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Rate Limiting
Examples of Adaptive Rate Limiting Applications
The following sections show some examples of how you can use Adaptive Rate Limiting. The CLI commands for
implementing each application are shown in “Complete CLI Examples” on page 4-18.
Adaptive Rate Policies For an Uplink
Figure 4.2 shows an example of how you can use the Adaptive Rate Limiting. In this example, four rate policies
are applied to the device’s uplink to the Internet. In this case, the uplink is a trunk group consisting of two one-
Gigabit Ethernet ports.
Rate Policies on Trunk Group (ports 1/1 and 1/2)
=====================================
Inbound TCP traffic
-Normal Burst - set IP precedence to 5 and forward
-Excess Burst - set IP precedence to 0 and forward
Inbound FTP traffic
-Normal Burst - set IP precedence to 5 and forward
-Excess Burst - drop
Outbound DNS traffic
-Normal Burst - set IP precedence to 5 and forward
-Excess Burst - drop
All other IP traffic
-Normal Burst - set IP precedence to 5 and forward
-Excess Burst - drop
Internet
access router
Internet
Rate policies are applied
to a trunk group of two one-
Gigabit ports (ports 1/1 and 1/2)
Figure 4.2 Adaptive Rate Limiting applied to uplink
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