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
28-8
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 28 Configuring FICON
FICON Port Numbering
•
FC ID Allocation, page 28-13
Note
You must enable FICON on the switch before reserving FICON port number (see the
About Enabling
FICON on a VSAN, page 28-14
).
Default FICON Port Numbering Scheme
Default FICON port numbers are assigned by the Cisco MDS SAN-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 28-3
).
Figure 28-3
Default FICON Port Number in Numbering on the Cisco MDS 9000 Family9509 Switch
The default FICON port number is assigned based on the front panel location of the port and is specific
to the slot in which the module resides. Thirty-two (32) port numbers are assigned to each slot on all
Cisco MDS 9000 Family switches except for the Cisco MDS 9513 Director, which has 16 port numbers
assigned for each slot. These default numbers are assigned regardless of the module’s physical presence
in the chassis, the port status (up or down), or the number of ports on the module (4, 12, 16, 24, or 48).
If a module has fewer ports than the number of port numbers assigned to the slot, then the excess port
numbers are unused. If a module has more ports than the number of port numbers assigned to the slot,
the excess ports cannot be used for FICON traffic unless you manually assign port numbers.
Note
You can use the
ficon slot assign port-numbers
command to make use of any excess ports by assigning
numbers to the slots. Before doing this, however, we recommend that you review the default port number
assignments for Cisco MDS 9000 switches shown in
Table 28-1
, and that you read the following sections
to gain a complete understanding of FICON port numbering:
“About the Reserved FICON Port
Numbering Scheme” section on page 28-10
,
“FICON Port Numbering Guidelines” section on
page 28-11
, and
“Assigning FICON Port Numbers to Slots” section on page 28-11
.
0 1 2 3
4 5 6 7
8 9 10 11
11 13 14 15
Module 1 16-Port module
32 33 34 35
36 37 38 39
40 41 42 43
44 45 46 47
Module 2 16-Port module
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