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Data Center Fabric Manager Enterprise User Manual v10.3.X (53-1001357-01, November 2009)

ManualsBrandsHP ManualsSoftwareHP B-series Data Center Fabric Manager Enterprise Software
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DCFM Enterprise User Manual 453
53-1001357-01
Merging two cascaded FICON fabrics
14
4. Click Next.
The Set up merge options screen is displayed.
5. Select FMS Mode to manage the fabric by a host-based management program using FICON
CUP protocol.
6. Select the DLS check box to enable dynamic load sharing (DLS) or Lossless DLS on all switches
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.
7. Select which fabric’s Administrative domains, zone database, and ACL database you want to
preserve and use after the fabrics are merged.
8. Read the bulleted list of actions so you understand the actions that are taken to avoid conflicts
when the fabrics are merged.
9. Click Next.
The Check merge screen is displayed.
A Status details table shows progress through merge check points. A rotating arrow under
Status indicates a Merge check step is in progress. A blue check mark indicates successful
completion of that Merge check. A red stop sign indicates a failed step. If the configuration is
successful, all configuration items have blue check marks.
10. Click Next to continue.
The Configure long distance (optional) dialog box is displayed. If the distance between the
merged fabrics is 10 km or greater, you must configure the connection as a long distance
connection. Selecting a distance invokes an algorithm to compute the required number of BB
Credits available to the port. The longer the link, the greater latency, resulting in the potential
for more outstanding frames in the link, and the need for more BB credits. FICON may require
more BB credits than the algorithm provides, and it is a good practice to specify a distance that
is longer than the actual distance to be sure enough BB credits are allocated.