FC-363
Cisco Connection Online
Cisco Discovery Protocol
Cisco IOS
CLI (command-line interface)
description FC-7
understanding FC-4
documentation
IOS File System FC-115
Release 12.1 new features FC-5
releases
displaying version number FC-162
software images
Cisco Web browser FC-101
clear cdp counters command FC-280
clear cdp table command FC-280
clear logging command FC-309
clear tcp command FC-81
CLI
client router
TFTP service, configuring FC-244
(example) FC-245
clock calendar-valid command FC-337
clock rate command FC-43, FC-44
clock read-calendar command FC-337
clocks
setting FC-328
clock set command FC-336
clock summer-time command FC-335
clock timezone command FC-335
clock update-calendar command FC-337
cold restart
command aliases
creating FC-326
command history
buffer size FC-20
commands
recalling FC-21
description FC-20
disabling FC-21
command-line interface
command modes
configuration modes
summary table FC-403 to FC-412
global configuration FC-11, FC-136
interface configuration FC-11 to FC-12, FC-392
privileged EXEC FC-10
ROM monitor FC-13, FC-220 to FC-222
router configuration FC-399
subinterface configuration FC-12 to FC-13, FC-400
summary table FC-14
user EXEC FC-9
commands
aliases, creating FC-326
completion help FC-22
mapping old to new (table) FC-133, FC-195
command syntax conventions
Cisco IOS documentation xxix
command syntax help
comments
adding to configuration files FC-136
communication parameters
terminal FC-74
community string
defining FC-263
Conditionally Triggered Debugging
conditional FC-321
description FC-319
protocol specific FC-320
CONFIG_FILE environment variable
configuration file, viewing FC-218
specifying FC-155
ConfigMaker FC-57
config-register command FC-182, FC-186, FC-215, FC-232
configuration commands
clearing FC-154
entering from the terminal FC-136
loading from the network FC-149
source, selecting FC-136
configuration files
(example) FC-343
clearing FC-154
compressing FC-147
CONFIG_FILE environment variable FC-155
copying
between Flash memory devices FC-151
(example) 1
from a network server FC-142, FC-152
from an rcp server FC-143
from a TFTP server FC-143
from Flash memory FC-150
to a network server FC-137
to an rcp server FC-138
to a TFTP server FC-138
description FC-135
displaying
active FC-135
CONFIG_FILE environment variable FC-135, FC-210
information FC-134
downloading FC-156
(example) FC-159
host configuration files FC-159
network configuration files FC-158
failing to load FC-158
host
larger than NVRAM FC-147
loading FC-5
loading from the network FC-149
location FC-135
modifying FC-136
network
See network configuration file
See also running configuration
servers
loading FC-5
storing FC-5
startup
specifying FC-155
See also startup configuration
storing in Flash memory FC-148
types FC-135
configuration modes
summary list FC-386
See also command modes, configuration modes
configuration register
ROM monitor mode FC-210
setup command facility FC-49
streamlined setup facility FC-55
See also configuration register boot field
configuration register boot field
bits FC-214
how routing device uses FC-214
listing value FC-215
modification tasks FC-215
(example) FC-215
configuration synchronization
configure memory command FC-153
configure terminal command FC-11, FC-136
configuring shelf IDs
description 378
using the shelf-id command 379
connections
diagnosing FC-306
escaping from FC-78
FTP FC-252
idle FC-339
name FC-78
refusing full duplex FC-65
resuming FC-90
switching FC-78
console
displaying debug messages FC-73
context-sensitive help
(example) FC-16
command syntax help FC-16
syntax checking FC-19
user-level commands FC-18
word help FC-16
continue command FC-225
controller configuration mode
entering FC-404
summary FC-389
copy command FC-155, FC-228, FC-230, FC-231
copy flash rcp command FC-166
copy flash tftp command FC-164
copy nvram: command FC-130
copy process
output FC-163
terminating FC-163
copy rcp command FC-152, FC-153
copy rcp running-config command FC-144, FC-146, FC-175, FC-178
copy rcp startup-config command FC-144, FC-146
copy running-config rcp command FC-139, FC-141, FC-149, FC-168
copy running-config startup-config command FC-218
