1 © 2004, Cisco Systems, Inc. All rights reserved. CCNA 2 v3.1 Module 4 Learning About Other Devices.

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Presentation transcript:

1 © 2004, Cisco Systems, Inc. All rights reserved. CCNA 2 v3.1 Module 4 Learning About Other Devices

222 © 2004, Cisco Systems, Inc. All rights reserved. Cisco Discovery Protocol (CDP) CDP is media and protocol independent, and runs on all Cisco equipment over the Subnetwork Access Protocol (SNAP).

333 © 2004, Cisco Systems, Inc. All rights reserved. Showing CDP Neighbor Entries

444 © 2004, Cisco Systems, Inc. All rights reserved. Implementation, Monitoring, and Maintenance of CDP

555 © 2004, Cisco Systems, Inc. All rights reserved. The show cdp interface Command

666 © 2004, Cisco Systems, Inc. All rights reserved. The show cdp neighbors Command

777 © 2004, Cisco Systems, Inc. All rights reserved. Creating a Network Map The show cdp neighbors [type number] [detail] command can be used to obtain the following: Device ID — Address Port ID — Capabilities Version — Platform IP network prefix VTP management domain name (CDPv2 only) Native VLAN (CDPv2 only) Full/Half duplex (CDPv2)

888 © 2004, Cisco Systems, Inc. All rights reserved. Disabling CDP

999 © 2004, Cisco Systems, Inc. All rights reserved. Troubleshooting CDP

10 © 2004, Cisco Systems, Inc. All rights reserved. The show cdp traffic Command

11 © 2004, Cisco Systems, Inc. All rights reserved. Telnet

12 © 2004, Cisco Systems, Inc. All rights reserved. Telnet Operations

13 © 2004, Cisco Systems, Inc. All rights reserved. Establishing Telnet Connections To initiate a Telnet session any of the following alternatives can be used: Denver>connect paris Denver>paris Denver> Denver>telnet paris A hostname table or access to DNS for Telnet must be present for a name to work. Otherwise, the IP address of the remote router must be entered. Telnet can be used to determine if a remote router can be accessed.

14 © 2004, Cisco Systems, Inc. All rights reserved. Telnet Operations

15 © 2004, Cisco Systems, Inc. All rights reserved. Advanced Telnet Operation Multiple Telnet sessions can be used and suspended with the Ctrl+Shift+6 then x sequence.

16 © 2004, Cisco Systems, Inc. All rights reserved. Testing with the ping Command

17 © 2004, Cisco Systems, Inc. All rights reserved. Testing with the traceroute Command

18 © 2004, Cisco Systems, Inc. All rights reserved. Troubleshooting IP Addressing Issues

19 © 2004, Cisco Systems, Inc. All rights reserved. Summary