SFP-10G-SR or with "S"?

[Hubsi-Smith]

Hello, I am unsure if I understood the difference correctly. Is it right, that the "S" in SFP-10G-SR and SFP-10G-LR only supports Ethernet? In case I want to connect 2 switches via Fibre the "S" is enough?

[balaji.bandi]

If they are in the same place suggest to go with S -Class not that expensive.

if you looking for difference as below :

Cisco 10G S-Class modules such as SFP-10G-SR-S only support Ethernet protocol. They don’t support FCoE(Fiber Channel over Ethernet), which is a storage protocol that enables fiber channel communications to run directly over Ethernet. While Cisco 10G non-S-Class modules like SFP-10G-SR support three protocols including Ethernet, OTN (Open Transport Network) and WAN-PHY (Wide Area Network-physical layer). In addition, S-Class 10G transceivers aren’t TAA (Trade Agreements Act) certified, but non-S-Class optics are all compliant to TAA.

[Hubsi-Smith]

Thank you for your explantation. We only want connect two c9200 switches together via singlemode fibre. Currently and in future there is no need for FCoE support.

I am not conform what could happend if we would buy no TAA supported SFP modules. I thought that all components produced by Cisco are useable without any issue?