Instructor  & Todd Lammle Sybex CCNA 640-802 Chapter 4: Cisco’s IOS and SDM
Chapter 4 Objectives <ul><li>The Cisco router IOS </li></ul><ul><li>Enhanced editing </li></ul><ul><li>Administrative func...
Cisco Router IOS <ul><li>Carries network protocols and functions </li></ul><ul><li>Connects high-speed traffic between dev...
Connecting To A Cisco Router Cisco 2811 Cisco 1841
Bringing up a Router <ul><li>Boot-up process: </li></ul><ul><ul><li>1: POST </li></ul></ul><ul><ul><li>2: Looks for the Ci...
Setup Mode <ul><li>Basic Management Setup </li></ul><ul><li>Extended Setup </li></ul><ul><li>Command-Line Interface </li><...
Command-Line Interface (CLI) <ul><li>More flexible than setup mode. </li></ul><ul><li>To use the CLI, just say No to enter...
Logging into the Router <ul><li>User mode:  </li></ul><ul><ul><li>Router> </li></ul></ul><ul><ul><li>Used mostly to view s...
Overview of Router Modes <ul><li>Global changes: </li></ul><ul><ul><li>config terminal  or  config t </li></ul></ul><ul><u...
Configuration <ul><li>CLI Prompts </li></ul><ul><li>Interfaces </li></ul><ul><li>Sub-interfaces </li></ul><ul><li>Line Com...
Editing & Help Features
Editing & Help Features <ul><li>Commands starting with a certain letter </li></ul><ul><ul><ul><li>Router# c? </li></ul></u...
Enhanced Editing Commands
Enhanced Editing Commands (cont.)
Router Command History
Gathering Basic Routing Information
Administrative Functions <ul><li>The administrative functions that you can configure on a router and switch are </li></ul>...
Hostnames & Descriptions <ul><li>Hostnames </li></ul><ul><ul><ul><li>Router(config)# hostname todd </li></ul></ul></ul><ul...
Banners <ul><li>Purpose </li></ul><ul><li>Types </li></ul><ul><ul><li>exec </li></ul></ul><ul><ul><li>incoming </li></ul><...
Setting the Passwords <ul><li>5 passwords: </li></ul><ul><ul><li>1st  two  used to set your  enable  password </li></ul></...
Passwords <ul><li>Enable passwords </li></ul><ul><ul><ul><li>Router(config)# enable password cisco </li></ul></ul></ul><ul...
Interface Descriptions <ul><li>Setting descriptions on an interface is helpful to the administrator and, like the hostname...
Router Interfaces <ul><li>Bringing up an Interface </li></ul><ul><ul><ul><li>no shutdown </li></ul></ul></ul><ul><ul><ul><...
Viewing, & Saving Configurations <ul><li>Viewing & Saving Configurations </li></ul><ul><ul><li>running-config  saved in  D...
Verifying Your Configuration <ul><li>Tools: </li></ul><ul><ul><li>show running-config </li></ul></ul><ul><ul><li>show star...
Other Verification Methods <ul><li>Verifying with the  show interface  command </li></ul><ul><ul><li>Router# show interfac...
