You should do certain sanity checks to ensure that the system is ready for an upgrade and to understand the impact of the upgrade:
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Enter the show incompatibility command to verify that the target image is feature-wise compatible with the current image.
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Enter the show logging level command to ensure that the severity level for all processes is set to 5 or below.
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Enter the show install all impact command to identify the upgrade impact.
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A BIOS incompatibility issue has been discovered on specific Cisco Nexus 3000 and 3100 Series switches. When you upgrade these switches from Cisco NX-OS Release 6.0(2)U6(8) or an earlier release to Cisco NX-OS Release 7.0(x), an MD5 mismatch error might occur and leave the switch at the loader prompt. We recommend that you view the field notice for this release to see if your software or hardware platforms are affected. You can find the field notice at the following URL http://www.cisco.com/c/en/us/support/docs/field-notices/642/fn64233.html
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Enter the install all command to update to the latest Cisco NX-OS software.
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Review the installer impact analysis and choose to continue.
Note
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The switch might reload at this time and cause a traffic disruption.
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The following table lists the show commands that identify the impact or potential problems that may occur when performing an upgrade.
Table 5. Upgrade show Commands
Command
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Definition
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show incompatibility system
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Displays incompatible configurations on the current system that will impact the upgrade version.
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show logging level
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Displays the facility logging severity level configuration.
Logging levels for all processes must be set at 5 or below when performing an upgrade. Processes with a logging level greater than 5 are not displayed when you enter the show install all impact command.
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show install all impact
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Displays information that describes the impact of the upgrade. This command also displays if the upgrade is disruptive or not and if the switch needs to be rebooted and the reason why.
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You can also perform the following tasks to identify potential problems before they occur:
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Ensure that you have enough space to store the images on bootflash:
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Display incompatible configurations on the current system that will impact the upgrade version.
switch# show incompatibility system pcco.s No incompatible configurations
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Verify the impact of the upgrade.
switch# show install all impact nxos bootflash:nxos.7.0.3.I2.1.bin