The following are set of command that has to be applied on Dell Devices to enable sFlow export:
sflow 1 destination NFA timeout 4294967295
sflow 1 destination {NETFLOW_SERVER_IP} port {NETFLOW_SERVER_LISTENER_PORT}
Enter global configuration mode on the router or MSFC, and issue the following commands for each interface on which you want to enable flow:
sflow 1 sampling {INTERFACE_NAME} 256
sflow 1 polling {INTERFACE_NAME} 60
The above commands are also applicable for Dell N1524.