You can perform Netgear Switch configuration using the following steps:
sflow receiver 1 owner MENFA timeout 4294967295 ip {NETFLOW_SERVER_IP} {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:
interface {INTERFACE_NAME}
sflow sampler 1 rate 128
sflow poller 1 interval 30
exit
exit
exit