Foundry Networks Switch and Router Installation And Configuration Manual page 429

Adaptive Rate Policy for a Port-Based VLAN
Figure 14.4 shows a rate policy applied to a VLAN. When you apply a rate policy to a VLAN, the policy applies to
all the ports in the VLAN. The rate policy in this example performs the following actions on traffic received on
ports in the VLAN:
• For conforming traffic, sets the precedence to 5
• For excess traffic, sets the precedence to 0
Figure 14.4 Adaptive Rate Limiting applied to a VLAN
NOTE: The rate policy in this example applies at Layer 2, while the policies in Figure 14.2 on page 14-6 and
Figure 14.3 on page 14-8 apply at Layer 3. You cannot use ACLs for rate policies applied to directly to a VLAN.
However, you can use ACLs if you apply the rate policy to a VLAN's virtual interface instead.
Adaptive Rate Limiting Parameters
The application examples in "Examples of Adaptive Rate Limiting Applications" on page 14-6 describe the rate
policies but do not describe the parameters used to configure the policies. The parameters specify the portion of
an interface's bandwidth you are allocating to specific traffic, the conforming and excess quantities of bytes for the
traffic, and the granularity of the Adaptive Rate Limiting.
Adaptive Rate Limiting uses the following parameters:
December 2000
Internet
Internet
access router
Link Link
Activity Activity
FDX
100
Link / Act
Console
FDX
100
Power
Link / Act
Rate Policy for VLAN 2
================
Inbound IP traffic
-Normal Burst - set IP precedence to 5 and forward
-Excess Burst - set IP precedence to 0 and forward
FDX FDX
100 100
Link / Act Link / Act
FDX FDX
100 100
Link / Act Link / Act
IronClad Rate Limiting
The hosts are in
port-based VLAN 2.
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