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Fibre Channel 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 .
If an FCIP peer is a SAN extender device that only supports Fibre Channel B ports, you need to enable
the B port mode for the FCIP link. When a B port is enabled, the E port functionality is also enabled and
they coexist. If the B port is disabled, the E port functionality remains enabled (see
"Configuring IP
Auto Mode
Interfaces configured in auto mode can operate in one of the following modes: F port, FL port, E port,
or TE 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.
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 11-1
Administrative State
Up
Down
Operational States
The operational state indicates the current operational state of the interface as described in
Table 11-2
Operational State
Up
Down
Trunking
Cisco MDS 9000 Family Configuration Guide
11-6
Storage").
Chapter 12, "Configuring
11-1.
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 mode.
Trunking").
Chapter 11
Configuring Interfaces
Chapter 37,
Table
OL-6973-03, Cisco MDS SAN-OS Release 2.x
11-2.
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