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18-5
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-6965-03, Cisco MDS SAN-OS Release 2.x
Chapter 18 Interface Configuration
Fibre Channel Interfaces

About Interface States

The interface state depends on the administrative configuration of the interface and the dynamic state of
the physical link.

Administrative States

The administrative state refers to the administrative configuration of the interface as described in
Table 18-1.

Operational States

The operational state indicates the current operational state of the interface as described in Table 18-2.

Reason Codes

Reason codes are dependent on the operational state of the interface as described in Table B-1.

32-Port Configuration Guidelines

The 32-port guidelines applies to the following hardware:
•The 32-port 2 Gbps or 1 Gbps switching module
•The Cisco MDS 9140 Switch
When configuring these host-optimized ports, the following port mode guidelines apply:
You can configure only the first port in each 4-port group (for example, the first port in ports 1-4, the
fifth port in ports 5-8 and so on) as an E port. If the first port in the group is configured as an E port, the
other three ports in each group (ports 2-4, 6-8 and so on) are not usable and remain shutdown.
•If any of the other three ports are enabled, you cannot configure the first port as an E port. The other
three ports continue to remain enabled.
Table 18-1 Administrative States
Administrative State Description
Up Enables an interface.
Down Disables an interface. If you administratively disable an interface by shutting
down that interface, the physical link layer state change is ignored.
Table 18-2 Operational States
Operational State Description
Up Interface is transmitting or receiving traffic as desired. To be in this state, an
interface must be administratively up, the interface link layer state must be up, and
the interface initialization must be completed.
Down Interface cannot transmit or receive (data) traffic.
Trunking Interface is operational in TE mode.