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CMM Files Managing CMM Directory Content

page 5-10 OmniSwitch 6250/6450 Switch Management Guide May 2012

This process occurs automatically when the switch boots. The working and certified directory relationship

described in the preceding figure in “Software Rollback Feature” on page 5-4 continues to apply 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 “Managing Stacks” chapter found in the related OmniSwitch

6250/6450 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,

sometimes it is necessary to boot from the working directory to check the validity of the new files. The

following 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 5-21, while synchronizing the switch is described in “Synchronizing the Primary and Secondary

CMMs” on page 5-27.

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

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Alcatel OmniSwitch/Router Guía de usuario Pagina 138