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
New Features in Cisco MDS NX-OS Release 4.1(3a)
Downgrading the SSI Image on Your SSM
Use the following guidelines when downgrading your SSI image on your SSM:
• On a system with at least one SSM installed, the install all command might fail on an SSM when
you downgrade from Cisco NX-OS Release 4.1(x) to any SAN-OS 2.x release earlier than SAN-OS
Release 2.1(2e). Power down the SSM and perform the downgrade. Bring up the SSM with the new
bootvar set to the 2.x SSI image.
• Downgrade the SSI boot images on the SSMs on the switch to a release version supported by your
Cisco SAN-OS release. Refer to the Cisco MDS SAN-OS Release Compatibility Matrix for Storage
Service Interface Images.
• SSM intelligent services traffic switching on SSM ports is disrupted on upgrades or downgrades.
• Fibre Channel switching traffic on SSM ports is not disrupted under the following conditions:
– All SSM applications are disabled. Use the show ssm provisioning command to determine if
any applications are provisioned on the SSM. Use the no ssm enable feature configuration
mode command to disable these features.
– The EPLD version on the SSM is at 0x07 or higher. Use the show version module slot epld
command to determine your EPLD version. Refer to the Cisco MDS 9000 Family Release Notes
for Cisco MDS 9000 EPLD Images to upgrade your EPLD image.
– Refer to the Cisco Data Center Interoperability Support Matrix and the “Managing Modules”
chapter in the Cisco MDS 9000 Family CLI Configuration Guide, Release 3.x, for information
on downgrading your SSM.
New Features in Cisco MDS NX-OS Release 4.1(3a)
This section briefly describes the new features introduced in this release. For detailed information about
the features listed, refer to the Cisco MDS 9000 Family CLI Configuration Guide, the Cisco MDS 9000
Family Fabric Manager Configuration Guide, and the Cisco MDS 9000 Family Storage Media
Encryption Configuration Guide. For information about new commands associated with these features,
refer to the Cisco MDS 9000 Family Command Reference. The “New and Changed Information” section
in each of these books provides a detailed list of all new features and includes links to the feature
description or new command.
Note These release notes are specific to this release. For the complete NX-OS and SAN-OS documentation
set, see the “Related Documentation” section.
Cisco MDS 9000 NX-OS Release 4.1(3a) New Features
Cisco MDS 9000 NX-OS Release 4.1(3a) is a software release that includes new features, enhancements,
and bug fixes. The most significant new features include the following: