1 / 21

Introduction to Routing and Packet Forwarding

Learn the basics of configuring a Cisco IOS device using the Command Line Interface (CLI). Topics include addressing, password configuration, banner messaging, interface configuration, and verifying and saving the configuration.

ezrac
Download Presentation

Introduction to Routing and Packet Forwarding

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction to Routing and Packet Forwarding CLI Configurationand Addressing

  2. Populating an Address Table

  3. Accessing a Cisco IOS DeviceConsole Access Method Most common methods to access the CLI: • Console • Telnet or SSH • AUX port

  4. Basic Router Configuration • When configuring a router, begin with performing certain basic tasks. • Naming the router. • Setting passwords. • Configuring a banner. • Configuring interfaces. • Verifying basic configuration and router operations. • Saving changes on a router.

  5. Basic Router Configuration

  6. Basic Router Configuration

  7. Basic Router Configuration • User and Privileged Modes: • Configure Host Name: Router> user mode Router> enable Router# privilege mode Router# configure terminal Router(config)# exit Router# config t Router(config)# hostname [name]

  8. Basic Router Configuration • Configure Passwords: Privilege password: Router(config)# enable secret [password] Console password: Router(config)# line console 0 Router(config-line)# password [password]Router(config-line)# login Telnet password: Router(config)# line vty 0 4 Router(config-line)# password [password] Router(config-line)# login

  9. Limiting Access to Device ConfigurationsEncrypting Password Display S1(config)#service password-encryption

  10. Basic Router Configuration • Configure Banner Message of the Day: • In the real world, probably a good idea. • Scheduled down time, etc. • In the lab, not necessary unless specifically instructed to do so. Router(config)# banner motd [# message #]

  11. Basic Router Configuration • Configure Interfaces: • Each interface MUST belong to a different network. Router(config)# interface [type][number] Router(config-if)# ip address [address] [mask] Router(config-if)# description [description] Router(config-if)# no shutdown

  12. Basic Router Configuration • Verifying the Configuration: • Saving the Configuration: Router# show running-config Router# show ip route Router# show ip interface brief Router# show interfaces Router# copy running-config startup-config

  13. Basic Router Configuration

  14. Basic Router Configuration – R1 • Configure Host Name: Router> Router>enable Router# Router#configure terminal Router(config)#hostname R1 R1(config#)

  15. Basic Router Configuration – R1 • Configure Privilege Password: R1(config#)enable secret class

  16. Basic Router Configuration – R1 • Configure Passwords: R1(config)#line console 0 R1(config-line)#password cisco R1(config-line)#login R1(config)#line vty 0 4 R1(config-line)#password cisco R1(config-line)#login R1(config-line)#exit R1(config)#service password-encryption

  17. Basic Router Configuration – R1 • Configure Banner Message of the Day: • Enter a text message. End with the character‘#’. R1(config)#banner motd # ****************************************** WARNING!! Unauthorized Access Prohibited!! ****************************************** # R1(config)#

  18. Basic Router Configuration – R1 • WAN Interface Configuration: R1(config)#interface Serial0/0/0 R1(config-if)#ip address 192.168.2.1 255.255.255.0 R1(config-if)#description Link to R2 R1(config-if)#clockrate 64000 (DCE Only) R1(config-if)#no shutdown

  19. Basic Router Configuration – R1 • LAN Interface Configuration: R1(config)#interface FastEthernet0/0 R1(config-if)#ip address 192.168.1.1 255.255.255.0 R1(config-if)#description R1 LAN R1(config-if)#no shutdown

  20. Basic Router Configuration – R1 • Each Interface Belongs to a Separate Network: R1(config)#interface FastEthernet0/1 R1(config-if)#ip address 192.168.1.2 255.255.255.0 192.168.1.0 overlaps with FastEthernet0/0 R1(config-if)#no shutdown 192.168.1.0 overlaps with FastEthernet0/0 FastEthernet0/1: incorrect IP address assignment

  21. The Command StructureHot Keys and Shortcuts • Tab –Completes the remainder of a partially typed command or keyword. • Ctrl-R –Redisplays a line. • Ctrl-A – Moves to the beginning of the line. • Ctrl-Z –Exits the configuration mode and returns to user EXEC. • Down Arrow –Allows the user to scroll forward through former commands. • Up Arrow –Allows the user to scroll backward through former commands. • Ctrl-shift-6 –Allows the user to interrupt an IOS process such as ping ortraceroute. • Ctrl-C – Exits the current configuration or aborts the current command.

More Related