NTPQuery - NTP Server Diagnostic Tool
NTPQuery is a diagnostic tool for NTP and SNTP servers.
Our support department uses it to verify connectivity from time clients to NTP
servers. NTPQuery is available free of charge to our customers to help administrators
setup and configure time management on their networks. NTPQuery simulates a
time client, displaying detailed information about the client request and the
server reply without actually modifying the local system time.
The Client Query

- Send to: Time server IP address
- NTP Port: Port # at which the server
has been contacted
- On: Date and time on client when
query was sent
- Seconds UTC: Seconds elapsed on
client since 1/1/1970
- T1 Low: Low order double-word of
time stamp
- T1 High: High order double-word
of time stamp
- GMT Offset (s): Zone difference
in seconds to GMT
The Server Reply

- Server : Time
server IP address
- Round-Trip Delay (ms) : Total time
elapsed in milliseconds between sending time request and receiving reply
- Root Delay (s): Delay to root time
source in seconds as reported by server. Stratum 1 servers likely report zero
for this parameter
- Root Dispersion (s) : Estimated variance
of time reported by server with respect to root time source
- Offset (s) : Time offset between
client and server as computer from time stamps T1,T2,T3 & T4
- T1 Low : Low order double-word of
client time stamp, when request was sent
- T1 High : High order double-word
of client time stamp, when request was sent
- T2 Low : Low order double-word of
server time stamp, when request was received
- T2 High : High
order double-word of server time stamp, when request was received
- T3 Low : Low order double-word of
server time stamp, when reply was sent
- T3 High :
High order double-word of server time stamp, when reply was sent
- T4 Low : Low order double-word of
client time stamp, when reply was received
- T4 High : High order double-word
of client time stamp, when reply was received
Other Bytefusion Time
Management Software
PresenTense
Time Client for Windows NT / 2000 / XP /2003
PresenTense Time Server for Windows
NT / 2000 / XP /2003
PresenTense NTP Auditor for
Windows NT / 2000 / XP /2003
PresenTense98 Time Client
for Windows 95 / 98 / ME
LanTime Analyzer
Copyright 1998-2004, Byte Fusion Ltd. All rights
reserved.