APR protocol

moh_nour2003 · ‎02-22-2004

what is the related osi layer to the arp protocol

Georg Pauwen · ‎02-22-2004

Hello,

ARP is a low-level protocol at layer 2 in the OSI model. Check this link for a definition:

ARP

http://compnetworking.about.com/library/glossary/bldef-arp.htm

HTH,

Georg

tbaranski · ‎02-22-2004

Since it runs over Ethernet it can be considered layer 2.5. Protocols don't always map to the OSI model perfectly.

r.leutert · ‎02-24-2004

ARP is actually a layer 2 protocol as it is not routable (only bridges or Layer2 switches forward an ARP). But as it deals with layer 3 IP address resolution, you may see it as an utility protocol for layer 3. But ARP has not been designed for IP only (that's why you have the protocol field in the ARP header), it has been used by other protocols too,which have disapeared in the meantime (i.e. Chaosnet protocol). Regards Rolf