Brocade FICON Administrator's Guide v7.1.0 (53-1002753-01, March 2013)

38 FICON Administrator’s Guide
53-1002753-01
Determining physical port assignment
3
Disabling ports 0xFE and 0xFF
Addresses 0xFE and 0xFF are not available for external connections, so they must be disabled to
configure FICON CUP. Note that in logical switches or in cases where port address binding or port
swapping has occurred, addresses 0xFE and 0xFF are not necessarily tied to specific physical
ports, such as 254 and 255. After FMS mode has been successfully enabled, these two ports
remain disabled and cannot be used either as an F_Port or an E_Port. Because these ports are not
available after enabling FMS mode, you should first move any fiber connected to either of them to
another free port.
You must manually disable ports associated with 0xFE and 0xFF to enable FMS mode only if there
is an active device connected to these ports. Otherwise, if physical ports have been assigned these
addresses by default prior to enabling FMS, they will be automatically disabled when FMS is
enabled.
On a Brocade DCX and DCX-4S Backbones, when Virtual Fabrics is not enabled or zero-based
addressing is not used, you must disable physical ports associated with addresses 0xFE and 0xFF
(if ports were assigned by default) before enabling FMS mode. Note that physical ports associated
with 0xFE and 0xFF may be different in logical switches using zero-based addressing. Disable these
addresses manually if there is an active device attached. If an active device is not attached to the
ports, they will be disabled automatically when you enable FMS mode.
You can only disable ports if there is a card present in the slot.
If FMS mode is enabled in a logical switch with port-based addressing, the physical ports with
addresses 0xFE and 0xFF are essentially wasted and may be used better elsewhere. This is the
same for a switch with dynamic addressing (256-area addressing mode 1) where all available
addresses are used, and thus no addresses are available for binding to these ports. On logical
switches with dynamic addressing mode, such ports may be reclaimed for external connections by
binding a new address to the port, if unused addresses are available.
Ports that are disabled for having addresses “FE” or “FF” when FMS is enabled are not eligible for
port swapping.
Configuring FICON CUP in Virtual Fabrics
For details on FICON and FICON CUP in virtual fabrics, refer to “FICON and FICON CUP in Virtual
Fabrics” on page 26
Determining physical port assignment
The following instructions help you locate the physical port from CUP_PortAddress.
1. Connect to the switch and log in using an account assigned to the admin role.
2. Set the context to the appropriate logical switch.
3. Enter the switchShow command.
4. Look for the PID in the Address column.
5. Read across to the Slot and Port columns.
6. Enter the portAddress
--findPID command.