[arm-allstar] Network Configuration -- expected behaviour

Mon Jul 28 00:14:39 EST 2014

Hi Everyone,

I tested tonight without Ethernet plugged in and I see similar messages 
(below) to those mentioned by John. This makes me think there are physical 
network issues--either a bad cable, switch, etc.

With no network plugged at boot, I get:

[    9.264419] net eth0: initializing cpsw version 1.12 (0)
[    9.276627] net eth0: phy found : id is : 0x7c0f1
[    9.276669] libphy: PHY 4a101000.mdio:01 not found
[    9.281785] net eth0: phy 4a101000.mdio:01 not found on slave 1
[    9.327636] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

Note that "dmesg" reports no further log entires about eth0 when the cable 
is disconnected.

Now, when I later plug the cable in on that same system, I get:

[  418.001179] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
[  418.001247] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

And, the network is working properly (static IP config). Now, if I 
again unplug the cable, I get:

[  622.863426] libphy: 4a101000.mdio:00 - Link is Down
[  630.384894] net eth0: initializing cpsw version 1.12 (0)
[  630.389316] net eth0: phy found : id is : 0x7c0f1
[  630.389353] libphy: PHY 4a101000.mdio:01 not found
[  630.394768] net eth0: phy 4a101000.mdio:01 not found on slave 1
[  630.407957] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

And, finally, plug the cable back in and I see:

[  817.565556] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
[  817.565636] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

Hopefully this will help some-

73, David KB4FXC

On Mon, 28 Jul 2014, Doug Crompton wrote:

> Here is my network boot messages on one of my systems....
> 
> [    9.018101] net eth0: initializing cpsw version 1.12 (0)
> [    9.022485] net eth0: phy found : id is : 0x7c0f1
> [    9.022523] libphy: PHY 4a101000.mdio:01 not found
> [    9.027620] net eth0: phy 4a101000.mdio:01 not found on slave 1
> [    9.101282] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> [    9.254230] usbcore: registered new interface driver snd-usb-audio
> [   12.098811] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
> [   12.098876] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> 
> This system is working normally. So as I mentioned the not found messages can be ignored. Does your boot look like this?  Also do an  'ifconfig' and send the output so we can see it.
> 73 Doug
> WA3DSP
> http://www.crompton.com/hamradio
> 
> 
> > Date: Sun, 27 Jul 2014 20:45:48 -0700
> > From: ar at dseven.org
> > To: arm-allstar at hamvoip.org
> > Subject: Re: [arm-allstar] Network Configuration
> > 
> > You don't necessarily need a serial cable - you can see them in
> > `dmesg` (kernel messages). Here's what mine says...
> > 
> > [    9.907251] net eth0: initializing cpsw version 1.12 (0)
> > [    9.910123] net eth0: phy found : id is : 0x7c0f1
> > [    9.910153] libphy: PHY 4a101000.mdio:01 not found
> > [    9.915279] net eth0: phy 4a101000.mdio:01 not found on slave 1
> > [    9.956453] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> > [   11.916167] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
> > [   11.916242] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> > 
> > If John's not seeing "Link is Up", there may be a physical problem
> > (bad cable, switch, etc.), or maybe some config issue that's causing
> > the NIC to not get initialised....
> > 
> > 73,
> > 
> >     ~iain / N6ML
> > 
> > 
> > On Sun, Jul 27, 2014 at 8:32 PM, Doug Crompton <doug at crompton.com> wrote:
> > > John,
> > >
> > >  I believe those errors can be safely ignored. I will be hooking up my
> > > serial cable tomorrow and I will check but as I remember I have seen them on
> > > all boots and the network works.
> > >
> > > Can you describe your network issues again?  What router, isp, static or
> > > dhcp?  Unless you are setting something wrong in the BBB it should work as
> > > it has for everyone else. Perhaps we can sked or talk on the phone. Node
> > > 27225 works for me if you have a node that works.
> > >
> > > 73 Doug
> > > WA3DSP
> > > http://www.crompton.com/hamradio
> > >
> > >
> > > ________________________________
> > > Date: Sun, 27 Jul 2014 21:34:52 -0500
> > > From: wb5nfc at gmail.com
> > > To: arm-allstar at hamvoip.org
> > > Subject: [arm-allstar] Network Configuration
> > >
> > >
> > > I have been struggling with router and basic network setup for several weeks
> > > thinking that I have a major router configuration problem. I finally got
> > > USB-serial communication established with my BBB tonight. The following
> > > (apparent) errors appear at the very end of the boot process:
> > >
> > > [  OK  ] Started Automatic wired network connection using netctl profiles.
> > > [    6.203253] libphy: PHY 4a101000.mdio:01 not found
> > > [    6.208395] net eth0: phy 4a101000.mdio:01 not found on slave 1
> > >
> > > Arch Linux 3.8.13-24-ARCH (ttyO0)
> > >
> > > bbb2186 login: [   11.527052] libphy: PHY 4a101000.mdio:01 not found
> > > [   11.532149] net eth0: phy 4a101000.mdio:01 not found on slave 1
> > >
> > > Arch Linux 3.8.13-24-ARCH (ttyO0)
> > >
> > > bbb2186 login: root
> > > Password: xxxxxxx
> > > BBB Allstar Release Version 1.1 June 25, 2014 WA3DSP
> > >
> > > -------------------------
> > >
> > > What do these error messages mean and how do I correct them?
> > >
> > > Thanks in advance for any guidance you can provide.
> > > --
> > > John Kenney
> > >
> > > _______________________________________________ arm-allstar mailing list
> > > arm-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit the BBB
> > > web page - http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
> > >
> > > _______________________________________________
> > >
> > > arm-allstar mailing list
> > > arm-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > >
> > > Visit the BBB web page -
> > > http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
> > _______________________________________________
> > 
> > arm-allstar mailing list
> > arm-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > 
> > Visit the BBB web page - http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
> > 
>  		 	   		  