Configuration Guide User guide

FastIron Configuration Guide 319
53-1002494-02
Image mismatches
NOTE
The Active Controller can still download an image to the non-operational unit.
The Active Controller generates a log message whenever it puts a stack unit into a non-operational
state. The following examples describe the types of mismatches and the related log message:
• Advanced feature mismatch - The Active Controller is enabled for advanced features (such as
BGP) and the stack unit is not enabled.
Stack: Unit 2 00e0.1020.0100 doesn’t have the matching advanced feature
privileges
• Image mismatch - A stack unit is running a different software image than that of the Active
Controller.
Stack: Unit 2 00c0.1020.0100 image mismatch
• Configuration mismatch - The module configuration for a stack unit does not match the
reserved configuration on the Active Controller.
Stack: Unit 2 00e0.1020.0100 config mismatch
• Memory allocation mismatch - The Active Controller does not have enough memory to
accommodate the stack unit.
Stack: Malloc failure for unit 2.00e0.1020.0100
These mismatches are described in the following sections.
Image mismatches
Advanced feature privileges (FCX devices only)
Advanced feature privileges must be enabled to run advanced features such as BGP. Both Active
and Standby units must be enabled for advanced features for these features to operate across the
stack. A unit that is not enabled for these features is put into a non-operational state.
If the Active Controller is not enabled for advanced features, these features will not operate on the
stack.
IronStack technology requires that all stack units run the same version of the software image. In
cases where the software version differs, there are two levels of mismatch, major and minor.
Major mismatch for stack units
A major mismatch indicates an Interprocessor Communications (IPC)-related data structure
change, or an election algorithm change, or that a version of the software that does not support
stacking is installed on a unit. This can happen when the software undergoes a major change
(such as a change from 05.0.00 to 05.1.00). When a major mismatch occurs, the system logs and
prints a message similar to the following.
Warning! Recv 424 IPC in 1m from 0012.f21b.a900 e1/1/25: wrong version 5 !=6.
Please make sure all units run the same image.