[rescue] Re: Sun Ethernet Device Speed

[Larry Snyder]

...except that:
In the handshake, the first option is 'can you auto-negotiate?'.  If
the answer is no, then we fall back to the 'parallel detection' phase,
where the best is 100/hdx.  IOW, if you hard-code one end of the link
to 100/fdx, you should hard-code the other end as well or you will
almost certainly force a duplex mismatch.  Bad mojo.  The /etc/system
stuff below is the right stuff to tweak on the Sun.  You *need* to do
the same on the switch.  Been there, done that, got more t-shirts
than I can count from this one.
-ls-


Robert Novak <rnovak at indyramp.com> wrote:
> On Sun, 17 Mar 2002, Eric Dittman wrote:
> 
> > I forgot to add, the man page for hme says the interface speed
> > can be forced, but doesn't say how.
> 
> I believe it's by turning off the options you don't want available...
> 
> adv_autoneg_cap               (read and write)
> adv_100T4_cap                 (read and write)
> adv_100fdx_cap                (read and write)
> adv_100hdx_cap                (read and write)
> adv_10fdx_cap                 (read and write)
> adv_10hdx_cap                 (read and write)
> 
> If you turn off autoneg and turn off all but adv_100fdx_cap for example,
> it will only tell the other end that it can do 100mbps full duplex.
> Assuming the other end (another host, hub, swtich) supports that, it
> should go into that mode. At least that's what comes to mind... hope it's
> right.
> 
> --Rob
> 
> Robert Novak, Indyramp Consulting * rnovak at indyramp.com * indyramp.com/~rnovak
> 	"I don't want to doubt you, Know everything about you
>       I don't want to sit Across the table from you Wishing I could run."
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