ARP (Address Resolution Protocol)

tookeptookep Member Posts: 7 ■□□□□□□□□□
So, this is the protocol that converts IP addresses into MAC addresses so that the data link layer can understand where the data packets need to go.

Fine.

But at what layer of the OSI model does it operate?

I've had a look around the net but can't find a definite answer.

I'm assuming it's either the network or data link.

Or does it work in between those two?

Comments

  • OpenSourceOpenSource Member Posts: 135
    From what I can recall, the Address Resolution Protocol (ARP) operates at the Network Layer (3rd Layer) of the Open System Interconnect (OSI) Reference Model...

    - Joey
  • tookeptookep Member Posts: 7 ■□□□□□□□□□
    Cheers, I knew it obviously had to be one of them. Just wanted clarification.
  • keatronkeatron Security Tinkerer Member Posts: 1,213 ■■■■■■□□□□
    Well, in actuality, it really operates between layers 3 and 2. Think in terms of the upper part (or Logical Link Control) of Layer 2 and the lower part of Layer 3. In reality IP addresses are logical (LLC) and MAC addresses are said to be physical.
  • cairtakercairtaker Member Posts: 140
    NETWORK LAYER

    IP, ICMP, IPX, RARP, ARP, DHCP, BOOTP, BGP, RIP, OSPF
    To protect and to serve(r)...
  • tookeptookep Member Posts: 7 ■□□□□□□□□□
    Ok, cheers guys. I guess it's a bit of a controversial protocol as to where it works. Guess this proves why the OSI is a reference model and not a standard.

    I'll just think of it working between layers 3 and 2. Makes sense. They should create a sub-layer for it so, us studying it can fit into our model :P
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