Selecting a suitable packet sampling rate is an important part of configuring sFlow on a network device. The table below shows recommended values for sampling rates in regards to the link speed.
Link speed | Sampling rate |
---|---|
10 Mbps | 1 in 200 |
100 Mbps | 1 in 500 |
1 Gbps | 1 in 1000 |
10 Gbps | 1 in 2000 |
If traffic levels are unusually high the sampling rate may be decreased (e.g. use 1 in 5000 instead of 1 in 2000 for 10 Gbps links). |