class 13 - Basic Commands in Router Thursday, July 05, 2007

8/6/2019 class 13 - Basic Commands in Router Thursday, July 05, 2007

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Basic Commands in Router


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E ntraining to the US E R EXE C mode

User Ex ec Mode (User Mode) it a entry point toconfigure the routers.

From user e x ec mode we cannot make changesin the router

We can set password to protect the anonymous

user to get into this modeThe prompt :

Host Name>


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E ntraining to the privileged mode

In privilege Mode we can view the configuration

Copy the configurations

Set few configurations

The prompt :

Host name >enableHost name#


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E ntraining to the Global Configurationmode

In Global Configuration Mode we can make globalchanges in the router configuration

In it also called as Power Mode because the commandwe apply will affect the entire router configuration

The prompt :

Host Name>enable

Host Name#configure terminal

Host Name(config)#


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E ntraining to the interface mode

Interface mode helps us to configure an interfacein the ROUT E R

The prompt :Host Name >enable

Host Name#configure terminal

Host Name(config)#interface e0

Host Name(config-if)#


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Command to set the time and date

Host Name #clock set hh:min:sec dd mmyyyy

Host Name #clock set 20:56:12 25 09 2004


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Command to check the time and date set

Host Name # show clock


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Command to display recently typedcommands

Host Name # show history


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Command to set the history size

Host Name # terminal history size


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Command to view the configuration of

the router Host Name # show version

Aita# show versionCisco Internetwork Operating System SoftwareIOS (tm) 2500 Software (C2500-JS-L), Version 12.0(3), RELEASE SOFTWARE (fc1)Copyright (c) 1986-1999 by cisco Systems, Inc.Compiled Mon 08-Feb-99 18:18 by phanguyeImage text-base: 0x03050C84, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWAREBOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0 router up tme is 20 minutes

System restarted by reloadSystem image file is "flash:c2500-js-l_120-3.bin"

Configuration register is 0x2102


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Command to set a privilege password

Host Name (config)#enable password

Host Name>enable

Host Name #config terminalHost Name (config)# enable password cisco


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Command to set a encrypted privilege password

Host Name (config)#enable secret

Host Name >enableHost Name #config terminalHost Name (config)# enable secret cisco


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Command to set a user-mode password

Host Name (config)#line console 0

Host Name (config-line)#login

Host Name (config-line)#password

Host Name (config)# line console 0Host Name (config-line)# loginHost Name (config-line)# password aita


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Command to manually encrypt the password

Host Name (config)#service password-encryption


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Command to disable the manually encrypt the password

Host Name (config)# no service password-encryption


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Command to set Banner

Host Name (config)#banner motd #message #


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Configuring an InterfaceConfiguring an Interface

RouterA(config)# interface type port-number

RouterA(config-if)#


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Command to set clock rate for a interface

Host Name (config)#interface e0

Host Name (config-if)#clock rate

RouterA(config-if)# clock rate 64000RouterA(config-if)#


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Command to set Band width to an interface


Host Name (config-if)#bandwidth

RouterA(config-if)# bandwidth 64

RouterA(config-if)# exitRouterA(config)# exitRouterA#


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Command to set hostname to a router

Host Name (config)#hostname


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Command to display the running-configuration

Host Name #show running-configuration


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Command to display the startup-configuration

Host Name #show running-configuration


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Command to copy the configuration from running-configuration to startup-configuration

Host Name #copy running-config startup-config

Host Name >enableHost Name #copy running-config startup-configDestination filename [startup-config]?Building configuration

Host Name #


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Command to assign a ip address to an interface

Host Name #config terminal


Host Name (config-if)#ip address

Host Name (config-if)#no shutdown


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Command to display the information about an interface

Host Name #show interface e0Router# show interface serial 0Serial0 is up, line protocol is up

Hardware is HD64570Internet address is 10.140.4.2/24

MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255Encapsulation HDLC, loopback not set, keepalive set (10 sec)Last input 00:00:09, output 00:00:04, output hang neverLast clearing of "show interface" counters neverInput queue: 0/75/0 (size/max/drops); Total output drops: 0Queueing strategy: weighted fairOutput queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/1/256 (active/max active/max total)Reserved Conversations 0/0 (allocated/max allocated)

5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec


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Command to display the information about all the

Host Name #show interface

Router# show interfaceEthernet0 is up, line protocol is up

Hardware is Lance, address is 00e0.1e5d.ae2f (bia 00e0.1e5d.ae2f)Internet address is 10.1.1.11/24MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255Encapsulation ARPA, loopback not set, keepalive set (10 sec)ARP type: ARPA, ARP Timeout 04:00:00Last input 00:00:07, output 00:00:08, output hang neverLast clearing of "show interface" counters neverQueueing strategy: fifoOutput queue 0/40, 0 drops; input queue 0/75, 0 drops5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec

81833 packets input, 27556491 bytes, 0 no bufferReceived 42308 broadcasts, 0 runts, 0 giants, 0 throttles1 input errors, 0 CRC, 0 frame, 0 overrun, 1 ignored, 0 abort0 input packets with dribble condition detected55794 packets output, 3929696 bytes, 0 underruns0 output errors, 0 collisions, 1 interface resets0 babbles, 0 late collision, 4 deferred0 lost carrier, 0 no carrier0 output buffer failures, 0 output buffers swapped out


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show flash Command

Host Name #show flash

System flash directory:File Length Name/status

1 10084696 c2500-js-l_120-3.bin

[10084760 bytes used, 6692456 available, 16777216 total]16384K bytes of processor board System flash (Read ONLY)


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Configuration Register ValuesConfiguration Register Values

Configuration Register Boot Field Value

0x2100

0x2102 to 0x210F

0x2101

Meaning

Use ROM monitor mode(Manually boot using the bcommand)

Examine NVRAM for boot systemcommands (0x2 default if router hasFlash)

Automatically boot from ROM (Provides IOS subset)

RouterA#configure terminal

RouterA(config)# config-register 0x2102

RouterA#reload


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RouterA(config)# line vty 0 4RouterA(config-line)# loginRouterA(config-line)# password aita

Command to configure Virtual

Terminal Password


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Router# show interfaces serial 1

Serial1 is up, line protocol is up

Hardware is HD64570

Description: 64Kb Line to San Jose:: :: :: :: :: :: :: :: ::

Operational..................Connection problem...Interface problem........Disabled ......................

Serial1 is up, line protocol is upSerial1 is up, line protocol is downSerial1 is down, line protocol is downSerial1 is administratively down, line protocol is down

KeepalivesCarrier Detect

Interpreting Interface Status


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(Automatic scrolling of long lines).

Move to the beginning of the command line.

Move to the end of the command line.

Move back one word.

Move forward one character.

Move back one character.

Move forward one word.

Using E nhanced E ditingCommands


Delete a single character.


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Redisplays the line.

Erases a line.

Erases a word.

Returns to the EXEC MODE.

TAB Finishes typing a command.




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Ctrl-P or Up arrow Last (previous) command recall

Ctrl-N or Down arrow More recent command recall

Router> show history Show command buffer contents

Router> terminal history size lines Set session command buffer size


class 13 - Basic Commands in Router Thursday, July 05, 2007

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