Frequently Asked Questions

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A great question I was asked in class was:

"If Neighbor Discovery processes have replaced ARP in ICMPv6, how do you look at the equivalent of the ARP cache?"

Great question.

Here is the answer for Windows:

  1. Click START> RUN> and type cmd in the box to open Command Prompt. in your Windows environment.
  2. Type netsh at the command prompt, and then press ENTER.
  3. Now type interface ipv6, and then press ENTER.
  4. Lastly, type show neighbors, and then press ENTER.

Here is a sample output (though I was not connected to an IPv6 network):

Here is a Windows example output on Windows 10 connected to an IPv6 network (it is long):

win10ipv6ndtable

For Linux, you can view IPv6 neighbors using the following command:

# ip -6 neighbor show

linuxipv6ndtable

On a MAC, use the following:

Andrews-iMac:~ andrew$ ndp -a

Screen Shot 2018 08 13 at 6.28.27 AM

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