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Date:      Tue, 16 Sep 2014 19:59:18 -0500
From:      Jim Thompson <>
To:        Brett Glass <>
Subject:   Re: jme interface bounces up and down, up and down....
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <> <> <> <>

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> On Sep 16, 2014, at 6:53 PM, Brett Glass <> wrote:
> At 05:27 PM 9/16/2014, Chris Hill wrote:
>> On Tue, 16 Sep 2014, Brett Glass wrote:
>>> So, what is the best solution? I cannot throw out the machine, and
>>> because I am using a VLAN switch to multiplex the port to three LANs
>>> I do not want to reduce the speed to 100 Mbps. Ideas?
>> The man page mentioned says that if "the link partner enabled the =
IEEE 802.3az Energy Efficient Ethernet feature, the controller will not =
be able to establish a 1000baseT link." Maybe disable 802.3az on that =
port, if you can. Just a thought.
> It's a Netgear "green" switch, model GS105E. It has no way to disable =

The linux jmebp- driver from the JMicron website=20

provides a workaround for the issue.  It adds the delay_time module =
parameter, which causes the network card to attempt a fall back to 100 =
mbps after it cannot connect for several seconds (by default 11).  With =
this, link detection =E2=80=9Cworks=E2=80=9D, but the connection is =
100Mbps.   This is likely the reason the "problem didn't seem to occur =
with the bundled Linux distro.=E2=80=9D


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