Cisco basic configuration/en - Revision history

Heth: /* Erasing existing configuration */

2012-11-27T09:15:07Z

‎Erasing existing configuration

Heth at 09:14, 27 November 2012

2012-11-27T09:14:45Z

Heth at 16:20, 28 February 2010

2010-02-28T16:20:25Z

Heth at 02:11, 31 May 2009

2009-05-31T02:11:06Z

Heth: New page: Picture 1: Putty serial communication {{#css: pre { font-weight: bold; font-size: 150%; color: #00FF00; background: black;} }} In this...

2009-05-21T10:30:59Z

New page: right|500px|thumb|Picture 1: Putty serial communication {{#css: pre { font-weight: bold; font-size: 150%; color: #00FF00; background: black;} }} In this...

New page

[[Image:Puttyserial.png|right|500px|thumb|Picture 1: Putty serial communication]]
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In this example we will configure a Cisco 2621XM Router
*hostname Viborg1
*fastethernet 0/0 - 192.168.22.1/24
*fastethernet 0/1 - 172.16.0.1/16
*loopback 0/0 - 10.10.10.1/32
*RIP version 2 on both subnets
Connect a cisco ''Roolover'' cable from the Routers ''Consoleport'' to a COM port on your PC. Start a terminalemulator. I will recommend the terminalemulator [http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html putty]
Start putty and fill out the serial data. Marked with red rings in picture 1. (My COM-port is on COM6, you need to find your own COM-port number)<br/>
Start the router and you can see on Putty that it is booting. When it has bootet you need to remove the existing configuration if it has one.
= Checking for existing configuration =
If the router after boot start the ''System Configuration Dialog'' as shown in the dialog below, the router has no ''startup-configuration'' and you can proceed to [[Cisco basic configuration#setup step 1| Setup step 1]]. If the router writes some weird messages, you need to erase the configuration.
<pre style="margin: 10px 75px;">

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: yes
</pre>

= Erasing existing configuration =
To erase the existing configuration you need to login on the router as shown below. Note that we only use the passwords ''cisco'' or ''class''. If your router has another password you need to perform the [[Cisco password recovery procedure| password recovery procedure]].
<pre style="margin: 10px 75px;">
R5>enable
Password:
R5#
</pre>
After a successful login like shown above you need to erase the ''startup-config'' file in nvram: and ''reload'' the router. Show below.
<pre style="margin: 10px 75px;">
R5#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
R5#reload
</pre>
And the Router reloads with a empty configuration
<span id="setup step 1"></span>

= setup step 1 =
See the example below
<pre style="margin: 10px 75px;">

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: yes

At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.

Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the system

Would you like to enter basic management setup? [yes/no]: yes
Configuring global parameters:

Enter host name [Router]: Viborg1

The enable secret is a password used to protect access to
privileged EXEC and configuration modes. This password, after
entered, becomes encrypted in the configuration.
Enter enable secret: cisco

The enable password is used when you do not specify an
enable secret password, with some older software versions, and
some boot images.
Enter enable password: class

The virtual terminal password is used to protect
access to the router over a network interface.
Enter virtual terminal password: cisco
Configure SNMP Network Management? [yes]: no

Current interface summary

Any interface listed with OK? value "NO" does not have a valid configuration

Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned NO unset up down
FastEthernet0/1 unassigned NO unset up down

Enter interface name used to connect to the
management network from the above interface summary: FastEthernet0/0

Configuring interface FastEthernet0/0:
Use the 100 Base-TX (RJ-45) connector? [yes]:
Operate in full-duplex mode? [no]: yes
Configure IP on this interface? [yes]:
IP address for this interface: 192.168.22.1
Subnet mask for this interface [255.255.255.0] :
Class C network is 192.168.22.0, 24 subnet bits; mask is /24

The following configuration command script was created:

hostname Viborg1
enable secret 5 $1$Q0eK$BS6PyvYOB0dfDILGrDYLc.
enable password class
line vty 0 4
password cisco
no snmp-server
!
no ip routing

!
interface FastEthernet0/0
no shutdown
media-type 100BaseX
full-duplex
ip address 192.168.22.1 255.255.255.0
no mop enabled
!
interface FastEthernet0/1
shutdown
no ip address
!
end

[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.

