Cisco Systems DSC9148D8G48PK9 manual Interface States, Administrative States, Operational States

Chapter 2 Configuring Interfaces

Information About Interfaces

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 Chapter 5, “Configuring Trunking”).

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.

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 2-1.

Table 2-1 Administrative States

Administrative State	Description
Up	Interface is enabled.
Down	Interface is disabled. If you administratively disable an interface by shutting
	down that interface, the physical link layer state change is ignored.

Operational States

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

Table 2-2 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 or TF mode.

Reason Codes

Reason codes are dependent on the operational state of the interface as described in Table 2-3.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
2-6	OL-29284-01, Release 6.x