Brocade Communications Systems Network Advisor 12.3.0, User Manual

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Brocade Network Advisor SAN User Manual 1035
53-1003154-01
Cascaded FICON fabric
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5. Select the DLS check box to enable Dynamic Load Sharing (DLS) or Lossless DLS only on
switches that support lossless DLS. For more information, refer to “Enabling DLS” on
page 1035. You must enable DLS to select routing policies.
6. Select one of the following options to enable port-based, exchange-based, or device-based
routing on switches:
•
Port-Based enables port-based routing on 4 Gbps platform switches.
•
Exchange-Based enables exchange-based routing for the fabric if all switches are 8 Gbps
or greater platforms running Fabric OS 6.4 or later. If these requirements are not met, an
error message displays.
•
Device-Based enables device-based routing for the fabric if all switches in the fabric are 8
Gbps or greater platforms running Fabric OS 7.1 or later. If these requirements are not
met, an error message displays.
NOTE
Exchange-based routing, port-based routing, or device-based routing is enabled on all switches
of the selected fabric. You cannot enable a mixed routing policy.
7. Click OK if you want to proceed.
A warning message displays listing the switches of the selected fabric that are to be disabled
and re-enabled in order to enable the desired routing policy and IDID.
8. Click Yes to continue.
If configuration is successful, a confirmation message displays.
If FMS Mode was selected, each switch is checked for a CUP license. Any switches that do not
have a CUP license are listed, with a reminder that a CUP license is necessary to communicate
with the S/B FICON Management Server.
NOTE
FMS mode cannot be enabled on switches running Fabric OS 7.0 and later unless the switches
have an active CUP license.
Enabling DLS
Consider the following when enabling Dynamic Load Sharing (DLS) in step 5 :
•
DLS requires DLS support on the switch. Lossless DLS requires Lossless DLS support on the
switch.
•
Enabling DLS will enable IOD without Lossless DLS on all other switches, enable DLS on
switches that support DLS, and disable DLS on all other switches.
•
DLS is only supported on the 40-port, 8 Gbps FC Switch, 80-port, 8 Gbps FC Switch, 512-port
Backbone Chassis, and 4-slot Backbone Chassis.
•
Enabling DLS may result in dropped frames when paths fail over. It is recommended that you
set the preferred IOD delay time to minimize frame drops.
•
To enable DLS, all switches in the fabric must be 8 Gbps or faster and running Fabric OS 6.4 or
later.