Enter your selection [2]:2
</pre>
=Setup step 2=
== FastEthernet 0/1 ==
Now we need to configure ''fastethernet0/1''
<pre style="margin: 10px 75px;">
Viborg1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Viborg1(config)#interface FastEthernet0/1
Viborg1(config-if)#ip address 172.16.0.1 255.255.0.0
Viborg1(config-if)#no shutdown
Viborg1(config-if)#CTRL-Z
</pre>

== Loopback 0 ==
And the ''loopback0'' interface
<pre style="margin: 10px 75px;">
Viborg1#configure terminal
Viborg1(config)#interface loopback 0
Viborg1(config-if)#ip address 10.10.10.1 255.255.255.255
Viborg1(config-if)#no shutdown
Viborg1(config-if)#CTRL-Z
</pre>
== Enabling RIP ==
Now the ''rip'' routing protocol
<pre style="margin: 10px 75px;">
Viborg1#configure terminal
Viborg1(config)#ip routing
Viborg1(config)#router rip
Viborg1(config-router)#version 2
Viborg1(config-router)#network 192.168.22.0
Viborg1(config-router)#network 172.16.0.0
Viborg1(config-router)#network 10.0.0.0
Viborg1(config-router)#CTRL-Z
</pre>
[[Category:Cisco]][[Category:CCNA]][[Category:IOS]][[Category:Network]]

@@ Line 24: / Line 24: @@
 To erase the existing configuration you need to login on the router as shown below. Note that we only use the passwords ''cisco'' or ''class''. If your router has another password you need to perform the [[Cisco password recovery procedure| password recovery procedure]].
 <source lang=cli>
-R5>enable
+R5><input>enable</input>
 Password:
 R5#

