Default Ficon Port Numbering Scheme - Cisco MDS 9000 Series Configuration Manual

Default FICON Port Numbering Scheme

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
Number in Numbering on the Cisco MDS 9000 Family Switch, on page
Figure 56: Default FICON Port Number in Numbering on the Cisco MDS 9000 Family 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 the port numbers.
Note You can use the ficon slot assign port-numbers command to make use of any Follow the steps in
FICON Port Numbers to Slots, on page 256
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
22: Default FICON Port Numbering in the Cisco MDS 9000 Family , on page
following sections to gain a complete understanding of FICON port numbering:
Port Numbering Scheme, on page
Port Numbers to Slots, on page
Note
Only Fibre Channel, PortChannel, and FCIP ports are mapped to FICON port numbers. Other types of interfaces
do not have a corresponding port number.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
252
to make use of excess ports by manually assigning more port
Table 24: Default FICON Settings , on page 298 Table
255, FICON Port Numbering Guidelines, on page
256.
Configuring FICON
Figure 56: Default FICON Port
252).
Assigning
253, and that you read the
About the Reserved FICON
256, and Assigning FICON