Allied Telesis AT-S102 - Manual (Page 33)

Converteon Management Software User’s Guide
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constantly polling the line cards over the backplane in the chassis for their
current parameter settings. However, this file is temporary. It is discarded
whenever the chassis is powered off or the management card is reset or
removed from the chassis.
The second master configuration file on the AT-CV5M02 Management
Card is stored in flash memory and retained even when the chassis is
powered off. However, this master configuration file is not updated
automatically. Instead, you have to instruct the management card to do it
by issuing one of the save commands. When you enter a save command,
the management card copies the master configuration file in DRAM to
flash memory for permanent storage. For information on the save
commands, refer to “Saving Your Configuration Changes” on page 78.
Here are the steps that the management card and the line cards perform
when one of their parameter settings is changed.
1. When you enter a new setting on a line card, the management card
sends the change to the designated card over the backplane of the
chassis.
2. The line card implements the change and updates its configuration file
in flash memory so that it retains the change even if you remove the
line card or power off the chassis.
3. The management card automatically updates its master configuration
file in DRAM the next time it polls the line card, which it does every few
seconds.
4. The next time you issue a save command the management card
copies the master configuration file from DRAM to flash memory.
Note
Unless stated otherwise, all future references to the master
configuration file in this guide refer to the permanent file in flash
memory on the management card.
Restoring
Configurations to
the AT-CM Line
Cards
As just explained, the parameter settings of the AT-CM Line Cards are
stored in two locations— the configuration files on the line cards
themselves and the master configuration file on the management card.
The purpose of this redundancy is to make it easier for you to replace the
line cards. In the event you need to replace a line card, you can assign the
new card the same configuration as its predecessor by restoring to the
new card the previous configuration from the master configuration file on
the management card. This relieves you from having to manually
configure new line cards.
With the AT-CM3 Line Cards you can restore previous configurations
either automatically or manually. The former is referred to as auto-copy.