Managing CMM Directory Content

CMM Files

 

 

 

 

Software Rollback Configuration Scenarios for a Single Switch

The examples below illustrate a few likely scenarios and explain how the running configuration, working directory, and certified directory interoperate to facilitate the software rollback on a single switch.

Note. This information applies to a switch stack, however the manner in which CMM software is propa- gated to all switches in a stack is explained in “Redundancy Scenarios” on page 4-9.

In the examples below, R represents the running configuration, W represents the working directory, and C represents the certified directory.

Note. For the following scenarios, it is important to remember the difference between where the switch boots from, and where the switch is running from. See “Where is the Switch Running From?” on page 4-4for more information.

Scenario 1: Running Configuration Lost After Reboot

Switch X is new from the factory. It is plugged in and booted up from the certified directory, the contents of which are loaded into the running configuration. Since the working and certified directories are exactly the same, the switch is running from the working directory. Through the course of several days, changes are made to the configuration file in the running configuration.

Power to the switch is interrupted, the switch reboots from certified directory, all of the changes in the running configuration are overwritten, and the switch rolls back to the certified directory (which in this case is the factory setting).

This is illustrated in the diagram below:

R W C

1.Switch boots from certified directory using factory configura- tion settings. Since the working and certified directories are the same, it will be running from the working direc- tory.

R W C

2.Changes are made to the run- ning configura- tion and stored in the running con- figuration.

R W C

3.Power is inter- rupted and the switch goes down.

R W C

4.Switch reboots from certified directory using factory configura- tion settings; run- ning configuration changes are lost. Since the working and certified direc- tories are the same, it will be running from the working directory.

Running Configuration is Overwritten by the Certified Directory on Boot

OmniSwitch 6600 Family Switch Management Guide March 2005

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Alcatel Carrier Internetworking Solutions omniswitch manual Scenario 1 Running Configuration Lost After Reboot
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omniswitch specifications

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