copy running-config tftp command FC-46, FC-138, FC-149
copy startup-config command FC-148
copy startup-config rcp command FC-139, FC-141
copy startup-config tftp command FC-138
copy system: command FC-131
copy system:running-config command FC-351
copy tftp command FC-153
copy tftp file_id command FC-172, FC-192
copy tftp flash command FC-172, FC-192, FC-204
copy tftp running-config command FC-143
copy tftp startup-config command FC-143
copy xmodem flash command FC-187
copy ymodem flash command FC-187
core dumps
capture using FTP (example) FC-253
suprious interrupts FC-318
crash information
gathering FC-315
CrossTalk
files, downloading FC-67
crypto ca identity command FC-403
crypto ipsec transform-set command FC-404
crypto isakmp policy command FC-407
crypto map configuration mode
entering FC-404
summary FC-389
crypto transform configuration mode
description FC-390
entering FC-404
Ctrl-] command FC-81
Ctrl-C command FC-80
current configuration
viewing FC-131
cursor
command line
moving FC-22
customer profile configuration mode
entering FC-404
summary FC-390
D
data bits
changing character FC-74
databits command FC-68
data-character-bits command FC-68
data flow control
setting FC-73
daylight savings time
configuring FC-335
debug aaa command FC-320
debug command output
displaying on terminal FC-73
debug commands
description FC-319
listing FC-319
debug condition command FC-321
debug dialer command FC-320
debugging
system FC-319
debug isdn command FC-320
debug modem command FC-320
debug ppp command FC-320
debug syscon sdp command FC-347
default form of a command
using FC-21
default-value exec-character-bits command FC-68
default-value special-character-bits command FC-68
delete command FC-125, FC-127, FC-129, FC-154
DHCP pool configuration mode
entering FC-404
summary FC-390
diag command FC-314
diagnostic testing FC-313
dial peer configuration mode
description FC-390
dial peer voice command FC-404
dial peer voice configuration mode
entering FC-404
dial shelf cards
executing commands directly on FC-314
dial-tdm-clock command 381
Dial-up software
connectivity problems
SLIP-PPP FC-85
dir command FC-218, FC-228, FC-229, FC-231
Flash files FC-122
disable command FC-10
disconnect character
setting FC-62
disconnect-character command FC-63
disconnect command FC-81, FC-82
dispatch character
setting FC-72
dispatch-character command FC-72
dispatch-machine command FC-72
dispatch-timeout command FC-72
Distributed System Interconnect Protocol
description 377
distributions-of-statistics-kept command FC-288
DLUR configuration mode
entering FC-410
DLUR PU configuration mode
entering FC-410
DLUR SAP configuration mode
entering FC-410
DNIS group configuration mode
entering FC-404
summary FC-390
documentation conventions
Cisco IOS xxviii
DRAM
description FC-196
reallocating FC-198
(example) FC-200
DSC
configuring clocks 381
dual Flash bank
benefits FC-201
configuring FC-200
partitioning Flash memory FC-200, FC-202
systems that support FC-201
versus Flash load helper FC-201
duplex mismatch error FC-277
dynamic random-access memory
E
E character
copy output FC-243
echo protocol
ping test FC-306
editing
command-line features
disabling FC-26
enabling FC-26
editing command FC-26
editor
capitalization
controlling FC-25
characters
transposing FC-25
command completion FC-22
cursor
moving FC-22
display
scrolling down FC-24
entries
deleting FC-24
features FC-22
keys and functions FC-22 to FC-25
line
redisplaying FC-25
line-wrap feature FC-23
pasting from buffer FC-23
encapsulation frame-relay command FC-44
end command FC-11
ending
sessions FC-61
end-of-line character
changing FC-66
entering FC-411
environmental conditions
displaying FC-304
environmental monitor
automatic shutdown message FC-305
environment variables
BOOT FC-216
BOOTLDR FC-217
(example) FC-218
setting FC-218
Cisco's implementation FC-216
CONFIG_FILE FC-217
controlling FC-217
viewing FC-218
EPROM
description FC-197
erase nvram: command FC-130
erase startup-config command FC-154
error messages
categories FC-311
CDP FC-277
IP address for syslog server FC-313
levels FC-311
logging keywords
(table) FC-311
severity levels FC-310
