Understanding Supervisor Engine Redundancy Synchronization; Rpr Supervisor Engine Configuration Synchronization - Cisco 4500M Software Manual

Understanding Supervisor Engine Redundancy Synchronization

SSO is compatible with the following list of features. However, the protocol database for these features
is not synchronized between the redundant and active supervisor engines:
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The following features are learned on the redundant supervisor engine if the SSO feature is enabled:
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Understanding Supervisor Engine Redundancy Synchronization
During normal operation, the persistent configuration (RPR and SSO) and the running configuration
(SSO only) are synchronized by default between the two supervisor engines. In a switchover, the new
active supervisor engine uses the current configuration.
Note
These sections describe supervisor engine redundancy synchronization:
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RPR Supervisor Engine Configuration Synchronization

Because the redundant supervisor engine is only partially initialized in RPR mode, it interacts with the
active supervisor engine only to receive configuration changes at startup and upon saving the
configuration changes.
When a redundant supervisor engine is running in RPR mode, the following events trigger
synchronization of the configuration information:
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Software Configuration Guide—Release 12.2(25)EW
6-6
802.1Q tunneling with Layer 2 Protocol Tunneling (L2PT)
Baby giants
Jumbo frame support
CDP
Flood blocking
UDLD
SPAN/RSPAN
NetFlow
All Layer 3 protocols on Catalyst 4500 series switches (Switch Virtual Interfaces)
You cannot enter CLI commands on the redundant supervisor engine console.
RPR Supervisor Engine Configuration Synchronization, page 6-6
SSO Supervisor Engine Configuration Synchronization, page 6-7
When the redundant supervisor engine boots, the auto-sync command synchronizes the persistent
configuration. This command is enabled by default. For details, refer to
Supervisor Engine Configurations" section on page
When the active supervisor engine detects the redundant supervisor engine, the configuration
information is synchronized from the active supervisor engine to the redundant supervisor engine.
This synchronization overwrites any existing startup configuration file on the redundant supervisor
engine.
When you make changes to the configuration, you must use the write command to save and
synchronize the startup configuration of the redundant supervisor engine.
Chapter 6 Configuring Supervisor Engine Redundancy Using RPR and SSO
6-10.
"Synchronizing the
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