Chapter 1 About this guide........................................................................... 26
Applicable products..................................................................................................................................26
Switch prompts used in this guide........................................................................................................... 26
Chapter 2 Time Protocols..............................................................................27
General steps for running a time protocol on the switch..........................................................................27
TimeP time synchronization.......................................................................................................... 27
SNTP time synchronization...........................................................................................................27
NTP time synchronization............................................................................................................. 28
timesync Command................................................................................................................... 28
Selecting a time synchronization protocol................................................................................................28
Disabling time synchronization................................................................................................................ 29
TimeP: Selecting and configuring............................................................................................................ 29
Viewing the current TimeP configuration (CLI)..............................................................................29
Configuring (enabling or disabling) the TimeP mode......................................................... 31
SNTP: Selecting and configuring............................................................................................................. 34
Viewing and configuring SNTP (CLI).............................................................................................35
Configuring (enabling or disabling) the SNTP mode.......................................................... 36
SNTP client authentication............................................................................................................42
Requirements..................................................................................................................... 42
Configuring the key-identifier, authentication mode, and key-value (CLI).......................... 42
Configuring a trusted key................................................................................................... 43
Associating a key with an SNTP server (CLI).................................................................... 44
Enabling SNTP client authentication.................................................................................. 44
Configuring unicast and broadcast mode for authentication.............................................. 45
Viewing SNTP authentication configuration information (CLI)............................................45
Saving configuration files and the include-credentials command.......................................46
SNTP unicast time polling with multiple SNTP servers............................................................................48
Displaying all SNTP server addresses configured on the switch (CLI)......................................... 48
Adding and deleting SNTP server addresses............................................................................... 49
Adding addresses...............................................................................................................49
Deleting addresses.............................................................................................................49
SNTP messages in the Event Log........................................................................................................... 49
Network Time Protocol (NTP).................................................................................................................. 49
Commands....................................................................................................................................50
timesync ntp....................................................................................................................... 50
ntp...................................................................................................................................... 50
[no] ntp............................................................................................................................... 50
ntp enable...........................................................................................................................51
ntp authentication............................................................................................................... 51
ntp authentication key-id ................................................................................................... 52
ntp max-association........................................................................................................... 53
ntp server........................................................................................................................... 53
ntp server key-id.................................................................................................................55
ntp ipv6-multicast............................................................................................................... 56
debug ntp........................................................................................................................... 56
ntp trap............................................................................................................................... 56
show ntp statistics.............................................................................................................. 58
show ntp status.................................................................................................................. 58
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