9

Time Protocols

Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

TimeP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

SNTP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Selecting a Time Synchronization Protocol or Turning Off Time

Protocol Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3 General Steps for Running a Time Protocol on the Switch: . . . . . . . . 9-3 Disabling Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

SNTP: Viewing, Selecting, and Configuring . . . . . . . . . . . . . . . . . . . . . 9-4 Menu: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5 CLI: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8 Viewing the Current SNTP Configuration . . . . . . . . . . . . . . . . . . . . 9-8 Configuring (Enabling or Disabling) the SNTP Mode . . . . . . . . . 9-10

TimeP: Viewing, Selecting, and Configuring . . . . . . . . . . . . . . . . . . . . 9-16 Menu: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . 9-17 CLI: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18 Viewing the Current TimeP Configuration . . . . . . . . . . . . . . . . . . 9-19 Configuring (Enabling or Disabling) the TimeP Mode . . . . . . . . 9-20

SNTP Unicast Time Polling with Multiple SNTP Servers . . . . . . . . 9-25Displaying All SNTP Server Addresses Configured on the Switch . . 9-25 Adding and Deleting SNTP Server Addresses . . . . . . . . . . . . . . . . . . . 9-26

Menu: Operation with Multiple SNTP Server Addresses

Configured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26

SNTP Messages in the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26

9-1