network flapping

Richard tuxbox.guru at gmail.com
Fri Aug 8 10:40:15 CEST 2008


Alastair Stevens wrote:
> 2008/8/7 Paul M <paul-clug at mansfield.co.uk 
> <mailto:paul-clug at mansfield.co.uk>>
>
>     Alastair Stevens wrote:
>
>         Hi All - I've noticed my kernel logs filling up with network
>         interface errors recently (see below). My link seems to be
>         flapping up and down a
>
>
>     is this a 10/100/1000 interface? if so, have you heard of the
>     e1000 power saving bug?
>
>     that was a major headache till we learned how to resolve it.. it's
>     related to this one:
>     http://e1000.sourceforge.net/doku.php?id=known_issues#v_l_e_tx_unit_hang_messages
>
>
> Ah, nice one. Yes, it's an e1000 driver at least, so I shall 
> investigate. Actually, crazy question, but how on earth do I tell if 
> it's a 100Mbit or a 1Gbit interface?  Obviously the link is 100Mbit 
> since I don't have a gigabit router, but I cannot find any definitive 
> information about whether the board has a 1Gbit interface or not. It's 
> a standard Intel G33 board, I believe...
>
> AL
>
> -- 
> ========================================
> ALASTAIR STEVENS
> * Web - www.altrux.me.uk <http://www.altrux.me.uk>
> * Blog - www.altrux.me.uk/blog.html <http://www.altrux.me.uk/blog.html>
> ------------------------------------------------------------------------
>
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>   
Hi there,

To get the ethernet status, use mii-tool, thats if the hardware has a 
MII interface (it should tho)

# mii-tool -v
eth0: negotiated 100baseTx-FD flow-control, link ok
  product info: vendor 00:50:ef, model 14 rev 0
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 
10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 
10baseT-FD 10baseT-HD flow-control


Richard



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