Allied Telesis AT-S102 - Manual (Page 36)

Chapter 1: AT-CV5M02 Management Card
36
Here are two items of importance to restoring configurations to remote
AT-CM Line Cards:
ˆ There is no auto-copy for remote line cards. To restore a previous
configuration to a remote line card, you have to do it manually. The
instructions can be found in “Restoring the Last Saved Configuration”
on page 226.
ˆ You have to configure a remote line card for remote peer management
before you can remotely restore a previous configuration. For
instructions, refer to “Configuring the AT-CM2, AT-CM3, and
AT-CM70S Line Cards for the OAM-based Features” on page 90.
Active and
Standby
Management
Cards
When there are two management cards in the AT-CV5000 Chassis, the
active card automatically copies its master configuration file over the
backplane to the standby card in response to specific events. In this
manner, the active and standby cards always have the same master
configuration file. Thus, if the active card is removed from the chassis or
fails, the standby card, after completing the transition to the active state,
will operate with the same master configuration file.
Here are the events that cause an active management card to copy its
master configuration file to a standby card:
ˆ When you issue one of the save commands, the active card updates
its master configuration file in flash memory and then transmits the
changes to the standby card.
ˆ When the AT-CV5000 Chassis is powered on, the two management
cards initialize their AT-S99 Management Software programs and
afterwards share their slot numbers to ascertain which is the active
card. The card in the lowered numbered slot than transitions to the
active state and automatically transmits its master configuration file to
the standby card.
ˆ If you install a second management card in an operating chassis, the
active management card waits for the new card to initialize its
management software and enter the standby state. Afterwards, it
transmits its master configuration file to the new card.
If you install a second management card during a local management
session, you’ll be able to watch the process as status messages similar to
those in Figure 1 are displayed on your screen.