[f-nsp] Transceiver "not supported" on ICX7750 in Breakout-Mode

[Eldon Koyle]

Sorry, my email client keeps using the wrong from address for this list.
On May 18, 2016 8:07 AM, "Eldon Koyle" <ekoyle at gmail.com> wrote:

> You can run 40G without stacking on the 7750, although you may need to
> change some default stacking settings.  What code version are you running?
>
> I suspect support for third-party breakout cables is very limited.
>
> --
> Eldon Koyle
> On May 18, 2016 3:20 AM, "Franz Georg Köhler" <lists at openunix.de> wrote:
>
>> Hello everyone,
>>
>>
>> we recently installed our first ICX7750 in Breakout-Mode.
>>
>> While it was at first suprising for us that this switch can only either
>> break out 40G into 4x10G or enable stacking, I see an interesting
>> phaenomenon with the transceivers in breakout mode:
>>
>> Our (third party) transceivers do not work in breakout mode while they
>> work fine in 40G-mode.
>> Does anybody have an idea why this is the case? Is there any feature on
>> the transceiver required for the breakout mode?
>>
>> This is what show media looks like with two identical transceivers (port
>> 6 is in breakout mode):
>>
>> Port 1/2/1:  Type  : EMPTY
>> Port 1/2/2:  Type  : EMPTY
>> Port 1/2/3:  Type  : 40GE-SR4 100m (QSFP+)
>> Port 1/2/4:  Type  : EMPTY
>> Port 1/2/5:  Type  : EMPTY
>> Port 1/2/6:1:  Type  : 40GE-SR4 100m (QSFP+) (Not supported)
>> Port 1/2/6:2:  Type  : 40GE-SR4 100m (QSFP+)
>> Port 1/2/6:3:  Type  : 40GE-SR4 100m (QSFP+)
>> Port 1/2/6:4:  Type  : 40GE-SR4 100m (QSFP+)
>>
>>
>> Best regards,
>>
>> Franz Georg Köhler
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>
>
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