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Re: [lwip-users] Status of PPP implementation

From: Peter Graf
Subject: Re: [lwip-users] Status of PPP implementation
Date: Sat, 11 Oct 2003 13:28:12 +0200


I'm in the early stage of evaluating diffenet TCP/IP stacks for embedded use. I've no ethernet, so I'm heavily in need of IP over serial - I think I'll go for PPP!

Do you have specific requirements which forbid the use of SLIP? I can confirm that lwIP works well on my 68k target with SLIP. Much simpler and uses less code.

Some of my requirements to the stack are:
- capable of running a PPP server
- being a PPP client
- support for modem dial-in (in time... right now, I have no modem)

Please, can anyone shine some light on these issues?

I've not yet been able to get lwIP PPP to work on my target. It sends packets, and the other endpoint, too, but a connection is not established. My knowledge about the PPP protocol is a bit poor, so I failed to find the cause of the problem. I hope others on this list had more success, it would be interesting to know on which target systems it worked.

BTW I'd like to ask if someone could provide a working example of lwIP PPP options/initialization plus the pppd configuration of the other endpoint (e.g. Linux).


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