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36-8
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
FICON Port Numbering
With reference to the FICON feature, ports in Cisco MDS switches are identified by a statically defined
8-bit value known as the port number. A maximum of 255 port numbers are available. You can use the
following port numbering schemes:
• Default port numbers based on the chassis type
• Reserved port numbers
This section includes the following topics:
• Default FICON Port Numbering Scheme, page 36-8
• Port Addresses, page 36-11
• Implemented and Unimplemented Port Addresses, page 36-11
• About the Reserved FICON Port Numbering Scheme, page 36-11
• Installed and Uninstalled Ports, page 36-12
• FICON Port Numbering Guidelines, page 36-12
• Assigning FICON Port Numbers to Slots, page 36-13
• About Port Numbers for FCIP and PortChannel, page 36-13
• About the Reserved FICON Port Numbering Scheme, page 36-11
• FC ID Allocation, page 36-14
Note You must enable FICON on the switch before reserving FICON port number (see the “About Enabling
FICON on a VSAN” section on page 36-17).
Default FICON Port Numbering Scheme
Default FICON port numbers are assigned by the Cisco MDS NX-OS software based on the module and
the slot in the chassis. The first port in a switch always starts with a zero (0) (see Figure 36-3).
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