[c-nsp] Question about manually configuring 1000/Full on Cisco switches

[John Neiberger]

On Sun, Oct 31, 2010 at 6:49 PM, kmedcalf at dessus.com
<kmedcalf at dessus.com> wrote:
>>On Sun, Oct 31, 2010 at 6:18 PM,  <Christopher.Marget at usc-bt.com> wrote:
>>> "speed 1000" on a copper port capable of 10/100/1000 disables 10 and 100
>>> Mb/s operation by removing those modes from the list of those advertised to
>>> the link partner.
>>>
>>> This may be useful if you would prefer a cable failure on pins 4, 5, 7 or
>>> 8 to drop the link and keep it down, rather than renegotiating it at 100
>>> Mb/s.
>>>
>>> N-way still runs.
>>>
>>> /chris
>
>> That's what I thought. So, if a link is already successfully
>> negotiating at 1000/Full with no errors, there really is no point in
>> hard setting it to 1000/Full, in my opinion.
>
> Does this mean that "speed 1000" is therefore equivalent to "speed auto 1000"?
>

That's what it looks like to me, but that's what I wanted to verify.
It seems to me that if you're already connected at 1000/Full (auto),
it literally does nothing behavior-wise if you manually configure
1000/Full, since N-way is still operating.