Perle Systems Iolan Sds4 Hl Device Server 4030370 User Manual

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Management
NTP/SNTP Mode
The NTP/SNTP mode. 
Data Options:
z
None—NTP/SNTP is turned off.
z
Unicast—Sends a request packet periodically to the Primary host. If 
communication with the Primary host fails, the request will be sent to the 
Secondary host.
z
Broadcast/Multicast—Listen for any broadcasts from an NTP/SNTP 
server and then synchronizes its internal clock to the message.
z
Manycast/Anycast—Sends a request packet as a broadcast on the LAN to 
get a response from any NTP/SNTP server. The first response that is 
received is used to synchronize its internal clock and then operates in 
Unicast
 mode with that NTP/SNTP server.
Default: None
NTP/SNTP Version Version of NTP/SNTP. 
Range: 1-4
Default: 4
Enable 
Authentication
Sets NTP/SNTP server authentication on or off.
Default: Off
Key ID
Specify the key id associated with this host.  This key must exist in the ntp/sntp 
(symmetric key) file that was downloaded to the IOLAN.
Valid key ID’s:  1-65534
(Note: the structure for the ntp/sntp (symmetric key) file can be found in your 
IOLAN User’s Guide - Appendix L)
Primary Host
The name of the primary NTP/SNTP server from the IOLAN host table. Valid 
with 
Unicast
 and 
Multicast
 modes, although in 
Multicast
 mode, the IOLAN 
will only accept broadcasts from the specified host NTP/SNTP server.
Secondary Host
The name of the secondary NTP/SNTP server from the IOLAN host table. 
Valid with 
Unicast
 and 
Multicast
 modes, although in 
Multicast
 mode, the 
IOLAN will only accept broadcasts from the specified host NTP/SNTP server.