Synchronization And Redundancy - Alcatel-Lucent 7210 SAS M Configuration Manual

System Basics Introduction

Synchronization and Redundancy

7210 SAS-R6 routers supporting redundancy use a 1:1 redundancy scheme. Redundancy methods
facilitate system synchronization between the active and standby Control Processor Modules
(CPMs) so they maintain identical operational parameters to prevent inconsistencies in the event
of a CPM failure.
When automatic system synchronization is enabled for an entity, any save or delete file operations
configured on the primary, secondary or tertiary choices on the active CPM file system are
mirrored in the standby CPM file system.
Although software configurations and images can be copied or downloaded from remote locations,
synchronization can only occur locally between compact flash drives (cf1:, cf2:, and cf3:).
Synchronization can occur either:
•
•
A:ALA-12>admin>redundancy# synchronize config
Syncing configuration......
Syncing configuration.....Completed.
A:ALA-12#
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Automatically — Automatic synchronization is disabled by default. To enable automatic
synchronization, the config>redundancy>synchronization command must be specified
with either the boot-env parameter or the
When the boot-env parameter is specified, the BOF, boot.ldr, config, and image files are
automatically synchronized. When the
files are automatically synchronized.
Automatic synchronization also occurs whenever the BOF is modified and when an
command is entered with no filename specified.
admin>save
Manually — To execute synchronization manually, the admin>redundancy>
synchronization command must be entered with the boot-env parameter or the config
parameter.
When the boot-env parameter is specified, the BOF, boot.ldr, config, and image files are
synchronized. When the config parameter is specified, only the config files are
synchronized.
The following shows the output displayed during a manual synchronization of
configuration files.
7210 SAS M, T, X, R6 Basic System Configuration Guide
parameter.
config
parameter is specified, only the config
config