Re: [lwip-users] How to test IP over PPP ?

[Peter Graf]

Hello Marc,

> I have just tested lwIP's PPP on a big-endian machine (PPC) and it works
> just fine.
>  
Many thanks. Since PPC can also run in little-endian mode, and many PPC 
targets do so, please allow asking back if you're sure about the mode?

I tried to manually analyze a configure request sent out by lwIP PPP, 
sniffed from the serial port, and found something that might be 
endianess confusion. My PPP documentation (from a book) is a bit 
unclear, so I'm possibly wrong. Do you have a pointer to a description 
of the configure request packets?

[PPP Test on a single Linux machine snipped]

Thanks for the info. The problem occurs with an embedded non-Linux 
target though. (Connected to a Linux box.)

> It looks like your target isn't receiving anything; just continuously sending
> LCP Configure-Request packets and timing out waiting for the response.
>  
On low level, the machine is definitely receiving data. I'll try to 
check if it reaches PPP.

All the best,
Peter