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

kmedcalf at dessus.com kmedcalf at dessus.com
Sun Oct 31 20:49:09 EDT 2010


>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"?

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