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FICON Port Numbering
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
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
"FC ID Last Byte" section on page
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 flapped to switch from the dynamic to static FC IDs and vice versa (see
Figure
Figure 24-4
static domain ID (5), the port address (0x44), and the last byte value (0).
FICON Cascading
The Cisco MDS SAN-OS software allows multiple switches in a FICON network. To configure multiple
switches, you must enable and configure fabric binding in that switch (see the
Configuration" section on page
Cisco MDS 9000 Family Configuration Guide
24-10
24-4).
Static FC ID Allocation for FICON
Static Domain
Port Address
5
Static FC ID allocation for interface fc3/5 includes the
24-37).
24-16).
Last Byte
0x44
0
Chapter 24
Configuring FICON
"Fabric Binding
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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