Cisco Router Configuration Tutorial (Part-1)

All the show commands a available in the current mode. Definitely try out the following commands:

Router#show interfaces
Router#show ip protocols
Router#show ipv6 protocols
Router#show ip route
Router#show ipv6 route
Router#show ip arp
Router#show ipv6 neighbors

Global configuration (config)

In the parent mode, you issue the command config.
Router#config
Router(config)#


You do this in configuration mode with the hostname command.

Router(config)#hostname ExampleName
ExampleName(config)#

Another useful command issued from config mode is the command to designate the DNS server to be used by the router:

ExampleName(config)#ip name-server aa.bb.cc.dd
ExampleName(config)#ctrl-Z
ExampleName#

This is also where you set the password for privileged mode.

ExampleName(config)#enable secret examplepassword
ExampleName(config)#ctrl-Z
ExampleName#

Until you hit ctrl-Z (or type exit until you reach parent mode) your command has not been put into affect. You can enter config mode, issue several different commands, then hit ctrl-Z to activate them all. Each time you hit ctrl-Z you return to parent mode and the prompt:

ExampleName#

Configuring Cisco router interfaces

Cisco interface naming is straightforward. Individual interfaces are referred to by this convention:

media type slot#/port#


Therefor, to display the configuration of that interface you use the command:

ExampleName#show interface ethernet 6/2

If your router does not have slots, like a 1600, then the interface name consists only of:

media type port#

For example:

ExampleName#show interface serial 0

Here is an example of configuring a serial port with an IP address:

ExampleName#config
ExampleName(config)#interface serial 1/1
ExampleName(config-if)#ip address 192.168.155.2 255.255.255.0
ExampleName(config-if)#ipv6 address fe80::230:1bff:fe80:b8ea/64
ExampleName(config-if)#ipv6 enable
ExampleName(config-if)#no shutdown
ExampleName(config-if)#ctrl-Z
ExampleName#

Then to verify configuration:

ExampleName#show interface serial 1/1

Configuring Cisco Routing

IP routing is automatically enabled on Cisco routers. If it has been previously disabled on your router, you turn it back on in config mode with the command ip routing.

ExampleName(config)#ip routing
ExampleName(config)#ctrl-Z

To enable IPv6 routing, use the command ipv6 unicast-routing.

ExampleName(config)#ipv6 unicast-routing
ExampleName(config)#ctrl-Z

There are two main ways a router knows where to send packets. The administrator can assign static routes, or the router can learn routes by employing a dynamic routing protocol.

In the Cisco IOS this is done with the ip route and ipv6 route commands.

ExampleName#config
ExampleName(config)#ip route 172.16.0.0 255.255.255.0 192.168.150.1
ExampleName(config)#ctrl-Z
ExampleName#show ip route
ExampleName#config
ExampleName(config)#ipv6 route fe80::230:1bff:fe80::/64 fe80::230:1bff:fe80::1
ExampleName(config)#ctrl-Z
ExampleName#show ipv6 route

Saving your Cisco Router configuration

If you turned the router off right now, and turned it on again, you would have to start configuration over again. Your running configuration is not saved to any perminent storage media. You can see this configuration with the command show running-config.

ExampleName#show running-config

You do want to save your successful running configuration. Issue the command copy running-config startup-config.

ExampleName#copy running-config startup-config

Your configuration is now saved to non-volatile RAM (NVRAM). Issue the command show startup-config.

ExampleName#show startup-config

Now any time you need to return your router to that configuration, issue the command copy startup-config running-config.

ExampleName#copy startup-config running-config

Example Cisco Router configuration

1. Router>enable
2. Router#config
3. Router(config)#hostname N115-7206
4. N115-7206(config)#interface serial 1/1
5. N115-7206(config-if)ip address 192.168.155.2 255.255.255.0
6. N115-7206(config-if)ipv6 address fe80::230:1bff:fe80:b8ea/64
7. N115-7206(config-if)ipv6 enable
8. N115-7206(config-if)no shutdown
9. N115-7206(config-if)ctrl-z
10. N115-7206#show interface serial 1/1
11. N115-7206#config
12. N115-7206(config)#interface ethernet 2/3
13. N115-7206(config-if)#ip address 192.168.150.90 255.255.255.0
14. N115-7206(config-if)#no shutdown
15. N115-7206(config-if)#ctrl-z
16. N115-7206#show interface ethernet 2/3
17. N115-7206#config
18. N115-7206(config)#ip name-server 172.16.0.10
19. N115-7206(config)#ctrl-z
20. N115-7206#ping archie.au
21. N115-7206#config
22. N115-7206(config)#enable secret password
23. N115-7206(config)#ctrl-z
24. N115-7206#copy running-config startup-config
25. N115-7206#exit

Troubleshooting your Cisco router

You are already familiar with the show commands, both specific commands and how to learn what other show commands are available. Some of the most basic, most useful commands you will use for troubleshooting are:

Router#show interfaces
Router#show ip protocols
Router#show ipv6 protocols
Router#show ip route
Router#show ipv6 route
Router#show ip arp
Router#show ipv6 neighbors

References




McAfee Products Removal tool

Affected Operating Systems:
Windows XP
Windows Vista
Windows 7

Step 1 - Uninstall your McAfee consumer products using Add/Remove Programs in the Windows Control Panel
Windows XP

1. Click Start, Settings, Control Panel.
2. Double-click Add or Remove Programs.
3. Select the McAfee SecurityCenter product.
4. Click Remove and follow the steps provided.

Windows Vista \ 7

1. Click Start, Search, type Programs and Features, and click Go.
2. Double-click Programs and Features.
3. Select the McAfee SecurityCenter product.
4. Click Uninstall and follow the steps provided.

Step 2 - Download and run MCPR.exe

1. Download the removal tool from: http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe
2. Click Save and save the file to a folder on your computer.
3. Navigate to the folder where the file was saved.
4. Make sure all McAfee windows are closed.
5. Double-click MCPR.exe to run the removal tool.
   
   NOTE: Windows Vista users must right-click MCPR.exe and select Run as Administrator.
   
6. Restart your computer after receiving the message CleanUp Successful.
   Your McAfee product will not be fully removed until the system is restarted.

If the message Cleanup Unsuccessful is displayed, follow the steps below to view and save your MCPR log files for analysis by Technical Support.

Saving troubleshooting logs

1. On the Cleanup Unsuccessful notification dialog, click View Logs.
2. Your troubleshooting logs will open in a Notepad window. Click File, Save As, and save the file to your Desktop. Name the file MCPR_date.txt (for example: MCPR_Jan10_08.txt).
3. Contact McAfee Technical Support and provide the log file to your technician for troubleshooting.

When all McAfee products are removed from your computer, continue to Step 3.

Step 3 - Reinstall your McAfee Products
NOTE: Refer to the instructions from the partner you purchased your McAfee consumer product from, or reinstall using the following partner links:

• If you purchased your software directly from McAfee, go to https://home.mcafee.com/Secure/Protected/Login.aspx to log in and download your software.
  
• AT&T users should go to https://uversecentral1.att.com/uvp/myhome/mam/ISS/
  
• Cox users should go to http://www.cox.net
  
• DELL users should go to https://us.mcafee.com/root/login.asp?affid=105
  
• MSN users should go to http://membercenter.msn.com
  
• AOL users should search on keyword: Safety (http://daol.aol.com/safetycenter). On the AOL Safety & Security page, click Download Now

Source