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| Newer page: | version 3 | Last edited on Thursday, September 23, 2004 6:52:26 pm | by AristotlePagaltzis | |
| Older page: | version 2 | Last edited on Thursday, September 23, 2004 5:46:35 pm | by PerryLorier | Revert |
@@ -1,13 +1,12 @@
-ARP is the Address Resolution Protocol, that enables a
[IP
] conversation to occur over an Ethernet network
.
+An
[Acronym
] for __A__ddress __R__esolution __P__rotocol
.
-IP (version 4) uses 32-bit addresses, usually displayed in a dotted quad format, "
nnn.nnn.nnn.nnn"
.
+A protocol that enables a [IP] conversation to occur over an [Ethernet] network. [
IP]
(version 4) uses 32-bit addresses, usually displayed in a dotted quad format, <tt>
nnn.nnn.nnn.nnn</tt>
. [Ethernet] uses 48-bit addresses, known as [MAC] addresses, usually displayed as a 17-character colon-delimited hex string, <tt>nn:nn:nn:nn:nn:nn</tt>. (A real example: my workstation has the IP address <tt>192.168.1.46</tt> and a MAC address of <tt>00:50:FC:B1:21:C7</tt>)
-[Ethernet] uses 48-bit addresses
, known as
[MAC] addresses
, usually displayed
as a 17-character colon-delimited hex string,
"nn:nn:nn:nn:nn:nn
"
+In order to send an [IP] packet over
[Ethernet], your computer needs to associate a
[MAC] address with the requested [IP] address. It does this by sending an [Ethernet] Broadcast packet, using the [ARP] protocol. This packet basically says "What [MAC] address is associated with this [IP] address?"
, sometimes referred to
as a "who-has?
" request.
-(A real example - my
workstation has
the IP address "192.168.1.46"
and a
MAC address of "00:50:FC:B1:21:C7")
+Although any
workstation on
the local [Ethernet] is capable of sending a response, usually it is only the actual workstation you wish to communicate with that bothers to reply, providing both its [
IP]
address and its [
MAC]
address.
-In order
to send
an IP packet over Ethernet, your computer needs to associate a MAC address with the requested IP address. It does this by sending an Ethernet Broadcast packet, using the
ARP protocol. This packet basically says "What MAC address is associated with this IP address?", sometimes referred to as a "who-has?" request
.
+To issue a gratuatis [ARP]
to flush
an [
ARP] cache use arping(8)
.
-Although any workstation on the local Ethernet is capable of sending a response, usually it is only the actual workstation you wish to communicate with that bothers to reply, providing both its IP address and its MAC address.
-
-To issue a gratuatis arp to flush an arp cache use arping(8)
+----
+CategoryProtocols
