You keep trying but it just doesn't work... On Wed, Dec 14, 2011 at 9:12 AM, <[email protected]> wrote:
> > > > > > Please delete me from this distribuiton list. > > Thanks Dave > > > > > > > Quoting Andres Villalva <[email protected]>: > > Another way to look at it is via the layer definitions themselves. >> >> Layer 3 provides logical addressing. In other words an address that is >> independent of physical hardware containing some mechanism to provide a >> network and host portion thereby enabling it to be routed. Arp does not do >> that. >> >> Layer 2 provides physical addressing as well as services to communicate >> with higher layers (i.e. layer 3). That is a better fit for arp. >> >> There are many examples of protocols that do not fit perfectly by >> definition into a single layer and you can make that arguement for arp at >> layer 2, however, as discussed above it is certainly not a layer 3 >> protocol. So in my eyes that debate is null and void due to the absence of >> any other suitable contenders. >> >> Hope that helps, >> >> Andres >> >> On 13/12/2011 7:31 PM, "CCIE KID" <[email protected]> wrote: >> >> Hey guys, >> >> I guess they say its a Layer 2 or Layer 3 on the basis of encapsulation. >> ARP is encapsulated in Layer 2 header. So its a Layer 2 protocol >> But OSPF, EIGRP and ICMP are encapsulated in Layer 3. So thats why it is a >> Layer 3 Protocol. >> So on the basis of encapsulation, they would have brought out that the >> protocol is a Layer 2 or Layer 3. >> >> BGP,RIP are encapsulated in TCP and UDP respectively. So they are >> application layer protocol. >> >> Where does it encapsulate depends upon where it sits in OSI Layer, >> >> ARP sits above Layer 2 but layer 3. So thats why Scott would have called >> it >> as a Layer 2.5 Protocol >> >> OSPF,ICMP,EIGRP are all payloads of IP . They are all present above IP but >> below Layer 4. So they r all Layer 3.5 protocol. >> >> So it all depends upon where does the protocol actually sits in the OSI >> layer. >> >> I guess this topic would have opened up many logics in networking >> >> I thank everyone who contributed >> >> I also enjoy working on this topic >> >> >> >> >> On Tue, Dec 13, 2011 at 1:55 PM, Michael Davis - Webquor < >> [email protected]> wrote: >> >> Sorry... >>> >> ______________________________**_________________ >> For more information regarding industry leading CCIE Lab training, >> please visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com >> >> http://onlinestudylist.com/**mailman/listinfo/ccie_rs<http://onlinestudylist.com/mailman/listinfo/ccie_rs> >> >> > > ______________________________**_________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/**mailman/listinfo/ccie_rs<http://onlinestudylist.com/mailman/listinfo/ccie_rs> > -- Jay Taylor CCIE #28391 @JTIE_6EE7 _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
