Configuring acl-based adaptive rate limiting – Brocade TurboIron 24X Series Configuration Guide User Manual
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Brocade TurboIron 24X Series Configuration Guide
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ACL-based rate limiting using traffic policies
The above commands configure a fixed rate limiting policy that allows port e5 to receive a
maximum traffic rate of 100 kbps. If the port receives additional bits during a given one-second
interval, the port drops the additional inbound packets that are received within that one-second
interval.
Syntax: [no] traffic-policy
Syntax: access-list
Syntax: [no] ip access-group
NOTE
For brevity, some parameters were omitted from the above access-list syntax.
The software allows you to add a reference to a non-existent TPD in an ACL statement and to bind
that ACL to an interface. The software does not issue a warning or error message for non-existent
TPDs.
Use the no form of the command to delete a traffic policy definition. Note that you cannot delete a
traffic policy definition if it is currently in use on a port. To delete a traffic policy, first unbind the
associated ACL.
characters.
rate-limit fixed specifies that the traffic policy will enforce a strict bandwidth.
Kbps.
exceed-action
value. Refer to
“Specifying the action to be taken for packets that are over the limit”
The count parameter is optional and enables ACL counting. Refer to
Configuring ACL-based adaptive rate limiting
Use the procedures in this section to configure ACL-based adaptive rate limiting. Before configuring
this feature, see what to consider in
“Configuration notes and feature limitations”
lists the configurable parameters for ACL-based adaptive rate limiting.
TABLE 143
ACL-Based adaptive rate limiting parameters
Parameter
Definition
Committed Information Rate (CIR)
The guaranteed kilobit rate of inbound traffic that is allowed on a port.
Committed Burst Size (CBS)
The number of bytes per second allowed in a burst before some packets will
exceed the committed information rate. Larger bursts are more likely to
exceed the rate limit. The CBS must be a value greater than zero (0).
Brocade recommends that this value be equal to or greater than the size of
the largest possible IP packet in a stream. The CBS value is specified in
kilobits.