Rate Limiter

To ensure reliable operation at a high level of traffic, the device allows you to limit the rate of traffic at the ports.

Entering a limit rate for each port determines the amount of traffic the device is permitted to transmit and receive.

If the traffic at this port exceeds the maximum rate entered, then the device suppresses the overload at this port.

A global setting enables/disables the rate limiter function at all ports.

Note: The limiter functions only work on Layer 2 and are used to limit the effect of storms by frame types that the Switch floods (typically broadcasts). In doing so, the limiter function disregards the protocol information of higher layers, such as IP or TCP. This can affect on TCP traffic, for example.To minimize these effects, use the following options:
Note: Ports that are included in a Link Aggregation (refer Link Aggregation) are excluded from the rate limitation, regardless of the entries in the “Rate Limiter” dialog.

Rate limiter settings (PowerMICE and MACH 4000)

Setting options per port:

Note: If applicable, the device rounds the values entered up to the next value that the hardware can process. After entering the values, to see which values the device actually uses, click “Set” and then “Reload”.

Buttons

Tab. Buttons (Forts.)

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes afterwards, you open the Basic Settings:Load/Save dialog and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Help”

Opens the online help.