S559EI-R8307P10，请问这个NTP状态是起的，为什么交换机获取的时间不对

display ntp status

 Clock status: synchronized

 Clock stratum: 2 

 System peer: 172.20.21.20 

 Local mode: client

 Reference clock ID: 172.20.21.20

 Leap indicator: 00

 Clock jitter: 0.000122 s

 Stability: 0.000 pps 

 Clock precision: 2^-23

 Root delay: 1.89209 ms 

 Root dispersion: 5.24902 ms 

 Reference time: eac1c75e.d728bfb2  Tue, Oct 22 2024  6:40:30.840

 System poll interval: 64 s

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display ntp session

      source          reference       stra reach poll  now offset  delay disper

********************************************************************************

[12345]172.20.21.20    BDS                1   255   64   48 0.1057 1.9073 4.4708

Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.

 Total sessions: 1