For our third generation units such as Sonoma, Meridian II, Tycho II, Ninja, RTM3205 and e-Series Distribution, run the command:
/etc/rc.d/rc.ntpd restart
For older models, the only way to restart the daemon is to reboot.
EndRun NTP Servers are compliant with STIG ID: NET0813, Rule ID: SV-15326r5, Vuln ID: V-14671. The time servers support a FIPS-approved message authentication code and NIST-approved HMAC algorithms.
Yes. NTS4NTP is in the draft standard level and when released we expect it will be integrated into the NTP distribution. The Time Servers are periodically upgraded with the latest distribution so when NTS4NTP is supported, then it will also be supported in our products. The standards process is lengthy so there is no telling when this capability will be in the NTP distribution.
For a detailed answer to this question click here.
Yes. For current models (Sonoma, Meridian II, Tycho II, RTM3205) use Linux command:
ntpq -c sysinfo
For legacy models use Linux command:
ntpdc -c sysinfo
There are many public time servers available over the Internet. Access to these public time servers is free of charge. While public time servers are certainly less costly - accurate, reliable and secure time is best provided by a dedicated time server that resides under your control inside your network security perimeter. Using public time servers available over the Internet is not recommended for the following reasons:
When two or more computers are involved, accurate time keeping is difficult, especially if they are not in the same physical location. A dedicated time server inside your network perimeter is the most accurate, reliable and secure way to ensure accurate timekeeping for all computers on your network. Accurate timekeeping is necessary to support eBusiness and other applications such as Stock Trades, Logs, B2B Transactions, File Operations, Packet Time Stamps, Software Configuration Management, Database Accuracy, Telecommunication Call Billing, etc. For a more detailed respon
Exclusive EndRun oscillator-control algorithms provide extended Stratum 1 holdover performance when the unit is not locked to the synchronization signal (GPS or CDMA). Typical NTP Stratum 1 holdover periods are:
24 hours - TCXO (standard)
35 days - OCXO (upgrade)
140 days - Rubidium (upgrade)
Client software is widely available as freeware and shareware. Setting up an NTP or SNTP client is relatively simple once you have installed the software on your workstation and communicated with the time server over the network. For a list of NTP client software click here.
Over WANs (Wide Area Networks), up to 100 milliseconds is typical. It depends on how far away the public time server is, or more specifically, how many hops between you and the server. Within a LAN (Local Area Network) using a dedicated NTP Time Server, 0.5 to 2 milliseconds is typical. The internal accuracy of the CDMA Network Time Server is on the order of 10 microseconds. It can easily keep all clients on a LAN synchronized to typically within 0.5 to 2 milliseconds.
