Frame relay multipoint and point to point.

DevilWAH

Can any one confirm this is correct please.

by default the physical interface is multipoint, and the sub interface is point to point.

And the difference is that, split horision is disabled on multipoint but enabled on point to point.

Or what else does the command

#int f1/0.1 point-to-point / multipoint achieve?

Because as far as I can see you can still set up and interface with either the, interface delci command, or the framerelay map method (point to point / multipoint). which ever you chose? ( so the command ccan still be seen but it does stop you running it!, but still is this the only thing that setting the link type affects?)

Cheers

Aaron

Forsaken_GA

split horizon isn't disabled for all protocols on multi-point by default, I think IPX and AppleTalk both still get pissy about it in multipoint. So if you configure subinterfaces, traffic which comes in one interface can still go back out that interface because the router considers the subinterfaces to be unique

multipoint subinterfaces are really only useful if you've got a multipoint network and you're migrating to a point to point structure. Since you can't really take it all down at once to migrate without taking the entire network offline, you define the multipoint subinterfaces to keep your multipoint network intact, but then you can convert individual links to point-to-point and not violate any split horizon rules