Is Address Resolution Protocol (ARP) a routing protocol?

[vickieonthego]

Is address resolution protocol (ARP) a routing protocol?

thanks

 

[John Wunderlich]

(e-mail address removed) wrote in @g4g2000hsf.googlegroups.com:

Is address resolution protocol (ARP) a routing protocol?

No.

ARP solves the dilema where all packets are moved around using Ethernet
packets which use 48-bit Ethernet/MAC addresses (xx:xx:xx:xx:xx:xx) to
find a destination device. TCP/IP knows of only 32-bit IP addresses,
so ARP allows a device to broadcast on the local subnet with a message
that effectively says "Will the device at IP address yy.yy.yy.yy please
send me your Ethernet address so we can talk".

For more info, read RFC 826
<http://www.faqs.org/rfcs/rfc826.html>

HTH,
John

 

[Jim]

(e-mail address removed) wrote in @g4g2000hsf.googlegroups.com:


No.

ARP solves the dilema where all packets are moved around using Ethernet
packets which use 48-bit Ethernet/MAC addresses (xx:xx:xx:xx:xx:xx) to
find a destination device. TCP/IP knows of only 32-bit IP addresses,
so ARP allows a device to broadcast on the local subnet with a message
that effectively says "Will the device at IP address yy.yy.yy.yy please
send me your Ethernet address so we can talk".

For more info, read RFC 826
<http://www.faqs.org/rfcs/rfc826.html>

HTH,
John

And then there is the RARP protocol which says: "Will the device at
Ethernet address "blah blah blah" please use
the IP address yy.yy.yy.yy so we can talk".

Jim

 

[Guest]

To see what arp is all about, you should look into the tables it stores in
memory.
Arp tables are not in files, are in RAM, in change over time.
To get a snapshot of the table, open a DOS Window and type the command:
arp -a

You should see the table