Brocade Communications Systems Brocade BladeSystem 4/24 User Manual page 516

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Configuring a cascaded FICON fabric
4. Select the DLS check box to enable dynamic load sharing (DLS) or Lossless DLS on all switches
5. Select to enable port-based or exchange-based routing on switches.
6. Choose one of the following options from the 256 Area Assignment list:
7.
8. A warning message displays explaining that SCC and DCC policies will be created and activated
478
in the fabric.
NOTE
DLS requires DLS support on the switch. Lossless DLS requires Lossless DLS support on the
switch.
DLS is only supported on the 40-port, 8 Gbps FC Switch, 80-port, 8 Gbps FC Switch, 384-port
Backbone Chassis, and 192-port 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.
If you select Port-Based Routing, enables port-based routing on 4 Gbps platform switches.
If you select Exchange-Based Routing, enables exchange-based routing on 8 Gbps platform
switches running Fabric OS 6.4 or later. Enables port-based routing on all other switches in the
fabric.
•
Disabled—select to disable the 256 Area Assignment addressing mode.
Disabling the 256 Area Assignment mode assigns an area to every port with no imposed
limit. This is the default.
•
Zero Based Area Assignment—select to use zero based area assignment.
Zero Based Area Assignment mode assigns areas as ports are added to the partition,
beginning at area zero. This mode allows FICON customers to make use of the upper ports
of a high density blade; but this mode may not be compatible with domain,index zoning in
InteropMode 2, because M-EOS switches are not capable of handling indexes greater than
255.
•
Port Based Area Assignment—select to use port based area assignment.
Port Based Area Assignment mode matches the port index to the area assignment. You
cannot use high density blades if you select this option.
Click OK if you want to proceed after reading the warning and bulleted items.
on the fabric. 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 fabric management server.
DCFM Enterprise User Manual
53-1001775-01