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Implementing Cisco UCS Solutions by Prasenjit Sarkar, Farhan Ahmed Nadeem

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Fabric Interconnect device failure and recovery

UCS Fabric Interconnects are deployed in a cluster configuration from the control plane perspective. A Fabric Interconnect pair is in active/standby configuration. The active Fabric Interconnect is called primary and the standby Fabric Interconnect is called subordinate.

All control plane communication is handled by the primary Fabric Interconnect that manages the main configuration database. The main configuration database is stored on the primary and replicated on the subordinate Fabric Interconnect. The primary sends updates to the subordinate when configuration changes occur through dedicated Ethernet links called L1/L2.

In a situation where the Fabric Interconnect running the primary instance ...

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