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From: luvraghu on 19 Apr 2008 14:50
why do we need a virtual template interface while configuring pppoe on
cisco router?
Also why vpdn group is configured?

can anyone please answer my questions.

regards,
raghur
From: Doug McIntyre on 20 Apr 2008 02:14
luvraghu(a)gmail.com writes:
>why do we need a virtual template interface while configuring pppoe on
>cisco router?
>Also why vpdn group is configured?

Thats they way they decided to do it??

Ie. you need something to setup the process that will be doing the "dialout"
for the PPP, and while for the earlier PPPoA, they used the interface dialer,
they chose not to for PPPoE?

Probably because they worked on the server end first. The VPDN groups
can be used for many more than PPPoE, thats where you end up doing
L2F, L2TP, PPTP, as well as PPPoE (server side).

When they did the client side, they probably just made it all part of
the same, as you would do client-side L2TP through a VPDN group as well.
So they did the same for PPPoE within the VPDN group.

I guess it seems straightforward enough to me, but I deal with all the
above, not just a client PPPoE setup. As I've said before, the cisco
routers are more like a hammer and a bunch of boards, rather than a
pre-fab kit. You can do so much more, but you have to put some of the
pieces together in new ways, but you aren't constrained by the
existing design (so much).





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