> # About the Default TACACS+ Server Encryption Type and Preshared Key

> You need to configure the TACACS+ preshared key to authenticate the switch to the TACACS+ server. The length of the key is restricted to 64 characters and can include any printable ASCII characters (white spaces are not allowed). You can configure a global key to be used for all TACACS+ server configurations on the switch.

> You can override this global key assignment by explicitly using the key option when configuring an individual TACACS+ server.

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