You cannot ping a directly connected host. Which IOS command can be used to validate Layer 1 and Layer 2 connectivity?

Last Updated: Jan 9, 2023
IT Exam Items Repository › Category: CCNA 2 v7 › You cannot ping a directly connected host. Which IOS command can be used to validate Layer 1 and Layer 2 connectivity?

You cannot ping a directly connected host. Which IOS command can be used to validate Layer 1 and Layer 2 connectivity?

  • ping
  • show cdp neighbors detail
  • show ip interface brief
  • show ip route
  • traceroute

Explanation: The show cdp neighbors command provides a list of directly connected Cisco devices. This command validates Layer 2 (and therefore Layer 1) connectivity. For example, if a neighbor device is listed in the command output, but it cannot be pinged, Layer 3 addressing should be investigated.

Related exam: 16.3.4 Module Quiz - Troubleshoot Static and Default Routes

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