Hi Dave,

Thank you for helping out here.

Yes, the four SFP28 ports on the ZCU216 aggregate in an implementation of a 
CAUI-4 PHY making a logical 100GBASE-CR/SR/LR/KR-4 link from the 4 SFP28 lanes.

Mitch

> On Jul 31, 2023, at 1:03 AM, David Harold Edward MacMahon 
> <dav...@berkeley.edu> wrote:
> 
> Hi, Mitch,
> 
> Does this mean that the four ports on the ZCU216 can function as a single 100 
> GbE interface?  If so, then I'll need to amend my response to Ken in a 
> different thread.
> 
> Thanks,
> Dave
> 
>> On Jul 30, 2023, at 22:28, Mitch Burnett <mitch.burn...@byu.edu> wrote:
>> 
>> Ken,
>> 
>> If you plan to use fiber you can use this MTP to 4 UPC/LC breakout cable: 
>> https://www.fs.com/products/68059.html With these generic SFP28 transceivers 
>> for the LC end: https://www.fs.com/products/75296.html
>> 
>> The MTP end of the connector will need to have a transceiver programmed to 
>> be compatible for your target NIC/switch. For example, targeting a Mellanox 
>> NIC you can purchase the following transceiver making sure to select the 
>> “Mellanox” compatible configuration: https://www.fs.com/products/71009.html
>> 
>> If you want to use copper cables you can purchase this 100G to 4x25G 
>> breakout cable: 
>> https://www.fs.com/products/49617.html?attribute=10201&id=197844
>> 
>> When choosing cooper, make sure the configuration is the “dual 
>> compatibility” solution. This configuration will have “end A” targeting your 
>> hardware brand that the QSFP28 end will plug into (e.g., select Mellanox for 
>> a Mellanox NIC) and that “end B” is selected to be “generic”. For copper, it 
>> is also not recommended to purchase lengths longer than 3 meters.
>> 
>> A few other notes to get the ZCU216 100G running. Jumpers need to be 
>> installed on each of the 4 headers next to the 4x SFP28 cage to enable 
>> transmit. See the ZCU216 UG for more information regarding this. The 
>> reference clock for the 100G CMAC also needs to be programmed. For this, 
>> there is a `prg_8a34001` binary distributed with the CASPER ZCU216 image in 
>> the `/home/casper/bin` directory.
>> 
>> Hope this helps,
>> 
>> Mitch
>> 
>>> On Jul 28, 2023, at 6:27 AM, Ken Semanov <shapkiqua...@gmail.com> wrote:
>>> 
>>> 
>>> Dear Mitch,
>>> 
>>> Thanks for the help with this.  Would you happen to know the make and model 
>>> of the cable that was used for implementing the tutorial?  Also the 
>>> receiving NIC?   I believe we have enough resources here to closely 
>>> replicate your hardware. 
>>> 
>>> 
>>> 
>>> On Monday, July 24, 2023 at 7:20:45 PM UTC-4 Mitch Burnett wrote:
>>>> By default, the tool will targeting the first CMAC location in this case 
>>>> it is the 4x25 SFP28 cage for the ZCU216.
>>>> 
>>>> The 100G port option is the one you would want to select.
>>>> 
>>>> Best,
>>>> 
>>>> Mitch
>>>> 
>>>>> On Jul 24, 2023, at 3:40 PM, Ken Semanov <shapki...@gmail.com <>> wrote:
>>>>> 
>>>>> 
>>>> 
>>>>> A simulink model appears below with the hosting github. Is this tutorial 
>>>>> intended to target a ZCU216 with a mezzanine card containing a 100GbE 
>>>>> port, or is it intended to target to the J29 4xSFP28 cage?  
>>>>> 
>>>>> zcu216_tut_onehundred_gbe.slx
>>>>> 
>>>>> https://github.com/mitchburnett/tutorials_devel/tree/main/rfsoc/tut_onehundred_gbe
>>>>> 
>>>>> In light of the above question, what should be the port configuration on 
>>>>> the receiving NIC?   The following options are available.  Thank you ! 
>>>>> 
>>>> 
>>>>> <portoptions.png>
>>>>> 
>>>>> 
>>>>> 
>>>>> 
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