Summary <ul><li>Go through all the written labs and review questions </li></ul><ul><li>Review answers in class </li></ul>
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Chapter4ccna

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Chapter4ccna

  1. 1. Instructor & Todd Lammle Sybex CCNA 640-802 Chapter 4: Cisco’s IOS and SDM
  2. 2. Chapter 4 Objectives <ul><li>The Cisco router IOS </li></ul><ul><li>Enhanced editing </li></ul><ul><li>Administrative functions </li></ul><ul><ul><li>Hostnames </li></ul></ul><ul><ul><li>Banners </li></ul></ul><ul><ul><li>Passwords </li></ul></ul><ul><ul><li>Interface descriptions </li></ul></ul><ul><li>Verifying your configuration </li></ul>
  3. 3. Cisco Router IOS <ul><li>Carries network protocols and functions </li></ul><ul><li>Connects high-speed traffic between devices </li></ul><ul><li>Adds security to control access </li></ul><ul><li>Provides scalability for growth </li></ul><ul><li>Supplies reliability </li></ul>
  4. 4. Connecting To A Cisco Router Cisco 2811 Cisco 1841
  5. 5. Bringing up a Router <ul><li>Boot-up process: </li></ul><ul><ul><li>1: POST </li></ul></ul><ul><ul><li>2: Looks for the Cisco IOS from Flash memory </li></ul></ul><ul><ul><li>3: IOS loads & looks for a valid configuration; </li></ul></ul><ul><ul><ul><li>startup-config </li></ul></ul></ul><ul><ul><ul><li>stored in nonvolatile RAM (NVRAM) </li></ul></ul></ul><ul><ul><li>4: If a valid config is not found in NVRAM: </li></ul></ul><ul><ul><ul><li>setup mode </li></ul></ul></ul>
  6. 6. Setup Mode <ul><li>Basic Management Setup </li></ul><ul><li>Extended Setup </li></ul><ul><li>Command-Line Interface </li></ul>
  7. 7. Command-Line Interface (CLI) <ul><li>More flexible than setup mode. </li></ul><ul><li>To use the CLI, just say No to entering the initial configuration dialog. </li></ul>
  8. 8. Logging into the Router <ul><li>User mode: </li></ul><ul><ul><li>Router> </li></ul></ul><ul><ul><li>Used mostly to view statistics </li></ul></ul><ul><li>Privileged mode: </li></ul><ul><ul><li>Router# </li></ul></ul><ul><ul><li>Used to view & change router configuration </li></ul></ul>
  9. 9. Overview of Router Modes <ul><li>Global changes: </li></ul><ul><ul><li>config terminal or config t </li></ul></ul><ul><ul><li>Changes made to running-config (DRAM) </li></ul></ul><ul><ul><li>To change the startup-config (NVRAM) </li></ul></ul><ul><ul><ul><li>config memory or config mem </li></ul></ul></ul><ul><li>Note: Any configuration changes need to be placed into RAM. Typing config mem or config net (from a TFTP host) will append the current running-config </li></ul>
  10. 10. Configuration <ul><li>CLI Prompts </li></ul><ul><li>Interfaces </li></ul><ul><li>Sub-interfaces </li></ul><ul><li>Line Commands </li></ul><ul><li>Routing Protocol Configurations </li></ul>
  11. 11. Editing & Help Features
  12. 12. Editing & Help Features <ul><li>Commands starting with a certain letter </li></ul><ul><ul><ul><li>Router# c? </li></ul></ul></ul><ul><ul><ul><li>clear clock configure connect copy </li></ul></ul></ul><ul><li>Enhanced Editing Commands </li></ul><ul><li>Router-Command History </li></ul><ul><li>Gathering Basic Routing Information </li></ul><ul><ul><li>show version </li></ul></ul>
  13. 13. Enhanced Editing Commands
  14. 14. Enhanced Editing Commands (cont.)
