[L2tpd-devel] Try this out...

[Jeff M. <je...@ig...>]

OK...did some research...

Early drafts of L2TP had flow control for the actual data channel...at
draft-13, they ripped that out and put it in its own draft that, to the
best I can tell, just died, so now the L2TP spec doesn't call for flow
control on the data channel which is why RWS AVPs don't belong in ICCN's
and similar message types.

The Cisco 3000 Altiga thingy, is really anal about L2TP protocol
processing, and is very up to date on the L2TP protocol.  The Redback
apparently is rather more lenient...or perhaps recognizes the RWS AVP in
an ICCN and falls back into a backward compatibility mode from what I
can tell so it can interoperate with pre-draft-13 l2tp implementations.

I've gone through, and assuming I got everything right (I'll be
impressed if I did), I *think* I pretty much ripped out all of the flow
control processing on the data channels, which *should* bring l2tpd up
to date with the current L2TP spec regarding this issue.

I've attached a tarball of this...I don't want to commit it to CVS until
I have some idea that it at least basically works with both the Cisco
3000, and the RedBack as it involves some rather significant edits to
quite a few files.

If you all could give this a try and see if it works, I'd appreciate it.

Thanks!
-- 
Jeff McAdams                            Email: je...@ig...
Head Network Administrator              Voice: (502) 966-3848
IgLou Internet Services                        (800) 436-4456