Preparing For A Non-Disruptive Upgrade On Fabric And Modular Switches - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 7 Software Images
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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This section includes the following topics:
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Preparing for a Non-Disruptive Upgrade on Fabric and Modular Switches

You can upgrade software on the following without any disruptions using the install all command for
the system software images.
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When completed, the supervisor kickstart image, supervisor system image, the linecard image and the
system bios are all updated.
Non-disruptive upgrades on these fabric switches take down the control plane for not more than 80
seconds. In some cases, when the upgrade has progressed past the point at which it cannot be stopped
gracefully, or if a failure occurs, the software upgrade may be disruptive.
During the upgrade the control plane is down, but the data plane remains up. So new devices will be
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unable to log in to the fabric via the control plane, but existing devices will not experience any disruption
of traffic via the data plane.
Before attempting to upgrade any software images on these fabric switches, follow these guidelines:
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OL-16184-01, Cisco MDS SAN-OS Release 3.x
Cisco Fabric Switch for IBM BladeCenter
Preparing for a Non-Disruptive Upgrade on Fabric and Modular Switches, page 7-21
Performing a Non-Disruptive Upgrade on a Fabric Switch, page 7-23
Viewing the Status of a Non-Disruptive Upgrade on a Fabric Switch, page 7-25
Troubleshooting a Non-Disruptive Upgrade on a Fabric Switch, page 7-25
Cisco MDS 9124 Multilayer Fabric Switch
Cisco MDS 9134 Multlayer Fabric Switch
Cisco MDS 9222i Multiservice Modular Switch
Cisco Fabric Switch for HP c-Class BladeSystem
Cisco Fabric Switch for IBM BladeCenter
During the upgrade, the fabric must be stable. None of the following configuration activities are
allowed:
– zoning changes
telnet sessions
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schedule changes
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switch cabling
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addition or removal of physical devices
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Configure the FSPF timers to the default value of 20 seconds.
If there are any CFS commits pending in the fabric, the upgrade is aborted.
If there is a zone server merge in progress, the upgrade is aborted.
If the upgrade is aborted due to a service not being ready for the upgrade, you are prompted to enter
the show install all failure-reason command to identify the reason why.
Non-Disruptive Upgrades on Fabric and Modular Switches
Cisco MDS 9000 Family CLI Configuration Guide
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