Good Explanation Paul !!!
""Paul Jin"" escreveu na mensagem news:[EMAIL PROTECTED]... > 1 - FR treats p2p subinterfaces as a distinct stand alone interface, meaning > the router is tricked into thinking it has multiple serial interfaces > instead of just one. -- thus, the physical interface might be s0, but you > might create 10 subineterfaces p2p from s0.1- s0.10. > > The router will think that even though all these PVCs come in through the > same physical interface, it will think that the router actually has 10 > serial interfaces, thus no need for split horizon. > > When you do multipoint or do the FR PVCs on the physical interface, > the router believes that all these communication is converging back > to the same physical interface. It does not think that even though, you > might have 10 PVCs, all coming from 10 separate locations, that > these PVCs are separate. All it sees from this point of view is > 1 pipe back into itself, thus your need for split horizon or it thinks it > needs to enable split horizon to stop any loops. > > 2 - NBMA (Non-Braodcast Multi-Access) that is what frame relay is. > You can compare this to BMA and an example of that is ethernet. In > ethernet, you have devices that connected to a common multiaccess device and > the nodes have the ability to do a broadcast to find each other. In FR, you > have multiaccess capability, such as multiple PVCs converging into 1 primary > location. For example, the 10 remote sites going into 1 HQ, but FR does not > give you broadcast capapbilities that is available in the ethernet network. > > Paul Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23413&t=23104 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
