Installation guide
Table Of Contents
- Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(8c)
- Contents
- Introduction
- Components Supported
- MDS 9000 Chassis and Module Support
- Software Download Process
- Determining the Software Version
- Determining Software Version Compatibility
- Downloading Software
- Selecting the Correct Software Image for an MDS 9100 Series Switch
- Selecting the Correct Software Image for an MDS 9200 Series Switch
- Selecting the Correct Software Image for an MDS 9500 Series Switch
- NPE Software Images
- Upgrading Your Cisco MDS NX-OS Software Image
- Downgrading Your Cisco MDS SAN-OS Software Image
- New Features in Cisco MDS NX-OS Release 5.2
- New Features in Cisco MDS NX-OS Release 5.2(8c)
- Cisco MDS NX-OS Release 5.2(8c) is a maintenance release that includes bug fixes. It does not include new features.
- New Features in Cisco MDS NX-OS Release 5.2(8b)
- New Features in Cisco MDS NX-OS Release 5.2(8a)
- New Features in Cisco MDS NX-OS Release 5.2(8)
- New Features in Cisco MDS NX-OS Release 5.2(6b)
- New Features in Cisco MDS NX-OS Release 5.2(6a)
- New Features in Cisco MDS NX-OS Release 5.2(6)
- New Features in Cisco MDS NX-OS Release 5.2(2d)
- New Features in Cisco MDS NX-OS Release 5.2(2a)
- New Features in Cisco MDS NX-OS Release 5.2(2)
- New Features in Cisco MDS NX-OS Release 5.2(1)
- New Hardware in Cisco MDS NX-OS Release 5.2(1)
- Licensed Cisco NX-OS Software Packages
- Deprecated Features
- Limitations and Restrictions
- SME Quorum
- OUI Mismatch for SME Tape Targets
- FCIP Performance Drop
- FCoE Module
- IPv6
- User Roles
- Schedule Job Configurations
- Maximum Number of Zones Supported in Interop Mode 4
- InterVSAN Routing
- Java Web Start
- VRRP Availability
- Using a RSA Version 1 Key for SSH Following an Upgrade
- CFS Cannot Distribute All Call Home Information
- Availability of F Port Trunking and F Port Channels
- Reserved VSAN Range and Isolated VSAN Range Guidelines
- Applying Zone Configurations to VSAN 1
- Running Storage Applications on the MSM-18/4
- RSPAN Traffic Not Supported on CTS Ports on 8-Gbps Switching Modules
- I/O Accelerator Feature Limitations
- Support for FCIP Compression Modes
- Saving Copies of the Running Kickstart and System Images
- Configuring Buffer Credits on a Generation 2 or Generation 3 Module
- Features Not Supported on the Cisco MDS 9148 Switch
- PPRC Not Supported with FCIP Write Acceleration
- Configuring a Persistent FCID in an IVR Configuration with Brocade Switches
- Caveats
- Related Documentation
- Obtaining Documentation and Submitting a Service Request
21
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(8c)
OL-27554-07
Downgrading Your Cisco MDS SAN-OS Software Image
–
no switchport mode sd to negate the SPAN destination port mode for the SPAN destination port
–
no switchport mode st to negate the SPAN target port mode for the SPAN target port
General Downgrading Guidelines
Follow these general guidelines before you perform a a software downgrade:
• Issue the system no acl-adjacency-sharing execute command to disable ACL adjacency usage on
Generation 2 and Generation 1 modules. If this command fails, reduce the number of zones, IVR
zones, TE ports, or a combination of these in the system and issue the command again.
• Disable all features not supported by the downgrade release. Use the show incompatibility system
downgrade-image command to determine what you need to disable.
• Use the show install all impact downgrade-image command to determine if your downgrade will
be nondisruptive.
• Be aware that some features impact whether a downgrade is disruptive or nondisruptive:
–
FCoE: Fibre Channel over Ethernet requires Cisco NX-OS Release 5.2(x). A downgrade from
Release 5.2(x) disrupts and stops all FCoE traffic.
–
Fibre Channel Ports: Fibre Channel ports can be nondisruptively downgraded without
affecting traffic on the ports. See Table 15 for the nondisruptive downgrade path for all SAN-OS
releases.
–
Gigabit Ethernet Ports: Traffic on Gigabit Ethernet ports is disrupted during a downgrade.
This includes IPS modules and the Gigabit Ethernet ports on the MSM-18/4 module, and the
MDS 9222i switch. Those nodes that are members of VSANs traversing an FCIP ISL are
impacted, and a fabric reconfiguration occurs. iSCSI initiators connected to the Gigabit
Ethernet ports lose connectivity to iSCSI targets while the downgrade is in progress.
–
FICON: If you have FICON enabled, the downgrade path is different. See the “FICON
Downgrade Paths” section on page 24.