PPP over ATM using Virt-Template

From: Lord, Chris (chris.lord@lorien.co.uk)
Date: Thu Mar 11 2004 - 17:28:30 GMT-3


Hi Group,

Can anyone help clarify this for me please. I have come across two different lab scenarios where a router has to connect to a BB router using PPP over ATM with a Virtual Template. The solutions to these two scenarios were as follows:

1)
int virtual-template 1
   ip address x.x.x.x y.y.y.y
   encaps ppp

int atm 0/1.6 point-to-point
   pvc 10/101
      encapsulation aal5ciscoppp virtual-template 1

2)
int virtual-template 1
   ip address x.x.x.x y.y.y.y
   encaps ppp

int atm 0/1.6 point-to-point
   pvc 10/101
       encapsulation aal5snap
       protocol ppp virtual-template 1

Neither of the labs gave any hint as to how the BB router had been configured or which method it was expecting. If we were faced with a PPP-ATM question in the real lab is there any way of determining which to use other than by trail-and-error - e.g. a debug or show command?

Thx,
Chris.

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