The switch needs to work with an sFlow server.
sFlow is a basic feature of a switch and is not under License control.
Only the following switch models support sFlow:
S2720-EI, S5720-LI, S5720S-LI, S5720-SI, S5720I-SI, S5720S-SI, S5720-EI, S5730-SI, S5730S-EI, S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735S-S, S5735-S-I, S6720-LI, S6720S-LI, S6720-SI, S6720S-SI, S6720-EI, S6720S-EI
For details about software mappings, visit Hardware Query Tool and search for the desired product model.
Flow and Counter sampling can only take effect on physical interfaces. In addition, they cannot take effect on Eth-Trunk, but can take effect on member interfaces of an Eth-Trunk.