S6700 as NTP server can’t synchronize to third party devices（eg: juniper）, but using s12708, it can synchronize with same NTP configuration.
Collect ‘debugging ntp-service packet’ find the reason for failing to synchronize is version or mode.
May 8 2015 17:11:13.610.1+08:00 TC-02-CORSWC01 NTP/7/NTP_DBG_Pkt4_Recv:
FileId [ 025 ], LineNo [ 04074 ]- Packet from 192.168.1.242 dropped. (Reason: Invalid version or mode)
After confirming with customer, third party devices use NTP version 4, while all the software versions of S6700(before V2R7) at present only support NTP V3.
all the software versions of S6700 (before V2R7) at present don’t support NTP V4.
Change the version of NTP client to V3.
All the software versions (before V2R7) of S6700 at present only support NTP V3，while S12700 could support NTP V4.