About Interface States; Administrative States - Cisco MDS 9000 Series Configuration Manual

Chapter 2 Configuring Interfaces
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
Auto Mode
Interfaces configured in auto mode can operate in one of the following modes: F port, FL port, E port,
TE port, or TF port. The port mode is determined during interface initialization. For example, if the
interface is connected to a node (host or disk), it operates in F port or FL port mode depending on the N
port or NL port mode. If the interface is attached to a third-party switch, it operates in E port mode. If
the interface is attached to another switch in the Cisco MDS 9000 Family, it may become operational in
TE port mode (see
TL ports and SD ports are not determined during initialization and are administratively configured.
Note Fibre Channel interfaces on Storage Services Modules (SSMs) cannot be configured in auto mode.

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
Table 2-1
Administrative State
Up
Down
Operational States
The operational state indicates the current operational state of the interface as described in
Table 2-2
Operational State
Up
Down
Trunking
Reason Codes
Reason codes are dependent on the operational state of the interface as described in
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
Chapter 5, "Configuring
2-1.
Administrative States
Description
Interface is enabled.
Interface is disabled. If you administratively disable an interface by shutting
down that interface, the physical link layer state change is ignored.
Operational States
Description
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.
Interface cannot transmit or receive (data) traffic.
Interface is operational in TE or TF mode.
Trunking").
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Fibre Channel Interfaces
Table 2-2.
Table 2-3.
2-7