Default Ficon Port Numbering Scheme - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

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
•
You must enable FICON on the switch before reserving FICON port number (see the
Note
FICON on a VSAN" section on page

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 29-3
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
to gain a complete understanding of FICON port numbering:
Numbering Scheme" section on page
page
Cisco MDS 9000 Family CLI Configuration Guide
29-8
FC ID Allocation, page 29-13
Default FICON Port Number in Numbering on the Cisco MDS 9000 Family Switch
29-11, and "Assigning FICON Port Numbers to Slots" section on page
29-14).
Module 1 16-Port module
0 1 2 3 4 5 6 7 8 9 10 11
Module 2 16-Port module
32 33 34 35 36 37 38 39 40 41 42 43
inTable 29-1, and that you read the following sections
"About the Reserved FICON Port
29-10, "FICON Port Numbering Guidelines" section on
Chapter 29 Configuring FICON
"About Enabling
Figure 29-3).
11 13 14 15
44 45 46 47
29-11.
OL-18084-01, Cisco MDS NX-OS Release 4.x