Configuration Guide User guide

322 FastIron Configuration Guide
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Image mismatches
Auto Image Copy limitations
The following limitations apply to the Auto Image Copy feature:
• This feature is applicable to those stack units that are in a non-operational image mismatch
state only.
• Auto Image Copy does not work if the image version of the IPC is different from the stack unit
version in the case of a major image mismatch.
• If a stack unit with a newer image is merged with a stack running an older version of the
software, the newly formed stack will still be running the older version of the software.
• Auto Image Copy does not work if the user has copied a different image into the flash, creating
a mismatch in versions between the flash and the running image on the active unit of the
stack.
Disabling Auto Image Copy
Auto Image Copy is enabled by default. However, if you wish to disable this feature, enter the
following command in global configuration mode.
Brocade(config)# image-auto-copy disable
Syntax: no image-auto-copy disable
Run the no image-auto-copy disable command to enable Auto Image Copy. This restarts the Auto
Image Copy immediately and ensures that all stack units have the same image.
NOTE
You can run the show running-config or the show stack detail command to see if Auto Image Copy is
disabled.
Verifying Auto Image Copy
Use the show stack detail command to verify if there are any units in the mismatch state after the
stack is formed. Refer to “Displaying stack information” on page 293 for more information about
the command.
Memory allocation failure
A memory allocation (malloc) failure occurs when the Active Controller does not have enough
memory to run a stack unit. This failure may occur if you configure large numbers (for example, 4 K
of VLANs, or STP instances (for example, 255).in the router image. This message means that the
Active Controller is low on memory after allocating these resources and does not have enough
remaining memory to control a stack member. You can correct this by reducing the number of
VLANs or STP instances.
NOTE
After you make configuration changes such as number of VLANs or STP instances, you must reset
the stack.