DCFM Enterprise User Manual (53-1001775-01, June 2010)

DCFM Enterprise User Manual 481
53-1001775-01
Merging two cascaded FICON fabrics
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8. Select which fabric’s Administrative domains, zone database, and ACL database you want to
preserve and use after the fabrics are merged.
9. Read the bulleted list of actions so you understand the actions that are taken to avoid conflicts
when the fabrics are merged.
10. Click Next.
The Check merge screen displays.
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.
11. Click Next to continue.
The Configure long distance (optional) dialog box displays. 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.
12. Perform the appropriate following action based on whether the connection is a long distance
connection or not:
• If it is not a long distance connection, click Next to view the Configure merge screen.
Proceed to step 13.
• If it is a long distance connection, expand the fabrics under Selected Fabrics to the switch
port level.
a. Select the E_ports used for the connection on the local switch and on the remote
switch, and click the right arrow.
The selected E_ports are moved to Selected Ports.
If there is no E_port in the selected fabrics, a warning message displays.
b. Specify the Cable length between switch ports.
The default value is 50 km, and the range is 10 to 500 km.
c. Select ARBs or IDLEs to configure the Fibre Channel Primitive Signal Fill Words.
For Fabric OS version 6.1.0b or earlier, the setting is always ARBs. You cannot change
to IDLEs.
For Fabric OS version 6.1.0c or later, the default setting is IDLEs, however, you can
change it to ARBs.
d. Click Next.
The Configure merge screen displays.
13. Read and review the information on the Configure merge screen. If you understand and agree,
click Next to confirm the information.
A Summary screen displays.
14. Read the information, and click Finish to dismiss the wizard.