What Is Proxy ARP? | Proxy ARP Example

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Couldn't be any clearer than that! Thanks again!

enricoheise
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Helped a lot getting things clearer. thanks man 🙏

HolyManSlayer
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Great work. thanks for your flawless explanations, that made me crystal clear about proxy arp.

SajadAhmadi-uoth
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Thanks for this. I knew what proxy ARP was, but I did not understand why it existed or what it was trying to accomplish. So, it looks like it is to help with incorrectly configured hosts. I'm not sure that is a good thing or not. As a network admin, I think I would rather know that there was a problem rather than silently having it fixed.

bendono
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Great and short explanation!
I do have two questions:

1) Does the ARP proxy works only to the directly connected subnets or can it work through other routers? Like, if we have 3 subnets 10.1.0.0, 10.2.0.0 and 10.3.0.0 and 2 routers in-between.

If router that is not directly connected to the 10.3.0.0, but it has routing entry for 10.3.0.0 subnet, would it proxy ARP?

2) Does Proxy ARP works if 2 hosts are misconfigured and can Proxy ARP work not only between usual hosts, but routers as well?


Thank you!

vladislavkaras
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Thanks for the video. I see a lot of explanations of Proxy ARP that use the same example of the host misconfiguration. To the point that I am starting to think that the only purpose of Proxy ARP was to address such issues. Are there any other scenarios? Please don't get me wrong, I am truly curious. I just had a bizarre anomaly, and I am thinking that the Proxy ARP has something to do with it. Trying to understand a broader set of use cases involving Proxy ARP.

_m.a-x