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What does the output of "arp -a" on Windows mean?

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When I run the command "arp -a" in command prompt. I receive interface address and three columns namely Internet Address, Physical Address and Type. What does each of them mean?

Type has only two values: dynamic and static. Can you please explain the difference between them as well

anonymous user
asked 2018-11-11 00:50:35 +0000
Guy Harris's avatar
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Guy Harris
updated 2018-11-11 08:03:48 +0000
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Does your OS document the arp command?

If so, does its documentation answer your questions?

Guy Harris's avatar Guy Harris (2018-11-11 01:13:41 +0000) edit
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It gives me a list of Internet Addresses, a list of physical address, and the type. I just want to know that how are the two addresses related and what's the difference between dynamic and static type.

slim_shaddy's avatar slim_shaddy (2018-11-11 01:55:51 +0000) edit
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What operating system is this?

Guy Harris's avatar Guy Harris (2018-11-11 03:06:15 +0000) edit
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Microsoft Windows

slim_shaddy's avatar slim_shaddy (2018-11-11 03:50:50 +0000) edit
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1 Answer

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On Windows, the output from the arp -a command shows:

  • Internet Address - the Internet address whose MAC address is being displayed
  • Physical Address - the MAC address corresponding to that Internet address
  • Type - "Dynamic" if the entry was filled in from an ARP packet, "Static" if it was manually filled in, e.g. with an arp /s command.
Guy Harris's avatar
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Guy Harris
answered 2018-11-11 08:02:45 +0000
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