Brocade FastIron Ethernet Switch Traffic Management Guide - Manual (Page 66)

can be applied, in the hw-traffic-conditioner section of the results. The configurable tables and their
defaults and maximum values can be obtained using the show default command.
Setting the maximum number of traffic policies supported on a Layer 3
device
NOTE
This configuration is supported on FastIron devices with the exception of the FCX and ICX 6650
platforms. Setting the system-max for traffic policies is not required on FCX platforms as the default
number of traffic policies is also the maximum number.
If desired, you can adjust the maximum number of active traffic policies that a Layer 3 device will
support. To do so, enter commands such as the following at the global CONFIG level of the CLI.
device(config)#system-max hw-traffic-conditioner 25
device(config)#write memory
device(config)#reload
NOTE
You must save the configuration and reload the software to place the change into effect.
Syntax: [no] system-max hw-traffic-conditioner num
The num variable is a value from 0 through n , where 0 disables hardware resources for traffic policies,
and n is a number up to 50. The maximum number you can configure depends on the configuration
and available memory on your device. If the configuration you enter causes the device to exceed the
available memory, the device will reject the configuration and display a warning message on the
console.
NOTE
Brocade does not recommend setting the system maximum for traffic policies to 0 (zero), because this
renders traffic policies ineffective.
ACL-based rate limiting using traffic policies
ACL-based rate limiting provides the facility to limit the rate for IP traffic that matches the permit
conditions in extended IP ACLs. This feature is available in the Layer 2 and Layer 3 code.
To configure ACL-based rate limiting, you create individual traffic policies , and then reference the
traffic policies in one or more ACL entries (also called clauses or statements). The traffic policies
become effective on ports to which the ACLs are bound.
When you configure a traffic policy for rate limiting, the device automatically enables rate limit
counting , similar to the two-rate three-color marker (trTCM) mechanism described in RFC 2698 for
adaptive rate limiting, and the single-rate three-color marker (srTCM) mechanism described in RFC
2697 for fixed rate limiting. This feature counts the number of bytes and trTCM or srTCM conformance
level per packet to which rate limiting traffic policies are applied. Refer to
ACL statistics and rate limit
counting on page 70.
Setting the maximum number of traffic policies supported on a Layer 3 device
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