On Tuesday 21 November 2006 17:45, Paul Penrod wrote:
> That's what PPP is: Point to Point via TCP/IP.
Perhaps I'm misreading what you mean to say, but it sounds like you're saying
PPP rides on top of TCP/IP which isn't correct. PPP can ride on any
bit-oriented data stream. It *can* be layered on top of a TCP octet stream,
and often is to create VPN tunnels, but when used on a modem it doesn't ride
on TCP/IP or any lower-level packet-oriented protocol other than the modem
character frames.
PPPoE uses ethernet frames to provide the transport and nests PPP frames
inside them.
PPP can be used to transport many different network-layer protocols (even
simultaneously), but most PPP frames carry IP packets, so maybe you were
talking about PPP carrying IP, rather than the reverse.
Regards,
Shawn.
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