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Intel
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NetStructure
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ZT 7102 Chassis Management Module
Updating Software
132 Technical Product Specification
25.8 Synchronization
Following a firmware update to the standby CMM in a redundant CMM, some level of
synchronization will occur. The firmware contains an internal synchronization version which is
used to determine what level of synchronization occurs following an update. The internal
synchronization number will increment each time a firmware package is released.
Following a firmware update, the CMM with the newest synchronization version will become or
remain the active CMM. If the synchronization version is the same after an update, a full
synchronization occurs.
Note: User scripts are only synchronized if the synch code versions remain the same.
The following table describes the behavior following an update to a different synch code version.
Board power states are synchronized in all cases (synch versions equal or not equal).
The synchronization process does not synchronize the alarms (SEL) when the synch versions are
not equal. SEL files are saved by the update process. During an update to an earlier version of a
redundant setup, alarms received while the Standby is being updated won't be synchronized.
25.8.1 Updating to a Newer Synchronization Version
Following an update on the standby CMM to firmware that has a newer synchronization version
than the active CMM, the active CMM will synchronize critical information, such as board power
states, the SEL, SNMP trap addresses and configuration, and password files. Once synchronization
completes, the newly updated CMM will then become the active CMM because it has a newer
synchronization version.
25.8.2 Updating to an Older Synchronization Version
Following an update on the standby CMM to firmware that has an older synchronization version
than the active CMM, no synchronization will occur and the newly updated CMM will remain as
standby because it has an older synchronization version.
Table 54. Synchronization Behavior for Differing Synch Versions
Local Synch Version > Other
Synch Version
Local Synch Version < Other Synch
Version
Local CMM is Active
Synch to Standby: Board Power
States
Synch to Standby: Board Power States, SEL,
SNMP trap addresses, Password
Note: /home/scripts is NOT synchronized.
Local CMM is Standby
Synch from Active: Board Power
States, SEL, SNMP trap
addresses, Password
Note: /home/scripts is NOT
synchronized.
Synch from Active: Board Power States.