Cisco ACE-4710-K9 Administration Guide - Page 277
Synchronizing Redundant Configurations
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Chapter 7 Configuring Redundant ACE Appliances Configuring Redundancy Synchronizing Redundant Configurations To ensure that the running configurations on both the active and the standby contexts of an FT group are identical, the ACE automatically synchronizes the running configurations between the two contexts. After the active context has accepted either a new configuration or modifications to an existing configuration, the ACE automatically applies the new configuration or configuration changes to the standby context. The ACE supports the following two types of configuration synchronizations: • Bulk config sync-Synchronizes the entire active context configuration to the standby context when the peer comes up or when autosynchronization is enabled • Dynamic config sync-Synchronizes the configuration applied to the active context to the standby context if the peer is already up To enable automatic synchronization of the running-configuration and the startup-configuration files, use the ft auto-sync command in configuration mode. If you temporarily disable ft auto-sync running-config on the active ACE (for example, to test changes to your configuration), when you subsequently reenable config sync, any changes that you made to the active ACE are duplicated on the standby ACE. Note that the standby ACE remains in the STANDBY_HOT state even when config sync is disabled on the active ACE. (For more information about FT states, see Table 7-2). If you operate the active ACE with config sync disabled for a prolonged period of time, you must manually duplicate any changes that you make to the active ACE on the standby ACE to ensure that connection replication works properly. Note If a license mismatch occurs between the two ACEs in a redundant configuration, the auto-sync command is automatically disabled and a syslog message is generated. The syntax of this command is: ft auto-sync {running-config | startup-config} OL-11157-01 Cisco 4700 Series Application Control Engine Appliance Administration Guide 7-25