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From: "Ross West" <westr@connection.ca>
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References: <alpine.OSX.2.00.1107042113000.2407@freemac>	<20110706201509.GA5559@michelle.cdnetworks.com>	<alpine.OSX.2.00.1107070121060.2407@freemac>	<20110707174233.GB8702@michelle.cdnetworks.com>	<alpine.OSX.2.00.1107072129310.2407@freemac>	<5D267A3F22FD854F8F48B3D2B523819385C32D96B7@IRVEXCHCCR01.corp.ad.broadcom.com>	<alpine.OSX.2.00.1107082009350.1070@freemac>	<5D267A3F22FD854F8F48B3D2B523819385F12FE86B@IRVEXCHCCR01.corp.ad.broadcom.com>	<alpine.OSX.2.00.1107112234460.1070@freemac>	<4E1BDD3F.4090607@FreeBSD.org>	<alpine.OSX.2.00.1107120143390.1070@freemac>
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Date: Tue, 12 Jul 2011 11:02:18 -0400
Organization: Network Connection
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Subject: RE: bce packet loss
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> > I do still see fixed setups in service provider handoffs - for example
> > this colo, Level3 and Hurricane.  Also all our metro ethernet stuff
> > specifies a fixed configuration.
> 
> Well one could also say that this sort of thing tends to result from
> the, "There is a knob, I MUST twist it!" syndrome.

It's a layer 8-9 issue.  It results from an auto-negotiation giving a
half-duplex connection, and no one noticing until 6 months down the road,
then demanding a huge credit from the provider for not selling a full-duplex
circuit as was contracted.

This happens way more often that you'd think.


R.