Brocade Network Advisor SAN User Manual v12.3.0 - Manual (Page 1069)

Brocade Network Advisor SAN User Manual 1017
53-1003154-01
Chapter
25
FICON Environments
In this chapter
• FICON configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1017
• Configuring a switch for FICON operation . . . . . . . . . . . . . . . . . . . . . . . . . 1018
• Configuring an Allow/Prohibit Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1025
• Configuring an Allow/Prohibit Matrix manually . . . . . . . . . . . . . . . . . . . . . 1027
• Saving or copying Allow/Prohibit Matrix configurations to another device 1028
• Activating an Allow/Prohibit Matrix configuration . . . . . . . . . . . . . . . . . . . 1031
• Deleting an Allow/Prohibit Matrix configuration . . . . . . . . . . . . . . . . . . . 1032
• Changing the Allow/Prohibit Matrix display . . . . . . . . . . . . . . . . . . . . . . . 1032
• Cascaded FICON fabric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1033
• Cascaded FICON fabric merge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1036
• Port groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1041
• Swapping blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1044
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 460 and Figure 461 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 Channel-to-Channel (CTC) except under
special circumstances.
FIGURE 460 Cascaded configuration, two domains