Determining Software Compatibility - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Software Upgrade Methods
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
Note

Determining Software Compatibility

If the running image and the image you want to install are incompatible, the software reports the
incompatibility. In some cases, you may decide to proceed with this installation. If the active and the
standby supervisor modules run different versions of the image, both images may be HA compatible in
some cases and incompatible in others.
Compatibility is established based on the image and configuration:
•
•
When upgrading from Release 2.0(1) or later to Release 3.2(3a), modules may reload and disrupt traffic
Note
after an upgrade using the install all command if an enhanced zoning lock exists. To avoid this issue,
commit or clear the zone locks and then rerun the install all command. Issue the show zone status
command to check if an enhanced zoning lock exists. Do not make enhanced zoning changes while an
upgrade is in progress.
To view the results of a dynamic compatibility check, issue the show incompatibility system
bootflash:filename command (see
the install all command returns the following message:
Warning: The startup config contains commands not supported by the standby supervisor; as
a result, some resources might become unavailable after a switchover.
Do you wish to continue? (y/ n) [y]: n
Example 8-3
switch# show incompatibility system bootflash:new-system-image
The following configurations on active are incompatible with the system image
The following configurations on active are incompatible with the system image
1) Service : cfs , Capability : CAP_FEATURE_CFS_ENABLED_DEVICE_ALIAS
Description : CFS - Distribution is enabled for DEVICE-ALIAS
Capability requirement : STRICT
Disable command : no device-alias distribute
Cisco MDS 9000 Family CLI Configuration Guide
8-6
For high availability, you need to connect the ethernet port for both active and standby
supervisors to the same network or virtual LAN. The active supervisor owns the one IP address
used by these Ethernet connections. On a switchover, the newly activated supervisor takes over
this IP address.
Image incompatibility—The running image and the image to be installed are not compatible.
Configuration incompatibility—There is a possible incompatibility if certain features in the running
image are turned off as they are not supported in the image to be installed. The image to be installed
is considered incompatible with the running image if one of the following statements is true:
An incompatible feature is enabled in the image to be installed and it is not available in the
–
running image and may cause the switch to move into an inconsistent state. In this case, the
incompatibility is strict.
– An incompatible feature is enabled in the image to be installed and it is not available in the
running image and does not cause the switch to move into an inconsistent state. In this case, the
incompatibility is loose.
Displays HA Compatibility Status
Example 8-3). Use this command to obtain further information when
Chapter 8 Software Images
OL-18084-01, Cisco MDS NX-OS Release 4.x