Administration: Time Settings
Time Range
105 Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x
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To enable SNTP authentication and define keys:
STEP 1 Click Administration > Time Settings > SNTP Authentication.
STEP  2 Select SNTP Authentication to support authentication of an SNTP session between the 
device and an SNTP server. 
STEP  3 Click Apply to update the device.
STEP  4 Click Add.
STEP  5 Enter the following parameters:
• Authentication Key ID—Enter the number used to identify this SNTP authentication 
key internally. 
• Authentication Key (Encrypted)—Enter the key used for authentication (up to eight 
characters) in encrypted format. The SNTP server must send this key for the device to 
synchronize to it.
• Authentication Key (Plaintext)—Enter the key used for authentication (up to eight 
characters) in plaintext format. The SNTP server must send this key for the device to 
synchronize to it.
• Trusted Key—Select to enable the device to receive synchronization information only 
from a SNTP server by using this authentication key. 
STEP  6 Click Apply. The SNTP Authentication parameters are written to the Running Configuration 
file.
Time Range
Time ranges can be defined and associated with the following types of commands, so that they 
are applied only during that time range: 
• ACLs 
• 8021X Port Authentication
• Port Settings
• Time-Based PoE