Radu-Adrian FEURDEAN wrote on 31/07/2020 19:28:
For sFlow, most (??? all ???) platforms sample*inbound* traffic only.
Pretty much all chipsets that support sflow allow both ingress and egress sampling, even though some of the operating systems don't necessarily have the command constructs to configure this.
No idea about Cisco's other operating systems, but NX-OS only supports joint ingress + egress sampling and there's no way to turn off egress sampling. Hard to tell what the rationale for this is. At least on the earlier sflow-enabled broadcom platforms, the switch hardware API supports it and you can toggle it in bcmsh, so their decision not to enable this as a config setting seems to be a bit dysfunctional.
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