Brocade Communications Systems 6650 manual Configuring adaptive rate limiting

Configuring adaptive rate limiting

Syntax: [no] traffic-policy TPD-namerate-limit fixed cir-valueexceed-action action [count]

Syntax: access-list num permit deny.... traffic policy TPD-name

Syntax: [no] ip access-group num in

NOTE

For brevity, the access-listcommand does not include all parameters.

ATTENTION

Brocade ICX 6650 allows you to add a reference to a non-existent TPD in an ACL statement and to bind that ACL to an interface. Brocade ICX 6650 does not issue a warning or an 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-policyTPD-nameparameter is the name of the traffic policy definition. This value can be eight or fewer alphanumeric characters.

The rate-limit fixed cir-valueparameter enforces a strict bandwidth.The cir-valuevariable is the committed information rate in packets per second. This value can be from 125 through 15,000,000 packets per second.

The exceed-actionaction parameter specifies what happens to packets that exceed the configured committed information rate (CIR) value. Refer to “Handling packets that exceed the rate limit” on page 147.

The count parameter is optional and enables ACL counting. Refer to “Enabling and using ACL statistics” on page 148.

Configuring adaptive rate limiting

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.

NOTE

For information on related traffic policy features and limitations, see “Configuration notes for traffic policies” on page 143.

Table 20 lists the configurable parameters for ACL-based adaptive rate limiting.

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