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Synchronization and Redundancy
Synchronization and Redundancy
7710 SR routers supporting redundancy (such as the 7710 SR-c12 model) use a 1:1 redundancy
scheme. Redundancy methods facilitate system synchronization between the active and standby
Control Forwarding Modules (CFMs) so they maintain identical operational parameters to prevent
inconsistencies in the event of a CFM 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 CFM file system are
mirrored in the standby CFM 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
specified with either the
When the
parameter is specified, the BOF, boot.ldr, config, and image files are
boot-env
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
command must be entered with the
synchronization
parameter.
config
When the
parameter is specified, the BOF, boot.ldr, config, and image files are
boot-env
synchronized. When the
synchronized.
The following shows the output displayed during a manual synchronization of
configuration files.
7710 SR OS Basic System Configuration Guide
parameter or the
boot-env
config
parameter is specified, only the config files are
config
command must be
parameter.
config
parameter is specified, only the config
admin>redundancy>
parameter or the
boot-env
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