Allowing The Host To Change Ficon Port Parameters; Allowing The Host To Control The Timestamp - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Configuring FICON
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
To allow the host to move the switch to an offline state, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# ficon vsan 2
switch(config-ficon)#
Step 3
switch(config-ficon)# no host control
switch offline
switch(config-ficon)# host control
switch offline

Allowing the Host to Change FICON Port Parameters

By default, mainframe users are not allowed to configure FICON parameters on Cisco MDS
switches—they can only query the switch.
Use the host port control command to permit mainframe users to configure FICON parameters.
To allow the host (mainframe) to configure FICON parameters on the Cisco MDS switch, follow these
steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# ficon vsan 2
switch(config-ficon)#
Step 3
switch(config-ficon)# no host port control
switch(config-ficon)# host port control

Allowing the Host to Control the Timestamp

By default, the clock in each VSAN is the same as the switch hardware clock. Each VSAN in a Cisco
MDS 9000 Family switch represents a virtual director. The clock and time present in each virtual director
can be different.To maintain separate clocks for each VSAN, the Cisco NX-OS software maintains the
difference of the VSAN-specific clock and the hardware-based director clock. When a host (mainframe)
sets the time, the Cisco NX-OS software updates this difference between the clocks. When a host reads
the clock, it computes the difference between the VSAN-clock and the current director hardware clock
and presents a value to the mainframe.
The VSAN-clock's current time is reported in the output of show ficon vsan vsan-id, show ficon, and
show accounting log commands.
Cisco MDS 9000 Family CLI Configuration Guide
29-20
Purpose
Enters configuration mode.
Enables FICON on VSAN 2.
Prohibits mainframe users from moving the switch to
an offline state.
Allows the host to move the switch to an offline state
(default) and shuts down the ports.
Purpose
Enters configuration mode.
Enables FICON on VSAN 2.
Prohibits mainframe users from configuring FICON
parameters on the Cisco MDS switch.
Allows mainframe users to configure FICON
parameters on the Cisco MDS switch (default).
OL-18084-01, Cisco MDS NX-OS Release 4.x
Chapter 29 Configuring FICON