TFTP FC-243
escape character
changing for current session FC-64
displaying FC-110
returning to EXEC prompt FC-78
setting globally FC-63
escape-character command FC-63
escape-char none command FC-90
exception linecard command FC-315, FC-318
EXEC
commands
privileged level FC-10
user level FC-9
prompt
returning to from setup FC-49
startup
delaying FC-339
exec-banner command FC-85
exec-character-bits command FC-68
EXEC mode
switching from privileged to user FC-10
exec-timeout command FC-88
execute-on command FC-194, FC-314, 380
exit command FC-11, FC-81, FC-351
exiting
sessions FC-81
extended named access list config mode
entering FC-405
F
fault management
description FC-303
fault-tolerant strategy
booting with FC-186
features
field diagnostic testing FC-313
files
content, displaying FC-123
deleting FC-125, FC-127, FC-129
deleting permanently FC-126
downloading
output FC-171
download mode, setting FC-66
recovering deleted FC-125, FC-127
file system
contents FC-122
default FC-121
Flash FC-124
list FC-121
NVRAM FC-130
remote operations FC-130
File Transfer Protocol
filter-for-history command FC-289
filters
more commands FC-32
--More-- prompts FC-32
show commands FC-31
Finger protocol
enabling FC-327
Flash load helper
(example) FC-204
booting after FC-205
configuration task list FC-203
downloading a file FC-204
failures FC-205
monitoring FC-205
software upgrades FC-202
versus dual Flash bank FC-201
Flash memory
automatically booting from
configuring FC-182
booting from
configuring backup sources (example) FC-187
booting from (example) FC-183
buffer overflow message FC-170
checksum, verifying FC-179
configuration files
copying to (example) FC-153
copying
Flash contains named file (example) FC-174
Flash is full (example) FC-173
security jumper not installed (example) FC-174
space considerations FC-170
description FC-197
ensuring available space before copying to FC-170
file system types FC-124
formatting FC-205
(example) FC-206
HTML pages FC-108
images
copying from FC-164
copying to FC-169
verifying checksum FC-179
information, displaying FC-196
manually booting FC-222
rcp server, copying from FC-165
security precautions FC-198
storing configuration files FC-148
storing HTML pages with SSIs FC-109
testing status FC-307
TFTP server
(example) FC-244
client router (example) FC-245
client router, configuring FC-244
write protection FC-198
Flash memory cards
Flash memory devices
default
(example) FC-122
displaying FC-122
setting FC-121
files
copying FC-151
deleting FC-125, FC-127, FC-129
deleting permanently FC-126
listing FC-122
(example) 1
recovering deleted FC-125, FC-127
flow control
end transmission FC-73
setting for line FC-73
start character FC-73
stop character FC-73
format command FC-206
Frame Relay
multipoint subinterfaces
enabling CDP on FC-280
Frame Relay DLCI configuration mode
entering FC-405
frame-relay interface-dlci command FC-44
frame-relay map ip command FC-44
frequency command FC-286
FTP
configure router for connections FC-252
configuring (example) FC-253
passive-mode FC-252
FTP Server
(example) FC-360
commands FC-354
configuration files, downloading FC-159
file retrieval functions FC-353
router acting as FC-353
ftp-server enable command FC-354
ftp-server topdir command FC-354
G
atekeeper configuration mode
entering FC-405
gateway configuration mode
entering FC-405
global configuration mode
description FC-11
exiting FC-11
summary FC-15
H
hardware break signal
generating FC-64
hardware flow control
configuring FC-73
Health Monitor
(example) FC-356
managed shelf polling FC-348
MIB FC-349
SNMP traps FC-348
using FC-349
help
help command FC-15
hex input mode
See public key hex input configuration mode
High System Availability
history size command FC-20
hold character
changing for session FC-64
setting for line FC-62
hold-character command FC-63
hops-of-statistics-kept command FC-288
host configuration files
comparison with network configuration files FC-156
copying from an rcp server to startup configuration (example) FC-145, FC-147
description FC-156
loading from a server FC-159
(example) FC-159
host-failed message
displaying FC-83
hostname command &#