Nexus C93400LD-H1 400G Ports

[ex-engineer]

Hello.

Can the Nexus C93400LD-H1 400G uplink ports sync down to 100G natively by inserting a 100G optic in the 400G port? I would think they can, but I need it specifically stated. The data sheet does not mention it. Or I am missing it.

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/nb-06-nexus-93400ld-h1-switch-ds-cte-en.html

All I need are 100G uplinks, but I did want a switch that can support 50G natively, as this 50G switch does. This switch has 48x 50G + 4x 400G, and the 50G ports, I am told, can support 10G and 25G natively by inserting a SFP+ or SFP28 optic in the 50G port. 

Unfortunately, I am not getting any help from my Cisco rep, so I have to resort to this user board.

Thank you! 

[marce1000]

  - Doesn't look like it : https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/nb-06-nexus-93400ld-h1-switch-ds-cte-en.html
                     >...The Cisco Nexus^® 93400LD-H1 Switch is a 48-port 50G, 4-port 400G fixed switch.

  M.

[ex-engineer]

Thanks, perhaps. By 'fixed," it could also mean that it is embedded in the switch and not part of an uplink module. No? Why can't Cisco ever be clear about their products? 

[marce1000]

    - Good question , you could contact TAC , for details ,

  M.

[ex-engineer]

Thanks, was hoping my Cisco rep could help, but that's a loss. Maybe someone else on here knows for sure or maybe even a Cisco TAC or product engineer can chime in...