Date: Wed, 12 Jan 2011 08:18:08 +0100 (CET) From: sthaug@nethelp.no To: reichert@numachi.com Cc: freebsd-net@freebsd.org, artem@aws-net.org.ua Subject: Re: Juniper e3k with ports limitied to 100Mbit and re NICs on MSI MoBo: problems with duplex negotiation (Hetzner host provider discard FreeBSD support due this bug) Message-ID: <20110112.081808.74670677.sthaug@nethelp.no> In-Reply-To: <20110111195810.GH7511@numachi.com> References: <76226157.20110111222913@serebryakov.spb.ru> <4D2CB1F5.6080106@aws-net.org.ua> <20110111195810.GH7511@numachi.com>
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> > May be linux driver defaults to full-duplex if autoneg fails?.. > > I've seen some Linux drivers fail back to half-duplex under these > circumstances. > > It may very well depend on driver version and hardware (firmware)? > > I admit, I don't know what layer is responsible for handling > autonegotiation... It should be noted that fallback to half-duplex when autoneg fail is actually *required* by the IEEE Ethernet standards. We may not like it, but there it is... Steinar Haug, Nethelp consulting, sthaug@nethelp.no
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