Cisco UCS C Series Configuration Manual page 60

Configuring IPMI over LAN
Name
Encryption Key field
Step 4 Click Save Changes.
Cisco UCS C-Series Servers Integrated Management Controller GUI Configuration Guide, Release 1.1(2)
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Description
The value of this field must match exactly the role assigned to
Note
the user attempting to log in. For example, if this field is set to
read-only and a user with the admin role attempts to log in
through IPMI, that login attempt will fail.
The IPMI encryption key to use for IPMI communications.
Configuring Communication Services
OL-22894-01