Alcatel-Lucent OmniSwitch 6850 Series, Руководство по управлению

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OmniSwitch 6800/6850/9000 Switch Management Guide December 2007 page 4-1
4 Managing CMM
Directory Content
The CMM (Chassis Management Module) software runs the OmniSwitch 6800/6850/9000 switches. Each
OmniSwitch 9000 chassis can run with two CMMs to provide redundancy also full traffic throughput; one
CMM is designated as the primary CMM, and the other is designated as the secondary CMM. One CMM
or the other runs the switch, or both at the same time to provide full traffic throughput.The directory struc-
ture of the CMM software is designed to prevent corrupting or losing switch files. It also allows you to
retrieve a previous version of the switch software.
In addition to working as standalone switches, the OmniSwitch 6800 Series switches can be linked
together as a stack. For example, you could have a stack of four 6800-24 models, a stack of three 6800-48
models, or a combination of the two modules. An OmniSwitch 6800 Series stack can provide CMM
redundancy; one switch is designated as the primary CMM, and one is designated as the secondary CMM.
One CMM or the other runs the switch, but never at the same time. All other switches in a stack are desig-
nated “idle” for the purposes of CMM control. This stacking capability and CMM redundancy is also
available with the OmniSwitch 6850 Series.
Note . Mixing OmniSwitch 6800 and 6850 switches together in the same stack is not supported.
Management of the stack is run by the stack configuration software. A detailed description of the stack
configuration software and how it works is provided in the “Managing Stacks” chapter found in both the
OmniSwitch 6800 Hardware Users Guide and the OmniSwitch 6850 Hardware Users Guide.
In This Chapter
This chapter describes the basic functions of CMM software directory management and how to implement
them by using the Command Line Interface (CLI). CLI commands are used in the configuration exam-
ples; for more details about the syntax of commands, see the
OmniSwitch CLI Reference Guide .
This chapter contains the following information:
•
The interaction between the running configuration, the working directory, and the certified directory is
described in
“CMM Files” on page 4-3 .
•
A description of how to restore older versions of files and prevent switch downtime is described in
“Software Rollback Feature” on page 4-4 .
•
The CLI commands available for use and the correct way to implement them are listed in “Managing
the Directory Structure (Non-Redundant)” on page 4-13 .
•
The CLI commands and issues involved in managing the directory structure of a stack with redundant
CMM software is described in
“Managing Redundancy in a Stack and CMM” on page 4-25 .