Reference Guide

Brocade Fabric OS Command Reference 59

53-1004112-02

aptPolicy

Changes or displays the Advanced Performance Tuning (APT) policy.

Synopsis aptpolicy [policy]

Description Use this command to display and change the advanced performance tuning (APT) policies on a switch.

Distributed path selection (DPS) is supported in logical fabrics. APT policy settings affecting the DPS behavior can

be configured per logical switch, and settings apply to the partition for which they are set. Note that policy settings

for the base switch or any switch in the base fabric affect all traffic going through the base fabric including any

logical fabric traffic that uses the base fabric.

When invoked without arguments, this command displays the APT policies supported on this switch, as well as the

current policy.

Notes You must disable the switch before using this command to change the current policy. Changes take effect

immediately for all EX/VEX_Ports after the switch is re-enabled.

For details on performance tuning, refer to the Fabric OS Administrator's Guide.

The execution of this command is subject to Virtual Fabric restrictions that may be in place. Refer to "Using Fabric

OS Commands" and "Command Availability" for details.

Operands This command has the following operands:

policy

Specifies the APT policy. The following polices are supported:

Port-based routing policy. With this policy, the path chosen for an ingress frame is based on

both of the following items:

• The ingress port on which the frame was received.

• The destination domain for the frame.

The chosen path remains the same if Dynamic Load Sharing (DLS) is not enabled. If DLS is

enabled, a different path may be chosen for a fabric event. Refer to dlsSet for a definition of

a fabric event.

This policy may provide better ISL utilization when there is little or no oversubscription of

the ISLs.

Note that static routes are supported only with this policy.