When used Windows as NTP server, equipment have problem to synchronization NTP time, not synchronization or continuance shock. Use other equipment as the NTP server, can synchronization time.
Step 1: confirm the NTP server version, is usually have this problem in Windows 2003 or Windows 2008, other versions windows rarely have this problem.
Step 2: open debugging ntp all in the equipment, check the response packet receive from server.
Packet from *.*.*.* (server address) to *.*.*.* (local address) on Vlanif1
Leap: 0, version: 3, mode: 4
Stratum., poll 1: 64, precision: 2 ^6
Rdel: 0.000, rdsp: 10110.870, refid LOCL.
The packet’s rdsp value is 10110.870, which is about 10000ms, can determine the problem is that the rsp value in windows response packet is too large, lead to NTP does not function normally.
Windows 2003 and windows 2008 the two versions, the default NTP rdsp value is 10s, lead to Huawei equipment thinks it’s not normal, affected NTP synchronization.
Other windows versions, the default values are all 0, Huawei equipment can process normally, but have the possibilty of modified to a non-zero value.
Step 1: In Windows server, enter regedit to into regedit, change as follow:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ services W32Time \ Config \ LocalClockDispersion this field, from 10 change it to 0
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