Alcatel-Lucent OmniSwitch AOS Release 6 Manual page 175

Managing CMM Directory Content
This process occurs automatically when the switch boots. The working and certified directory relationship
described above in "Software Rollback Feature" on page 5-5
Generally speaking, the switch assigned the lowest stack number is the primary CMM switch; the switch
with the next lowest stack number is the secondary CMM switch, and all other switches are idle. For more
information on stack numbering, see the "Managing Stacks" chapter found in the appropriate Hardware
Users Guide.
Scenario 2: Rebooting from the Working Directory
Since changes to the boot.cfg file and new.img files are initially saved to the working directory, some-
times it is necessary to boot from the working directory to check the validity of the new files. The follow-
ing diagram illustrates the synchronization process of a working directory reboot. The stack displayed is a
three switch stack.
Switch #1
W
1. Stack is booted
up from the work-
ing directory.
This synchronization process occurs automatically on a working directory reboot.
Note. It is important to certify the working directory and synchronize the stack as soon as the validity of
the software is established. Stacks booted from the working directory or unsynchronized stacks are at risk
of mismanaging data traffic due to incompatibilities in different versions of switch software. Certifying
the working directory is described in
page 5-21, while synchronizing the switch is described in
CMMs" on page 5-27.
OmniSwitch AOS Release 6 Switch Management Guide
Switch #2
C
W
2. The primary
CMM switch cop-
ies its working
directory to the
secondary CMM
switch working
directory.
Booting from the Working Directory
"Copying the Working Directory to the Certified Directory" on
July 2010
still applies to the primary CMM switch.
Switch #3
W
C
3. The primary
CMM switch cop-
ies its working
directory to the
other switch work-
ing directories.
"Synchronizing the Primary and Secondary
CMM Files
C
page 5-11