Talk:Proxy ARP: Difference between revisions

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I made a couple changes to help clear up the intro a little bit, per the below concern. To answer your technical concern: The issue you raise is not valid. Proxy ARP is not necessary for devices on the same ethernet network, because on a standard ethernet if two devices are in the same subnet and one sends an ARP for the other, the intended device is more than willing to respond to that ARP request directly. Proxy ARP works when a router or server sits between two networks, and has a MAC entry that matches the ARP request. It supplies it's own MAC address in response to the request, and simply routes the traffic to the correct destination. I hope that clears up some of the confusion. ~mtzweil

Could the opening sentence be any less clear?

In the introduction section it says proxy arp is used to communicate between two different networks. I think it is wrong. ARP is used only within the same subnet. If Host A wants to reach Host B on a different network, it will arp for the gateways ip address and not for Host B's address. —Preceding unsigned comment added by Sanjaysr (talk • contribs) 14:56, 20 March 2008 (UTC) —Preceding unsigned comment added by 122.164.54.124 (talk) [reply]

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-Could the opening sentence be any less clear?
+I made a couple changes to help clear up the intro a little bit, per the below concern.  To answer your technical concern: The issue you raise is not valid.  Proxy ARP is not necessary for devices on the same ethernet network, because on a standard ethernet if two devices are in the same subnet and one sends an ARP for the other, the intended device is more than willing to respond to that ARP request directly.  Proxy ARP works when a router or server sits between two networks, and has a MAC entry that matches the ARP request.  It supplies it's own MAC address in response to the request, and simply routes the traffic to the correct destination.  I hope that clears up some of the confusion.  ~mtzweil
-In the introduction section it says proxy arp is used to communicate between two different networks. I think it is wrong. ARP is used only within the same subnet. If Host A wants to reach Host B on a different network, it will arp for the gateways ip address and not for Host B's address.  <small>—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Sanjaysr|Sanjaysr]] ([[User talk:Sanjaysr|talk]] • [[Special:Contributions/Sanjaysr|contribs]]) 14:56, 20 March 2008 (UTC)</small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
+Could the opening sentence be any less clear?
 In the introduction section it says proxy arp is used to communicate between two different networks. I think it is wrong. ARP is used only within the same subnet. If Host A wants to reach Host B on a different network, it will arp for the gateways ip address and not for Host B's address.  <small>—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Sanjaysr|Sanjaysr]] ([[User talk:Sanjaysr|talk]] • [[Special:Contributions/Sanjaysr|contribs]]) 14:56, 20 March 2008 (UTC)</small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/122.164.54.124|122.164.54.124]] ([[User talk:122.164.54.124|talk]]) </span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->