Transcript CCNA 2 Module 4 Learning about Other Devices

CCNA 2 v3.0 Module 4
Learning About Other Devices
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Objectives
• Discovering and connecting to neighbors
• Getting information about remote devices
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Discovering and connecting to neighbors
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Cisco Discovery Protocol (CDP)
CDP is media and protocol independent, and runs
on all Cisco equipment over the Subnetwork
Access Protocol (SNAP).
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Showing CDP Neighbor Entries
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Implementation, Monitoring, and
Maintenance of CDP
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The show cdp interface Command
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The show cdp neighbors Command
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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)
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Disabling CDP
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Troubleshooting CDP
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Getting information about remote devices
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Telnet
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Telnet Operations
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Establishing Telnet Connections
• A host name table or access to DNS for
Telnet must be present for a name to
work. Otherwise, the IP address of the
host must be entered.
• Denver>connect paris
Denver>paris
Denver>131.108.100.152
Denver>telnet paris
• Telnet can be used to perform a test to
determine whether access can be
obtained from a remote router.
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Telnet Operations
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Advanced Telnet Operation
Multiple Telnet sessions can be used and
suspended by using the Ctrl+Shift+6 and x
sequence.
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Testing with the ping Command
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Testing with the traceroute
Command
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Troubleshooting IP Addressing Issues
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