Brocade FICON Administrator’s Guide (Supporting Fabric OS v7.3.0) - Manual (Page 56)

FICON CUP zoning and PDCM considerations
The FICON PDCMs control whether or not communication between a pair of ports in the switch is
prohibited or allowed. PDCMs are a per-port construct. Each port on the switch has its own PDCM that
defines whether communication is allowed between that particular port and each of the other ports in
the switch, including itself. The Allow/Prohibit Matrix presents a matrix that allows you to set and clear
the PDCMs for all external ports. If there are any differences between restrictions set up with Brocade
Advanced Zoning and PDCMs, the most restrictive rules are automatically applied.
FMS mode must be enabled for the Allow/Prohibit Matrix to be operational, and there must be an
active zoning configuration. Domain,Index (D,I) zoning is recommended for FICON, but is not
specifically required. Hard-port or hard WWN zoning enforcement is required however. PDCMs will not
be enforced on ports with session-based enforcement.
If Brocade Advanced Zoning is in use, refer to the Fabric OS Administrator's Guide for more
information on configuration.
Port and switch naming standards for FMS mode
The FICON management server and the FICON programming interface employ 8-bit EBCDIC
characters in port address names and switch names. Fabric OS employs 7-bit characters. Therefore,
when FMS mode is enabled, all characters greater than 0x40 and not equal to 0xFF; refer to the
EBCDIC Code Page section) are allowed in port address names, and it is possible for a channel to set
a name with nonprintable characters. If a name contains nonprintable characters, those characters are
displayed as dots (...). The following characters are also displayed as dots: semicolon (;), comma (,),
equal sign (=), and at sign (@).
The port name for the CUP must be unique within the chassis.
FICON CUP Fabric OS commands
The table below summarizes the Fabric OS CLI commands that can be used for managing FICON
fabrics. For detailed information on these commands, refer to the Fabric OS Command Reference.
Fabric OS commands related to FICON CUP TABLE 6
Command Description
ficonCupSet fmsmode Sets FICON Management Server mode on or off for the switch.
ficonCupSet crp Sets the current reporting path (CRP).
ficonCupSet MIHPTO Sets the Missing Interrupt Handler Primary Timeout value.
ficonCupSet modereg Sets the mode register bits for the switch.
ficonCupShow lp Displays the host logical path information for the CUP.
ficonCupShow fmsmode Displays the FICON Management Server enabled or disabled state for the switch.
ficonCupShow modereg Displays the mode register bit settings for the switch.
FICON CUP zoning and PDCM considerations
54 FICON Administrator's Guide
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