DS-3WF03C User Manual
Page 28
2.
Deny one or several devices with particular MAC address.
3.
Accept one or several devices with particular IP address.
4.
Deny one or several devices with particular IP address.
7.4
Traffic Shaping
Traffic shaping is used to control the traffic of ingress/egress based on each network port. As show
below, the ingress of wlan0 is limited to 1024Kbps, and the egress is limited to 2048Kbps. That
means the receiving rate of the wireless link is limited within 1Mbps, the sending rate is limited to
less than 2Mbps. But usually, the input limited effect is not obviously, that’s because we could not
control how quickly the traffic arrives. However, when a port sends out egress traffic, it can
control how quickly the traffic exits.
Burst defines the how many bytes allowed for downloading/uploading during a quick time. That
leads to momentary throughput can greater than the limit value.
Ingress traffic entering wlan0, control the input rate
Egress
traffic exiting wlan0, control the output rate
The relationship of rate and burst for ingress:
Set burst to 0, the rate of ingress is unlimited
Set burst to about 1/10 of rate limit, the rate curve is stable
Set burst larger than rate limit, the rate curve will hold a high value for a while then
down to stable
Below is the table that reflects the relationship between ingress rate limit and burst.
Ingress
Throughput when reach stable
RateLimit(kbps)
Burst(kbyte) （Mbps） Description
10000
0
29.587 Unlimited
10000
10
4.286 Stable
10000
100
8.037 Oblique up to stable
10000
1000
8.825 From 9.5 down to stable
10000
10000
8.6 From 28.5 down to stable
10000
40000
8.6
Hold on 10 seconds at 29.6, then
suddenly down to stable
The relationship of rate and burst for egress:
