Cisco ACI uses a keyring to authenticate communication between the APIC and other devices in the fabric. The keyring consists of a shared secret, called a key, that is used to encrypt and decrypt messages. The key is generated by the APIC and is stored on the controller and on each device in the keyring.
The keyring is used to authenticate the APIC to devices in the fabric and to authenticate devices to the APIC. The keyring is also used to encrypt and decrypt messages between the APIC and devices in the fabric.
The keyring is a critical part of the Cisco ACI security model. The keyring provides the foundation for authenticating and encrypting communication between the APIC and devices in the fabric.
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