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Learning About other Devices

Learning About other Devices. Module 4. Cisco Discovery Protocol. _____________________________ Layer _____________________ Though it shows L3 IP information Works only on ________________ ___________________________________________________________________

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Learning About other Devices

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  1. Learning About other Devices Module 4

  2. Cisco Discovery Protocol • _____________________________ • Layer _____________________ • Though it shows L3 IP information • Works only on ________________ ___________________________________________________________________ • Enables network administrators to access a summary of what other device’s configurations look like • Allows admin to _______________________

  3. CDP cont… • CDP ________________________ to directlyconnected neighboring Cisco device • Advertisement contains, in part, ____ ____________________________ the following info: • __________________ • __________________ • __________- _______________________ _________________________________________________________________ • __________________ , etc.

  4. CDP cont… • CDP _____________________ upon boot up of Cisco device (IOS version 10.3 – 12) • _____________________________ ___________________________ • To disable CDP at the ___________, • Router(_________)# no CDP _______(in global configuration mode) • To disable CDP on a _____________ • Router(_____________)# no CDP ______(in interface configuration mode)

  5. Common commands • Router# show cdp neighbors • Router# show cdp neighbors detail • Router# cdp timer –specifies how often IOS sends CDP updates • Router# show cdp traffic Know the difference in the show cdp commands and the troubleshooting commands

  6. Basic Network Testing

  7. Telnet, ping and trace Most complete test mechanism available. Tests all 7 layers Tests connectivity up to layer 3

  8. Telnet • In addition to being a complete testing method… • _____________________________ _____________________________ • Used from either the ___________ ____________________________ • How many simultaneous incoming Telnet sessions can be opened? • Can be used in ________________ __________________________________________________________

  9. Telnet Continued • Methods of telneting into Paris router • Denver>Denver>Denver>Denver> • Inability to Telnet could be caused by one of the following: • VTY not set correctly on telneted device • Suspend feature- Press • Continue previous Telnet session – • Resume command- ________________ ________________________________

  10. Ping– A review • The ping command sends _______ ____________________________________________________________________________________________________________________ • What indicates a successful echo? • What does a period (.) indicate?

  11. Traceroute- A review • Used for ______________________ _________________________________________________________ • If a routers is unreachable, _______ ____________________________ instead of the name of the router • Can be used for the ____________ __________________________________________________________

  12. Labs for Mod 4 • Reminder: Pre-reading and thoughtful answering of lab questions is crucial to understanding and memorizing IOS commands • Labs: • Creating a Network Map Using CDP • Using CDP commands • Establishing and Verifying a Telnet Connection • Suspending and Disconnecting Telnet Sessions • Advanced Telnet Operations • Connectivity Tests- Ping • Connectivity Tests- Traceroute

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