2. Click Add. The “Add Device Traffic Shaping” screen appears.
3. Select the device for which the traffic will be shaped. The drop-down list
includes all the Router’s devices, as well as the option to select all devices in
each category (e.g., “All LAN Devices,” “All WAN Devices”). In this example,
select the default WAN device option.
4. Click OK. The “Edit Device Traffic Shaping” screen appears
Configure the following parameters:
Tx Bandwidth - Tx bandwidth limits the Router’s bandwidth transmission rate.
The purpose is to limit the bandwidth of the WAN device to that of the weak-
est outbound link.. This forces the Router to be the network bottleneck, where
sophisticated QoS prioritization can be performed.
Rx Bandwidth - In the same manner, this Rx bandwidth limits the Router’s
bandwidth reception rate.
TCP Serialization - Enable TCP Serialization from its drop-down list, either
for active voice calls only or for all traffic. The screen will refresh, adding a
“Maximum Delay” text box. This function allows the maximum allowed trans-
mission time frame (in milliseconds) of a single packet to be defined. Any packet
requiring a longer time to be transmitted will be fragmented to smaller sections.
This avoids transmission of large, bursty packets that can cause delay or jitter for
real-time traffic, such as VoIP.
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