Guy Harris wrote:
On Mon, Mar 10, 2003 at 07:38:08PM -0700, Irfan Khan wrote:
I was looking at a log, using ethereal, where the packets were PPP over L2TP. The L2TP dissector was calling the PPP HDLC handler correctly however the PPP dissector was unable to make make sense of the packets because they had a 0x7e in the beginning.
What are the 0x7e's? They're presumably not framing bytes, as RFC 2661 says:
5.3 Forwarding PPP Frames
Once tunnel establishment is complete, PPP frames from the remote
system are received at the LAC, stripped of CRC, link framing, and
transparency bytes, encapsulated in L2TP, and forwarded over the
appropriate tunnel. The LNS receives the L2TP packet, and processes
the encapsulated PPP frame as if it were received on a local PPP
interface.
