Stretched ACI fabric with 10GE SFP+

[APatotski]

I would like to use 10GE DWDM SFP+ modules to connect leaf switches to spine switches in stretched fabric design. I'm planing to use 93180-EX and 9332C switches to build ACI fabric. Both switches support DWDM SFP+ with using QSA converter module. I found that 10G SFP+ can be used in multipod design (spine to IPN), in remote leaf (leaf to upstreame router). It is not clear - Is it supported for stretched fabric (leaf to spine)?   

[Remi Astruc]

Hello,

No. In Stretched Fabric design, the uplinks between Leaf and Spine can only be 40G or 100G (and 400G is coming).

DWDM can be used to carry natively the 40G uplinks (or 100G/400G), or can be used to carry an MPLS Pseudowire of 10G but in that case the 10G ends on the MPLS router, not on the Leaf/Spine.

Remi Astruc