"Could the auto-negotiate depend on the order in which things are turned
on?"
In a decade of working intensively with speeds of ethernet, I have never
seen this to be the case. Auto-neg is a sold standard that has been very
well tested
and implemented. Any network device made in at least the past 15 years
should default to auto-neg on.
With that being said, if there is a cabling fault or a NIC is failing that
could certainly cause two net devices to not auto-negotiate.
It's really easy to check eth speed/dup/auto-neg on the linux box side with
ethtool:
~$ ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
*Supports auto-negotiation: Yes*
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric
*Advertised auto-negotiation: Yes*
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric
*Link partner advertised auto-negotiation: Yes*
Speed: 100Mb/s
Duplex: Full
On Thu, Jul 31, 2014 at 6:22 PM, Bill Barry <[email protected]> wrote:
> It could be as Neal suggests an auto-negotiate problem. This system was
> working and then with no physical changes, stopped working. Could the
> auto-negotiate depend on the order in which things are turned on?
>
> Bill
>
>
> On Thu, Jul 31, 2014 at 12:40 AM, Neal <[email protected]> wrote:
>
> > Minor point -- the WRT54G is also not gigabit. :-)
> >
> > Major question -- do you have any of the switches or devices set to a
> > specific speed or are they all auto-negotiate?
> >
> > NealS
> > _______________________________________________
> > PLUG mailing list
> > [email protected]
> > http://lists.pdxlinux.org/mailman/listinfo/plug
> >
> _______________________________________________
> PLUG mailing list
> [email protected]
> http://lists.pdxlinux.org/mailman/listinfo/plug
>
_______________________________________________
PLUG mailing list
[email protected]
http://lists.pdxlinux.org/mailman/listinfo/plug
