From: ccie candidate (ccie1@xxxxxxxxx)
Date: Mon Jul 29 2002 - 06:24:27 GMT-3
Hi ;
let me try to explain this .
in the frame relay interfaces generally ,you need to inform the frame relay how
to map L3 addresses to L2 DLCIs , it is like you tell the port "if you want to
reach this IP address , use this DLCI "
for physical and multipoint interfaces , the Frame relay by default will consid
er the port can be connected to differnet locations , so that he expects you to
inform him which DLCI he should use to reach certain IP address , if you confu
se him ..he will simply give you encapsultation error message .
this is not the case with point-to-point subif , where the frame relay consider
that any traffic should be forwarded over the DLCI defined to him , so that yo
u dont really need to map anything if you have p2p subif ..the interface will f
oward over this DLCI anything that is in the same subnet as the subif .
on the hub router ,he doesnt care if the remote end is p2p or any other thing .
.he use the IP address for decisions..then he try to map IP address to the righ
t DLCI where you have to provide teh maps yourself.
i hope this whole "right" and helps .
--On Mon, 29 Jul 2002 15:36:55 chenyan wrote: >hi,guys, > >When configuring the spoke point-to-point subinterface and the hub phycial int erface, how the hub deals with the pvcs connected which are not seperated on it by the point-to-point subinterface? >And I do not know the details of the principle of the point-to-point subinterf ace. > >Thanks.
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