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Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 36 Configuring FICON
FICON Port Numbering
Step 1 Click FICON > Port Numbers.
You se e t he FICON port numbers dialog box (see Figure 36-4).
Step 2 Click the Logical tab to see the reserved port numbers for the slot (see Figure 36-5).
Figure 36-5 Reserved Port Numbers for the Selected Slot
Step 3
Enter the chassis slot port numbers. These are the reserved port numbers for one chassis slot. There can
be up to 64 port numbers reserved for each slot in the chassis.
Step 4 Click Apply.
FC ID Allocation
FICON requires a predictable and static FC ID allocation scheme. When FICON is enabled, the FC ID
allocated to a device is based on the port address of the port to which it is attached. The port address
forms the middle byte of the fabric address. Additionally, the last byte of the fabric address should be
the same for all devices in the fabric. By default, the last byte value is 0 and can be configured (see the
“Assigning FC ID Last Byte” section on page 36-20).
Note You cannot configure persistent FC IDs in FICON-enabled VSANs.
Cisco MDS switches have a dynamic FC ID allocation scheme. When FICON is enabled or disabled on
a VSAN, all the ports are shut down and restarted to switch from the dynamic to static FC IDs and vice
versa (see Figure 36-6).
Figure 36-6 Static FC ID Allocation for FICON
Static Domain Port Address Last Byte
5 0x44 0
Static FC ID allocation for interface fc3/5 includes the
static domain ID (5), the port address (0x44), and the last byte value (0).
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