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Beginner
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Is soft TX_DISABLE via I2C the only option to disable TX on SFPs in XL710 Nic ?

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As far as I can see, there is no software defined pin (SFP) to control TX_DISABLE statistics. I wonder if soft TX_DISABLE via I2C the only option to disable TX on SFPs in XL710 nic. If so, it sounds bad as soft TX_DISABLE is optional and up to the SFP vendors to support it.

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Community Manager
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Hi Yogaraj.Baskaravel,

 

 

You may refer to page 128 of 710 series datasheet for reference:

 

 

https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xl710-10-40-controller-datas...

 

 

As extracted here

 

"Typical SFP+ modules provide software or hardware control of TX_Disable and Rate Select (RS0/RS1) inputs. If software control

 

is used, the TX_Disable and RS0/RS1 bits can be accessed through the I2C interface. If hardware control is used for rate

 

selection, inputs RS0 and RS1 are tied together and connected to the same SDP output"

 

 

Hope this information help.

 

 

Regards,

 

Sharon

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Highlighted
Community Manager
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Hi Yogaraj.Baskaravel,

 

 

Thank you for posting in Wired Communities. I will have to check on this.

 

 

Regards,

 

Sharon
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Highlighted
Community Manager
20 Views

Hi Yogaraj.Baskaravel,

 

 

You may refer to page 128 of 710 series datasheet for reference:

 

 

https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xl710-10-40-controller-datas...

 

 

As extracted here

 

"Typical SFP+ modules provide software or hardware control of TX_Disable and Rate Select (RS0/RS1) inputs. If software control

 

is used, the TX_Disable and RS0/RS1 bits can be accessed through the I2C interface. If hardware control is used for rate

 

selection, inputs RS0 and RS1 are tied together and connected to the same SDP output"

 

 

Hope this information help.

 

 

Regards,

 

Sharon

View solution in original post

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Highlighted
Beginner
19 Views

Hi Sharon!

Right. So there is no hardware control for TX_DISABLE of SFPs on XL710 and software control is the only option. That is bad as soft TX_DISABLE is an optional one.

Thanks for checking.

Best regards,

Yogaraj

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Highlighted
Community Manager
19 Views

Hi Yogaraj.Baskaravel,

 

 

You are welcome. Any other inquiries? Please feel free to update me. Thank you.

 

 

Regards,

 

Sharon

 

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