Auto Mode; Interface States; Administrative States; Operational States - Cisco MDS 9000 Series Configuration Manual

Auto Mode

Auto Mode
Interfaces configured in auto mode can operate in F port, FL port, E port, TE port, or TF port mode. 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 mode or FL port mode depending on the N port mode 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 Series Multilayer Switches, it may become operational in TE port mode. For
more details about trunking, see
TL ports and SD ports are not determined during initialization and are administratively configured.

Interface States

An 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
Administrative States , on page
Table 3: Administrative States
Administrative State
Up
Down

Operational States

Operational state indicates the current operational state of an interface, as described in
States , on page
Table 4: Operational States
Operational State
Up
Down
Trunking

Reason Codes

Reason codes are dependent on the operational state of an interface, as described in
for Interface States , on page
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
20
Configuring Trunking, on page
20.
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.
20.
Description
Interface is transmitting or receiving traffic, as required. 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 mode or TF mode.
21.
Configuring Interfaces
197.
Table 4: Operational
Table 5: Reason Codes
Table 3: