From: simon hart (simon.hart@btinternet.com)
Date: Sat Mar 12 2005 - 06:35:24 GMT-3
This does seem to make sense,
Suppose that you have several dialer profiles, in fact more dialer profiles
than ISDN interfaces. And some dialer profiles used ppp encaps and others
not, then one would obtain a greater efficiency by sharing all the dialer
profiles across all the physical ISDN interfaces.
If you had to assign an encapsulation to the physical interface then such an
advantage would dissappear.
Incidentally, when I use dialer profiles I rarely put an encapsulation on
the physical interface (for the reason above), however for the exam what is
the recommended method?
Simon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Nazgulero
Sent: 12 March 2005 08:58
To: ccie2be; Group Study
Subject: Re: encap ppp
Hello,
interesting, I also always thought that the physical interface encapsulation
determines the encapsulations of the logical interfaces, similar to Frame
Relay subinterfaces.
I just configured ISDN with HDLC encapsulation one of of the physical BRI
interfaces, and PPP on the dialer, and PPP on the other side on the physical
BRI, it works.
So apparently somehow the dialer config overrides the physical interface
encapsulation...
GP
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "Group Study" <ccielab@groupstudy.com>
Sent: Friday, March 11, 2005 9:43 PM
Subject: encap ppp
> Hi guys,
>
>
>
> When I first learned this, I was taught that "encap ppp" had to be
> configured on both the physical and logical interface.
>
>
>
> But, now I've heard that isn't always true.
>
>
>
> Can someone explain when "encap ppp" is needed on both and when it isn't?
>
>
>
> TIA, Tim
>
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