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
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Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(1)
OL-25090-01
Downgrading Your Cisco MDS SAN-OS Software Image
Use
Table 12
to determine the nondisruptive upgrade path for FICON-certified releases. Find the image
release number you are currently using in the Current Release with FICON Enabled column of the table
and follow the recommended path.
Downgrading Your Cisco MDS SAN-OS Software Image
This section lists the guidelines recommended for downgrading your Cisco MDS SAN-OS software
image and includes the following topics:
•
Downgrading Guidelines Specific to NX-OS Release 5.2(1), page 18
•
General Downgrading Guidelines, page 19
Downgrading Guidelines Specific to NX-OS Release 5.2(1)
The following guideline applies to a downgrade from Cisco MDS NX-OS Release 5.2(1):
•
You cannot nondisruptively downgrade from NX-OS Release 5.2(1) to NX-OS Release 5.0(x) if you
installed NX-OS Release 5.2(1) on an MDS 9509 or MDS 9506 switch and you installed a
Generation 4 module in the switch and performed a full switch reload. The reason for this restriction
is the change in fabric mode that occurs following the switch reload with the Generation 4 hardware
installed. The downgrade will be disruptive, even if you remove the Generation 4 module prior to
starting the downgrade.
If you do not install Generation 4 hardware or perform a full switch reload following the installation
of NX-OS Release 5.2(1) on an MDS 9509 or MDS 9506 switch, then you can nondisruptively
downgrade to NX-OS Release 5.0(x).
•
We recommend that you delete any SPAN configuration, Fibre Channel tunnel, or tunnel-ID map
configuration from your switch before you downgrade from NX-OS Release 5.2(1) to a lower
version. If any SPAN session, SPAN destination, SPAN target, or Fibre Channel tunnel interface is
configured, the installer should detect it and prompt you to delete these configurations.
To gather information about SPAN sessions and delete them, use the following commands in this
order:
–
show incompatibility systems bootflash:
image_name
to display any incompatible
configurations
–
show span session
to check the current configuration for a SPAN session
–
no span session
session-number
to delete a SPAN session
Table 12
FICON Nondisruptive Upgrade Path
Current Release with FICON
Enabled
Upgrade Path
NX-OS Release 4.2(1b)
You can nondisruptively upgrade directly to NX-OS Release 4.2(7b).
NX-OS Release 4.1(1c)
You can nondisruptively upgrade directly to NX-OS Release 4.2(1b).
SAN-OS Release 3.3(1c)
You can nondisruptively upgrade directly to NX-OS Release 4.2(1b).
SAN-OS Release 3.2(2c),
3.0(3b), 3.0(3), and 3.0(2).
First upgrade to SAN-OS Release 3.3(1c), and then upgrade to NX-OS
Release 4.2(1b).
