Netgear M4300-52G-PoE+ (GSM4352PA) - 48x1G PoE+ Stackable Managed Switch with 2x10GBASE-T and 2xSFP+ (550W PSU) Administrator's Guide

Page of 688
SNMP 
460
Managed Switches 
A screen similar to the following displays.
b.  Select the Interface 1/0/1 check box.
c.   In the Sampling Rate field, enter 1024.
d.  In the Maximum Header Size field, enter 64. 
e.  Click Apply
A screen similar to the following displays.
Time-Based Sampling of Counters with sFlow
CLI: Configure Time-Based Sampling of Counters with sFlow
1. 
Configure the sampling port sFlow receiver index, and polling interval. You need to 
repeat this for all the ports to be polled. 
2. 
View the polling port configurations.
(Netgear Switch) (Config)# interface 1/0/1
(Netgear Switch) (Interface 1/0/1)# sflow poller 1
(Netgear Switch) (Interface 1/0/1)# sflow poller interval  300
(Netgear Switch) #show sflow pollers
Poller            Receiver            Poller
Data Source       Index               Interval
-----------       ---------           ---------
1/0/1             1                   300