Re: (PM) Bad CRC error (fwd)

Josh Richards (jrichard@livingston.com)
Fri, 2 Jan 1998 17:26:15 -0800 (PST)

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).

Josh Richards - <jrichard@livingston.com>
Beta Engineer
Lucent Technologies (Remote Access Business Unit)
(previously Livingston Enterprises, Inc.)

---------- Forwarded message ----------
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

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