  15. 15. Router Command History
  16. 16. Gathering Basic Routing Information
  17. 17. Administrative Functions <ul><li>The administrative functions that you can configure on a router and switch are </li></ul><ul><li>Hostnames </li></ul><ul><li>Banners </li></ul><ul><li>Password </li></ul><ul><li>Interface descriptions </li></ul>
  18. 18. Hostnames & Descriptions <ul><li>Hostnames </li></ul><ul><ul><ul><li>Router(config)# hostname todd </li></ul></ul></ul><ul><ul><ul><li>todd(config)# </li></ul></ul></ul><ul><li>Descriptions </li></ul><ul><ul><ul><li>Atlanta(config)# int e0 </li></ul></ul></ul><ul><ul><ul><li>Atlanta(config-if)# description Sales Lan </li></ul></ul></ul>
  19. 19. Banners <ul><li>Purpose </li></ul><ul><li>Types </li></ul><ul><ul><li>exec </li></ul></ul><ul><ul><li>incoming </li></ul></ul><ul><ul><li>login </li></ul></ul><ul><ul><li>motd </li></ul></ul><ul><li>Delimiting character </li></ul>
  20. 20. Setting the Passwords <ul><li>5 passwords: </li></ul><ul><ul><li>1st two used to set your enable password </li></ul></ul><ul><ul><ul><li>Used to secure privileged mode; Router>enable </li></ul></ul></ul><ul><ul><li>Other three are used to configure a password in user mode via: </li></ul></ul><ul><ul><ul><li>console port </li></ul></ul></ul><ul><ul><ul><li>auxiliary port </li></ul></ul></ul><ul><ul><ul><li>Telnet </li></ul></ul></ul>
  21. 21. Passwords <ul><li>Enable passwords </li></ul><ul><ul><ul><li>Router(config)# enable password cisco </li></ul></ul></ul><ul><ul><ul><li>Router(config)# enable secret cisco </li></ul></ul></ul><ul><li>Auxiliary Password </li></ul><ul><li>Console Password </li></ul><ul><li>Telnet Password </li></ul><ul><li>Encrypting Your Password </li></ul><ul><ul><ul><li>Router(config)# service password-encryption </li></ul></ul></ul>
  22. 22. Interface Descriptions <ul><li>Setting descriptions on an interface is helpful to the administrator and, like the hostname, only locally significant. The description command is a helpful one because you can, for instance, use it to keep track of circuit numbers. </li></ul><ul><li>Here’s an example: </li></ul><ul><ul><li>Atlanta(config)# int e0 </li></ul></ul><ul><ul><li>Atlanta(config-if)# description Sales Lan </li></ul></ul><ul><ul><li>Atlanta(config-if)# int s0 </li></ul></ul><ul><ul><li>Atlanta(config-if)# desc Wan to Miami circuit:6fdda4321 </li></ul></ul><ul><li>You can view the description of an interface either with the show running-config command or the show interface command. </li></ul>
  23. 23. Router Interfaces <ul><li>Bringing up an Interface </li></ul><ul><ul><ul><li>no shutdown </li></ul></ul></ul><ul><ul><ul><li>shutdown </li></ul></ul></ul><ul><ul><ul><li>show interface </li></ul></ul></ul><ul><li>Configuring an IP Address on an Interface </li></ul><ul><ul><ul><li>Router(config)# int e0 </li></ul></ul></ul><ul><ul><ul><li>Router(config-if)# ip address 172.16.10.2 255.255.255.0 </li></ul></ul></ul><ul><ul><ul><li>Router(config-if)# no shut </li></ul></ul></ul><ul><li>Serial Interface Commands </li></ul><ul><ul><ul><li>clock rate & bandwidth (entered in kilobits ) </li></ul></ul></ul>
  24. 24. Viewing, & Saving Configurations <ul><li>Viewing & Saving Configurations </li></ul><ul><ul><li>running-config saved in DRAM </li></ul></ul><ul><ul><li>startup-config saved in NVRAM </li></ul></ul><ul><ul><ul><li>copy run start </li></ul></ul></ul><ul><ul><ul><li>sh run </li></ul></ul></ul><ul><ul><ul><li>sh start </li></ul></ul></ul><ul><ul><ul><li>erase startup-config </li></ul></ul></ul>
  25. 25. Verifying Your Configuration <ul><li>Tools: </li></ul><ul><ul><li>show running-config </li></ul></ul><ul><ul><li>show startup-config </li></ul></ul><ul><ul><li>ping </li></ul></ul><ul><ul><li>show cdp nei detail </li></ul></ul><ul><ul><li>trace </li></ul></ul><ul><ul><li>telnet </li></ul></ul>
  26. 26. Other Verification Methods <ul><li>Verifying with the show interface command </li></ul><ul><ul><li>Router# show interface ? </li></ul></ul><ul><li>Verifying with the show ip interface command </li></ul><ul><ul><li>Router# show ip interface </li></ul></ul><ul><ul><li>Router# show ip interface brief </li></ul></ul><ul><ul><li>Router# show controllers </li></ul></ul>
  27. 27. Summary <ul><li>Go through all the written labs and review questions </li></ul><ul><li>Review answers in class </li></ul>
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