Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.1(3a) (OL-17675-05 E0, March 2009)

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Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.1(3a)
OL-17675-05
Software Download Process
Note We strongly recommend that you use the latest available software release supported by your vendor for
all Cisco MDS 9000 Family products.
Downloading Software
The Cisco MDS NX-OS software is designed for mission-critical high availability environments. To
realize the benefits of nondisruptive upgrades on the Cisco MDS 9500 Directors, we highly recommend
that you install dual supervisor modules.
To download the latest Cisco MDS NX-OS software, access the Software Center at this URL:
http://www.cisco.com/public/sw-center
See the following sections in this release note for details on how you can nondisruptively upgrade your
Cisco MDS 9000 switch. Issuing the install all command from the CLI, or using Fabric Manager to
perform the downgrade, enables the compatibility check. The check indicates if the upgrade can happen
nondisruptively or disruptively depending on the current configuration of your switch and the reason.
Compatibility check is done:
Module bootable Impact Install-type Reason
------ -------- -------------- ------------ ------
1 yes non-disruptive rolling
2 yes disruptive rolling Hitless upgrade is not supported
3 yes disruptive rolling Hitless upgrade is not supported
4 yes non-disruptive rolling
5 yes non-disruptive reset
6 yes non-disruptive reset
At a minimum, you need to disable the default device alias distribution feature using the no device-alias
distribute command in global configuration mode. The show incompatibility system
bootflash:1.3(x)_filename command determines which additional features need to be disabled.
Note Refer to the “Determining Software Compatibility” section of the Cisco MDS 9000 Family CLI
Configuration Guide for more details.
Note If you would like to request a copy of the source code under the terms of either GPL or LGPL, please
send an e-mail to [e-mail].