[17526] in North American Network Operators' Group
Re: PPP over Ethernet?
daemon@ATHENA.MIT.EDU (Vijay Gill)
Thu Jun 4 08:17:20 1998
Date: Thu, 4 Jun 1998 07:43:42 -0400 (EDT)
From: Vijay Gill <wrath@cs.umbc.edu>
To: dirk@power.net
cc: nanog@merit.edu
In-Reply-To: <19980603231025.12071@orlando.power.net>
On Wed, 3 Jun 1998 dirk@power.net wrote:
> > could you explain how ppp encapsulating (etherh+payload)
> > reduces the overhead?
>
> Who says you need the etherheader? Its not ethernet, its a point to
> point connection in this setup.
If you are using ethernet cards to talk to each other, it _is_ ethernet.
The bits will be placed on the wire, the framing, CSMA/CD algorithm etc,
will all be done in accordance with the 802.3 spec. The physical wire
will be carrying the bits in 802.3 format, including the preamble,
starting frame delimiter, MAC destination addrress and MAC source address,
since the cards don't know how to use any other method of framing and
sending the data.
-vijay
