Comments on: Traditional ARP

By: himanshi

himanshi — Fri, 29 Sep 2023 09:42:04 +0000

unable to generate interrupt ,and packet is not ready

By: mostafa

mostafa — Sat, 18 Feb 2023 20:02:17 +0000

thanks very much

By: DaVince

DaVince — Wed, 15 Feb 2023 11:33:08 +0000

Wow, kudos to this entire website. I’ve had struggles understanding networking whenever it became relevant on the job, but these articles are very clearly written and quick to read! Thanks for taking the effort writing these articles. I finally know what a broadcast really does. 🙂

By: Rayan K

Rayan K — Mon, 06 Feb 2023 06:05:58 +0000

In reply to Rutvij. Well, that is a well defined question, 2 nodes in between the sender and the receiver. Wont the action be the same here, As the nodes whose mac address doesn't correspond will ignore the ARP and the one on other side which correspond to the mac do reply

By: Ed Harmoush

Ed Harmoush — Sat, 15 Oct 2022 00:08:31 +0000

In reply to Xiaolin. Yes, the target IP/MAC is strictly necessary, that is in fact what provides the answer to the question =). If it were missing, it would be a malformed packet. If it were wrong, it would lead to the wrong MAC address receiving the intended data.

By: Xiaolin

Xiaolin — Mon, 19 Sep 2022 13:49:54 +0000

Great article! I have a small question: In an ARP response, is the target info (MAC, IP) strictly necessary? Anything bad would happen if the target info is wrong or missing?

By: Ed Harmoush

Ed Harmoush — Tue, 03 Aug 2021 23:30:40 +0000

In reply to Marcus. It's not being a smartass to help me ensure I have the best article I can produce. =) Thank you for the corrections, and good catches. I've fixed them both!

By: Ed Harmoush

Ed Harmoush — Tue, 03 Aug 2021 23:22:50 +0000

In reply to Rafael. Typically, yes, that is the behavior I've seen. But all the information is there if an operating system decides to "greedily" learn all ARP entries it can. It is up to the OS to implement ARP how they see fit.

By: Ed Harmoush

Ed Harmoush — Tue, 03 Aug 2021 23:22:10 +0000

In reply to Justin. Yes, traditional ARP occurs in the same network. Proxy ARP is merely Traditional ARP done on behalf of another host (typically in a foreign network). There will be more examples in the Proxy ARP article that follows in the series.

By: Ed Harmoush

Ed Harmoush — Tue, 03 Aug 2021 23:21:27 +0000

In reply to David Koko Kpodi. The OpCode & the Ethernet "EtherType" field 0x0806 will indicate the type of packet.