Download Draytek Vigor300B User`s guide

TX Limit
Define the limitation for the speed of the upstream. If you do
not set the limit in this field, the system will use the default
speed for the specific limitation you set for each index. Do
not type the value with “0”, otherwise the profile cannot be
saved.
RX Limit
Define the limitation for the speed of the downstream. If you
do not set the limit in this field, the system will use the
default speed for the specific limitation you set for each
index. Do not type the value with “0”, otherwise the profile
cannot be saved.
Apply
Click it to save the configuration and exit the dialog.
Cancel
Click it to exit the dialog without saving the configuration.
4.
Enter all the settings and click Apply.
5.
A bandwidth limit profile has been created.
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Vigor300B Series User’s Guide