How to Find Your Right New Catalyst 9000 Switches?

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One of questioners posted his request in Cisco’s Communities, like this:

Help me find these switches:

Access Switch PoE 24 port With 2 SFP+ 10G LC/LR IP Base
Distribution Switch 16 port with 12 X 10G SFP+LC/LR

Yes, one option he could choose is to roll out the new Catalyst 9000 Series switches:

Access Switch PoE 24 port With 2 SFP+ 10G LC/LR IP Base: C9300-24U-E (though you may need the -A version depending on what functionality you needed from IP-Base)

Distribution Switch 16 port with 12 X 10G SFP+LC/LR

C9500-40X-E (the -A version is required if you want to do HSRP, however)
C9500-24Q-E (same note applies).

Using the 40X version of the C9500 would allow you to implement 10-Gig uplinks for your access switches and can provide 40-Gig uplinks from the Distribution Switches to the Core. However, switching to the 24Q version of the C9500 would allow you to extend 40-Gig uplinks all the way down to your access switches. Depending on which way you go, you’ll need to include the following modules for the Access Switches and optics:

10-Gig Option (using C9500-40X): Expansion module for the C9300’s would be C9300-NM-8X and you would need QTY 4 of SFP-10G-LR per access switch (2 for the C9300 and 2 for the C9500). 40-Gig Uplink Module for the C9500-40X is C9500-NM-2Q and you’d need the QSFP-40G-LR4 optics (QTY 8 total) to utilize 40-Gig to your Cores.
40-Gig Option (using C9500-24Q): Expansion module for the C9300’s would be C9300-NM-2Q and you would need QTY 4 of QSFP-40G-LR4 per access switch (same as above). The C9500-24Q has enough 40-Gig ports to provide uplinks to the Cores and you’d still need QTY 8 of the QSFP’s for that.

Relatively the same thing could be accomplished using 3850’s for access and 6840-X, 4500X, or even 3850’s.