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Re: [lwip-users] Help with PPP connection - modem disconnects for no obv
From: |
Sylvain Rochet |
Subject: |
Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason... |
Date: |
Wed, 20 Mar 2019 18:48:29 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Hi Patrick,
On Wed, Mar 20, 2019 at 01:20:02PM -0400, Patrick Klos wrote:
>
> For whatever reason, you're not responding to the CHAP challenges.
>
> Are you dialing into an ISP (which would require authentication) or into
> another system configured to be a "server"? Either way, the peer is
> expecting you to have a username and password of some kind, but you're not
> responding to their challenges.
Well, that's just PPP to a cellular modem, PPP link is only between the
device and the cellular modem to de/serialize IP packets on a serial
link. That's why authentication is never required, cellular modems
usually add some kind of fake authentication to support PPP clients
where authentication can't be disabled.
> Also, what version of LwIP are you using? I can't find some of these debug
> strings (like "CHAP Challenge") in my (2.1.2) sources. And are you sure all
> your modules were compiled with PPP_DEBUG defined as non-zero?
"CHAP Challenge" is from "CHAP" from chap_protent and "Challenge" from
chap_code_names[].
Debugging seem pretty well enabled, for once in a while I have no clue
what is wrong here, usually it's straightforward from the trace but here
it really isn't.
Sylvain
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Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason..., Patrick Klos, 2019/03/20
- Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason...,
Sylvain Rochet <=
Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason..., Freddie Chopin, 2019/03/20
Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason..., Freddie Chopin, 2019/03/20
Re: [lwip-users] Help with PPP connection - modem disconnects for no obvious reason..., Freddie Chopin, 2019/03/27