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

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DCFM Enterprise User Manual 443
53-1001357-01
Chapter
14
FICON Environments
In this chapter
•FICON Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
•Configuring a PDCM Allow/Prohibit Matrix . . . . . . . . . . . . . . . . . . . . . . . . . 444
•Copying a PDCM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447
•Activating a PDCM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
•Deleting a PDCM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
•Changing the PDCM matrix display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
•Configuring a cascaded FICON fabric. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451
•Merging two cascaded FICON fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
•Port Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456
•Swapping blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459
FICON Configurations
IBM Fibre Connection (FICON) is a protocol used between IBM (and compatible) mainframes and
storage. FICON configurations can be categorized into three types, based on complexity:
• Point-to-point configurations that do not use a switch.
• Switched point-to-point configurations, also called single switch configurations, connect a host
channel to a storage control unit using a single switch. In this type of configuration, the
channel is configured to use single-byte addressing.
• Cascaded configurations, also called high integrity fabrics, connect host channels and storage
control units that reside in different domains. Cascaded FICON fabrics must be configured as
high integrity fabrics. In this type of configuration, the channel is configured to use two-byte link
addressing. Figure 172 and Figure 173 are examples of cascaded FICON configurations. IBM
does not support configurations that have more than two domains in a path from a FICON
Channel interface to a FICON Control Unit interface to CTC except under special circumstances.
FIGURE 172 Cascaded configuration, two domains