@@ Line 14: / Line 14: @@
 = Checking for existing configuration =
 If the router after boot start the ''System Configuration Dialog'' as shown in the dialog below, the router has no ''startup-configuration'' and you can proceed to [[Cisco basic configuration#setup step 1| Setup step 1]]. If the router writes some weird messages, you need to erase the configuration.
-<pre style="margin: 10px 75px;">
+<source lang=cli>
           --- System Configuration Dialog ---
-Would you like to enter the initial configuration dialog? [yes/no]: yes
+Would you like to enter the initial configuration dialog? [yes/no]: <input>yes</input>
-</pre>
+</source>
 = Erasing existing configuration =
 To erase the existing configuration you need to login on the router as shown below. Note that we only use the passwords ''cisco'' or ''class''. If your router has another password you need to perform the [[Cisco password recovery procedure| password recovery procedure]].
-<pre style="margin: 10px 75px;">
+<source lang=cli>
 R5>enable
 Password:
 R5#
-</pre>
+</source>
 After a successful login like shown above you need to erase the ''startup-config'' file in nvram: and ''reload'' the router. Show below.
-<pre style="margin: 10px 75px;">
+<source lang=cli>
-R5#erase startup-config
+R5#<input>erase startup-config</input>
 Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
 [OK]
 Erase of nvram: complete
-R5#reload
+R5#<input>reload</input>
-</pre>
+</source>
 And the Router reloads with a empty configuration
 <span id="setup step 1"></span>
@@ Line 41: / Line 41: @@
 = setup step 1  =
 See the example below
-<pre style="margin: 10px 75px;">
+<source lang=cli>
           --- System Configuration Dialog ---
-Would you like to enter the initial configuration dialog? [yes/no]: yes
+Would you like to enter the initial configuration dialog? [yes/no]: <input>yes</input>
 At any point you may enter a question mark '?' for help.
@@ Line 55: / Line 55: @@
 to configure each interface on the system
-Would you like to enter basic management setup? [yes/no]: yes
+Would you like to enter basic management setup? [yes/no]: <input>yes</input>
 Configuring global parameters:
-   Enter host name [Router]: Viborg1
+   Enter host name [Router]: <input>Viborg1</input>
    The enable secret is a password used to protect access to
    privileged EXEC and configuration modes. This password, after
    entered, becomes encrypted in the configuration.
-   Enter enable secret: cisco
+   Enter enable secret: <input>cisco</input>
    The enable password is used when you do not specify an
    enable secret password, with some older software versions, and
    some boot images.
-   Enter enable password: class
+   Enter enable password: <input>class</input>
    The virtual terminal password is used to protect
    access to the router over a network interface.
-   Enter virtual terminal password: cisco
+   Enter virtual terminal password: <input>cisco</input>
-   Configure SNMP Network Management? [yes]: no
+   Configure SNMP Network Management? [yes]: <input>no</input>
 Current interface summary
@@ Line 88: / Line 88: @@
 Configuring interface FastEthernet0/0:
-   Use the 100 Base-TX (RJ-45) connector? [yes]:
+   Use the 100 Base-TX (RJ-45) connector? [yes]:<input>yes</input>
-   Operate in full-duplex mode? [no]: yes
+   Operate in full-duplex mode? [no]: <input>yes</input>
-   Configure IP on this interface? [yes]:
+   Configure IP on this interface? [yes]:<input>yes</input>
-     IP address for this interface: 192.168.22.1
+     IP address for this interface: <input>192.168.22.1</input>
-     Subnet mask for this interface [255.255.255.0] :
+     Subnet mask for this interface [255.255.255.0] :<input>255.255.255.0</input>
      Class C network is 192.168.22.0, 24 subnet bits; mask is /24
@@ Line 125: / Line 125: @@
 [2] Save this configuration to nvram and exit.
-Enter your selection [2]:2
+Enter your selection [2]:<input>2</input>
-</pre>
+</source>
 =Setup step 2=
 == FastEthernet 0/1 ==
 Now we need to configure ''fastethernet0/1''
-<pre style="margin: 10px 75px;">
+<source lang=cli>
-Viborg1#configure terminal
+Viborg1><input>enable</input>
 Enter configuration commands, one per line.  End with CNTL/Z.
-Viborg1(config)#interface FastEthernet0/1
+Viborg1(config)#<input>interface FastEthernet0/1</input>
-Viborg1(config-if)#ip address 172.16.0.1 255.255.0.0
+Viborg1(config-if)#<input>ip address 172.16.0.1 255.255.0.0</input>
-Viborg1(config-if)#no shutdown
+Viborg1(config-if)#<input>no shutdown</input>
-Viborg1(config-if)#CTRL-Z
+Viborg1(config-if)#<input>CTRL-Z</input>
-</pre>
+</source>
 == Loopback 0 ==
 And the ''loopback0'' interface
-<pre style="margin: 10px 75px;">
+<source lang=cli>
-Viborg1#configure terminal
+Viborg1#<input>configure terminal</input>
-Viborg1(config)#interface loopback 0
+Viborg1(config)#<input>interface loopback 0</input>
-Viborg1(config-if)#ip address 10.10.10.1 255.255.255.255
+Viborg1(config-if)#<input>ip address 10.10.10.1 255.255.255.255</input>
-Viborg1(config-if)#no shutdown
+Viborg1(config-if)#<input>no shutdown</input>
-Viborg1(config-if)#CTRL-Z
+Viborg1(config-if)#<input>CTRL-Z</input>
-</pre>
+</source>
 == Enabling RIP ==
 Now the ''rip'' routing protocol
-<pre style="margin: 10px 75px;">
+<source lang=cli>
-Viborg1#configure terminal
+Viborg1#<input>configure terminal</input>
-Viborg1(config)#ip routing
+Viborg1(config)#<input>ip routing</input>
-Viborg1(config)#router rip
+Viborg1(config)#<input>router rip</input>
-Viborg1(config-router)#version 2
+Viborg1(config-router)#<input>version 2</input>
-Viborg1(config-router)#network 192.168.22.0
+Viborg1(config-router)#<input>network 192.168.22.0</input>
-Viborg1(config-router)#network 172.16.0.0
+Viborg1(config-router)#<input>network 172.16.0.0</input>
-Viborg1(config-router)#network 10.0.0.0
+Viborg1(config-router)#<input>network 10.0.0.0</input>
-Viborg1(config-router)#CTRL-Z
+Viborg1(config-router)#<input>CTRL-Z</input>
-</pre>
+</source>
 {{Source cli}}
 [[Category:Cisco]][[Category:CCNA]][[Category:IOS]][[Category:Network]]

@@ Line 1: / Line 1: @@
 [[Image:Puttyserial.png|right|500px|thumb|Picture 1: Putty serial communication]]
-{{#css:
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 *[[Cisco basic configuration | Læs denne artikel på dansk]]
@@ Line 163: / Line 160: @@
 Viborg1(config-router)#CTRL-Z
 </pre>
 [[Category:Cisco]][[Category:CCNA]][[Category:IOS]][[Category:Network]]

@@ Line 4: / Line 4: @@
      pre {  font-weight: bold; font-size: 150%; color: #00FF00; background: black;}
 }}
 In this example we will configure a Cisco 2621XM Router
 *hostname Viborg1