Cisco Systems MDS 9000 Installed and Uninstalled Ports, FC ID Allocation

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Cisco MDS 9000 Family Fabric Manager Configuration Guide

OL-6965-03, Cisco MDS SAN-OS Release 2.x

Chapter 22 FICON Configuration

About FICON

FCIP and PortChannels cannot be used in a FICON-enabled VSAN unless they are explicitly bound to

a port number.

By default, port numbers are the same as port addresses (see the “Editing FICON Configuration Files”

section on page 22-17).

An implemented port refers to any port address that is available in the chassis.

An unimplemented port refers to any port address that is not available in the chassis.

Tip An unimplemented port is prohibited from communicating with an implemented port in a FICON setup

and cannot be configured.

Installed and Uninstalled Ports

An installed port refers to a port for which all required hardware is present. A specified port number in

a VSAN can be implemented, and yet not installed, if any of the following conditions apply:

•The module is not present—for example, if module 1 is not physically present in slot 1 in a Cisco

MDS 9509 Director, ports 0 to 31 are considered uninstalled.

•The small form-factor pluggable (SFP) port is not present—for example, if a 16-port module is

inserted in slot 2 in a Cisco MDS 9509 Director, ports 48 to 63 are considered uninstalled.

•The port is not in a FICON-enabled VSAN—for example, if port 4 (of a 16-port module in slot 1)

is configured in FICON-enabled VSAN 2, then only port 4 is installed and ports 0 to 3 and 5 to 15

are uninstalled—even if they are implemented in VSAN 2.

Another scenario is if VSANs 1 through 5 are FICON-enabled, and trunking-enabled interface fc1/1

has VSANs 3 through 10, then port address 0 is uninstalled in VSAN 1 and 2.

•The port is part of a PortChannel—for example, if interface fc 1/1 is part of PortChanne1 5, port

address 0 is uninstalled in all FICON VSANs.

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.

Note You cannot configure persistent FC IDs in FICON-enabled VSANs.