Graceful Shutdown; Setting The Interface Administrative State - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

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

Graceful Shutdown

Interfaces on a port are shutdown by default (unless you modified the initial configuration).
The Cisco SAN-OS software implicitly performs a graceful shutdown in response to either of the
following actions for interfaces operating in the E port mode:
•
•
A graceful shutdown ensures that no frames are lost when the interface is shutting down. When a
shutdown is triggered either by you or the Cisco SAN-OS software, the switches connected to the
shutdown link coordinate with each other to ensure that all frames in the ports are safely sent through
the link before shutting down. This enhancement reduces the chance of frame loss.
A graceful shutdown is not possible in the following situations:
•
•
•
This feature is only triggered if both switches at either end of this E port interface are MDS switches and
Note
are running Cisco SAN-OS Release 2.0(1b) or later.

Setting the Interface Administrative State

To gracefully shut down an interface, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
Step 3
switch(config-if)# shutdown
To enable traffic flow, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
Step 3
switch(config-if)# no shutdown
Cisco MDS 9000 Family CLI Configuration Guide
12-12
If you shut down an interface.
If a Cisco SAN-OS software application executes a port shutdown as part of its function.
If you physically remove the port from the switch.
If in-order-delivery (IOD) is enabled (see
If the Min_LS_interval interval is higher than 10 seconds
Information" section on page
"In-Order Delivery" section on page
25-20).
Purpose
Enters configuration mode.
Selects a Fibre Channel interface and enters interface
configuration submode.
Gracefully shuts down the interface and administratively
disables traffic flow (default).
Purpose
Enters configuration mode.
Selects a Fibre Channel interface and enters interface
configuration submode.
Enables traffic flow to administratively allow traffic when
the no prefix is used (provided the operational state is up).
Chapter 12 Configuring Interfaces
25-13).
(see"Displaying Global FSPF
OL-16184-01, Cisco MDS SAN-OS Release 3.x