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Date:      Tue, 20 Jun 2000 00:27:09 +0100
From:      Brian Somers <brian@Awfulhak.org>
To:        Tomaz Borstnar <tomaz.borstnar@over.net>
Cc:        freebsd-net@FreeBSD.ORG, brian@hak.lan.Awfulhak.org
Subject:   Re: ppp and lqr - Warning: lqr_RecvEcho: Got packet size 54, expecting 12 ! 
Message-ID:  <200006192327.AAA54034@hak.lan.Awfulhak.org>
In-Reply-To: Message from Tomaz Borstnar <tomaz.borstnar@over.net>  of "Mon, 19 Jun 2000 19:40:46 -0100." <4.3.2.7.2.20000619193343.03422c50@193.189.189.100> 

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> Hello!
> 
> 	Using FreeBSD4.0-STABLE's ppp as of today I get this error when turning on 
> lqr for my PPPoE session:
> 
> Jun 19 12:39:45 triglav ppp[116]: tun0: Warning: lqr_RecvEcho: Got packet 
> size 54, expecting 12 !
> Jun 19 12:40:16 triglav ppp[116]: tun0: Warning: lqr_RecvEcho: Got packet 
> size 54, expecting 12 !

These warnings are wrong and were fixed a few days ago.  Ppp was 
warning about 54 byte (+ headers) packets with a 12 byte payload.

> Seems like ppp doesn't like that and breaks the connection. According to docs:

This is just a warning.  Ppp adjusts the packet and continues 
processing it.

> "When LQR is enabled, ppp sends
>               the QUALPROTO option (see ``set lqrperiod'' below) as part of the
>               LCP request.  If the peer agrees, both sides will exchange LQR
>               packets at the agreed frequency, allowing detailed link quality
>               monitoring by enabling LQM logging.  If the peer doesn't agree,
>               ppp will send ECHO LQR requests instead.  These packets pass no
>               information of interest, but they MUST be replied to by the 
> peer."
> 
> ppp gets the replies, but doesn't like them and drops the session! Nortel 
> Shasta 5000 with firmware 1.5.10 on the other side of PPPoE link.

Were there any other error messages ?  It may be worth turning up 
logging - maybe ``set log +debug lqm lcp''.

> How much overhead does LQR have for provider? What kind of reports can I 
> get if they turn it on?

Not much, and statistics concerning the link quality (if you enable 
lqm logging).  Ppp has never done much with these stats though.

> Thanks in advance.
> 
> Tomaz
> ----
> Tomaz Borstnar <tomaz.borstnar@over.net>
> "Love is the answer to the final question you ask" - Unknown

Cheers.

-- 
Brian <brian@Awfulhak.org>                        <brian@[uk.]FreeBSD.org>
      <http://www.Awfulhak.org>;                   <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !




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