Acl-based adaptive rate limiting configuration – Brocade FastIron Ethernet Switch Traffic Management Guide User Manual
Page 68
Syntax: [no] ip access-group num in
NOTE
For brevity, some parameters were omitted from the 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.
The traffic-policy TPDname parameter is the name of the traffic policy definition. This value can
be eight or fewer alphanumeric characters.
The rate-limit fixed cirvalue parameter specifies that the traffic policy will enforce a strict
bandwidth. The cirvalue variable is the committed information rate in kbps. This value can be from
64 through 1,000,000 Kbps.
NOTE
For ICX 6650, the cirvalue variable is the committed information rate in packets per second. This
value can be from 125 through15,000,000 packets per second.
The exceed-action action parameter specifies the action to be taken when packets exceed the
configured committed information rate (CIR) value. Refer to
Specifying the action to be taken for
packets that are over the limit
on page 69.
The remark-cos sets 802.1p priority of the dropped packet to 0. If the option is specified, then the
COS/PCP field value set to 0 for the low priority traffic for any packet exceeding the rate-limit set
by the traffic policy. If the option is not used, there is no change in the existing behavior.
The count parameter is optional and enables ACL counting. Refer to
ACL-based adaptive rate limiting configuration
Adaptive rate limiting enforces a flexible bandwidth limit. The port forwards traffic that is within the
limit. If the port receives more than the specified number of fragments in a one-second interval, the
device either drops or forwards subsequent fragments in hardware, depending on the exceed action
you specify.
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 for traffic policies
on
page 62.
The following table lists the configurable parameters for ACL-based adaptive rate limiting.
ACL based adaptive rate limiting parameters
TABLE 31
Parameter
Definition
Committed Information
Rate (CIR)
The guaranteed kilobit (packets per second in ICX 6650) rate of inbound traffic that is
allowed on a port.
ACL-based adaptive rate limiting configuration
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FastIron Ethernet Switch Traffic Management Guide
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