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Date:      Fri, 2 Dec 2011 18:48:30 +0000
From:      Duane Hill <>
Subject:   Issues with Link Aggregation
Message-ID:  <>

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Hello Freebsd-Questions,

I   have   an  Asus  laptop  running  FreeBSD  8.2-RELEASE-p4.  I have
successfully  configured  both the wired and wireless interfaces. They
both  work  individually.  I  use the wireless interface more than the
wired,   so  I  have  attempted  to  us link aggregation (LAGG) to tie
the  two  together  so either can be used when connected. lagg and iwn
have been added into a custom compiled kernel.

FreeBSD  on this Asus uses alc0 for the wired interface and iwn(wlan0)
for the wireless interface. The following is in my rc.conf:

  ifconfig_wlan0="up wpa"
  ifconfig_lagg0="laggproto failover laggport wlan0 laggport alc0"

Looking  at  various  documentation shows this should support wlan0 as
the master and alc0 as the failover.

Everything  is  working like it should. However, every so often, I get
messages on the console stating:

  alc0: phy read timeout : 0
  alc0: phy read timeout : 17
  alc0: phy read timeout : 1
  alc0: phy read timeout : 1

Even  though this is happening, there doesn't appear to be any issues.
Can anyone shed light on why these messages are showing up?

If at first you don't succeed, so much for skydiving."

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