CMM Files
Managing CMM Directory Content
page 4-10
OmniSwitch 6800/6850/9000 Switch Management Guide
December 2007
This process occurs automatically when the switch boots. The working and certified directory relationship
described above in
“Software Rollback Feature” on page 4-4
still applies to the primary CMM switch.
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
OmniSwitch
6800
Hardware Users Guide
and the
OmniSwitch
6850
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.
Booting from the Working 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
“Copying the Working Directory to the Certified Directory” on
page 4-21
, while synchronizing the switch is described in
“Synchronizing the Primary and Secondary
CMMs” on page 4-27
.
W
C
W
C
W
C
1. Stack is booted
up from the work-
ing directory.
2. The primary
CMM switch cop-
ies its working
directory to the
secondary CMM
switch working
directory.
3. The primary
CMM switch cop-
ies its working
directory to the
other switch work-
ing directories.
Switch #1
Switch #2
Switch #3
