Recommended Public Sntp Time Servers; Nist Internet Time Service - Patton electronics SmartNode Series Software Configuration Manual

SmartWare Software Configuration Guide
Example: Enable the SNTP debug monitor
The following example shows how to enable the SNTP debug monitor and some typical debug information.
SN(cfg)#debug sntp client
SN(cfg)#14:44:21
14:44:21 SNTP
------------------------------------------------
Server: 172.16.1.10:123 v4
Stratum: 2
Time: 2001-10-26T12:44:21
InternetTime: 20010926@530
------------------------------------------------
14:44:21 SNTP
14:44:51 SNTP
14:45:21 SNTP
14:45:51 SNTP
14:46:21 SNTP
14:46:51 SNTP
Example: Disable the SNTP debug monitor
The following example shows how to disable the SNTP debug monitor and end any debug information.
SN(cfg)#no debug sntp client

Recommended public SNTP time servers

NIST Internet time service

The National Institute of Standards and Technology (NIST) Internet Time Service allows users to synchronize
computer clocks via the Internet. The time information provided by the service is directly traceable to UTC.
Table 16 contains information about all of the time servers operated by NIST. Please note that while NIST
makes every effort to ensure that the names of the servers are correct, NIST only controls the names of the
nist.gov severs. It is probably safest to use the IP addresses instead of the domain names.
Server Name
nist1.aol-va.truetime.com
utcnist.colorado.edu
nist1.aol-ca.truetime.com
nist1-dc.glassey.com
nist1.datum.com
nist1-ny.glassey.com
nist1-sj.glassey.com
time-a.nist.gov
time-b.nist.gov
time-a.timefreq.bldrdoc.gov
time-b.timefreq.bldrdoc.gov

Recommended public SNTP time servers

SNTP > SNTP message sent with Timestamp: 2001-10-26T14:44:21
> SNTP message received:
> Set the system time to 2001-10-26T14:44:21
> SNTP message sent with Timestamp: 2001-10-26T14:44:51
> SNTP message sent with Timestamp: 2001-10-26T14:45:21
> SNTP message sent with Timestamp: 2001-10-26T14:45:51
> SNTP message sent with Timestamp: 2001-10-26T14:46:21
> SNTP message sent with Timestamp: 2001-10-26T14:46:51
Table 16. Time servers operated by NIST
IP Address
205.188.185.33
128.138.140.44
207.200.81.113
216.200.93.8
63.149.208.50
208.184.49.9
207.126.103.204
129.6.15.28
129.6.15.29
132.163.4.101
132.163.4.102
19 • SNTP client configuration
Note Location
2 DC/Virginia
2 Colorado
2 California
2 DC/Virginia
2 California
2 New York City
2 California
1 Maryland
1 Maryland
1, 4 Colorado
1 Colorado
231