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Re: layer 2 and layer 3 tunneling



Evren,

From: "Eren, Evren" <Evren_Eren@BONN.DETECON.DE>
Subject: layer 2 and layer 3 tunneling
Date: Wed, 10 Feb 1999 21:32:18 +0100

> I know, that I am in the wrong area, but I would be grateful if anybody can
> recommend good references 
> for layer 2 and layer 3 tunneling ?
> 
> My understanding is the following:
> 
> PPTP and L2F are Layer 3 tunneling protocols. They directly encapsulate IPX,
> IP etc.
>  
> L2TP is a Layer 2 tunneling protocol. It encapsulates PPP, which can
> encapsulate IPX, IP etc.

No. PPTP, L2F, and L2TP are all Layer 2 tunneling protocol. IPsec
tunnel mode is Layer 3.

> Thank you.
> 
> Evren
> 
> Please also see figure attached.
> 
>  <<...>> 
> 

=====================================
Motonori Shindo
   Systems Engineer     
   Ascend Communications Japan K.K.   
   email: mshindo@ascend.co.jp
   TEL: +81-3-5325-7306 
=====================================


References: