12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 383
NTP Support
Broadcast Mode
If a broadcast address mask other than 255.255.255.255 (default) is assigned AND
a broadcast timer other that 0 (default) is set, then the unit will send NTP time
broadcasts to all devices within the subnet defined by the mask, at the designated
time interval (600 to 86400 seconds). The LI and STR fields will be set as described
in the server mode above.
If a broadcast client address other than 0.0.0.0 (default) is assigned, then the unit
will listen for NTP broadcast from that address, and set time accordingly on receipt
of the broadcast.
The ICS commands for setting up NTP are described as follows:
Command:
NTP
Use this command to provide access to the NTP in the unit. It can run as a server
application, a client application, or in a broadcast mode. The client and broadcast
modes are enabled independently by assigning an address and setting a timer.
Operation:
Level 0: N/A
Level 1:
NTP
Displays the NTP data: root delay, root dispersion, peer delay, peer
dispersion, and peer offset.
Level 2: Same as level 1 operation.
Level 3:
NTP ADDPEER {CLIENT| BROADCAST| BCLIENT} ip_dotted_address
NTP DELPEER ip_dotted_address
NTP CLRALL
NTP BTIMER {32|64|128|256|512|1024}
Options are:
ADDPEER: Add NTP peers (servers) to enable broadcast or client
mode
CLIENT: The IP address for the NTP server in client mode
BROADCAST:The subnet mask for broadcasting mode
BCLIENT: The IP for NTP server in broadcast client mode
DELPEER: Remove NTP servers from the peer table
CLRALL: Clear all the NTP peer addresses in the unit
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