Re: (PM) Bad CRC error (fwd)

NOT a LE employee (livingston@iav.com)
Fri, 2 Jan 1998 16:58:09 -1000 (HST)

On Fri, 2 Jan 1998, Josh Richards wrote:

>
> It just means that ComOS detected a PPP packet that got corrupted somehow
> during transmission and it failed its internal CRC check. It will be
> dropped and as part of the PPP protocol, will get retransmitted. It can
> be caused by things such as line noise, FIFO buffer overruns, dropped
> connections, flaky modem connection, etc.
>
> It is not a symptom of a bad modem card in the PM3 and probably not that
> big of a deal unless you are seeing a lot of them and it it would probably
> become very apparent by other means (i.e. you'd have a lot of other
> problems if the card was going out).

FWIW, someone earlier reported (should be in archives somewhere) that
Modems without error correction would have this happen quite often, hmmm
wonder why? ;)

So, check if the user is on a 14400 connect and direct and I bet they are
the ones on that modem giving you these reports of BAD CRC.....

;)

> Date: Fri, 2 Jan 1998 18:48:57 -0500 (EST)
> From: Carl Hillsman <carl@intrepid.net>
> To: Ben Conner <ben@webworldinc.com>
> Cc: portmaster-users@livingston.com
> Subject: Re: (PM) Bad CRC error
>
> i've seen this as well....but intermittently. might just be line noise,
> but i have not gotten a definitive answer yet.
>
> carl
>
> On Fri, 2 Jan 1998, Ben Conner wrote:
>
> > Hi,
> >
> > I'm getting the following msg in debug mode on my PM3 w/ the 56K digital
> > cards:
> >
> > PPP recv: BAD CRC - mdp M1
> >
> > I assume this indicates one of the modem chips is bad? This portmaster has
> > 5 of the 10 modem cards in it. How can I mask this one off so it uses one
> > of the other ones?
> >
> > --Ben

--
Aloha from Paradise,

Sherwood

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