問題描述
現場配置了NTP服務，並且綁定了vpn實例，目前時鍾無法同步，其他設備S6520相同的配置能同步成功
===============display clock===============
07:01:00.298 Asia/Shanghai Fri 10/13/2023
Time Zone : Asia/Shanghai add 08:00:00
過程分析
檢查配置沒發現什麼問題
#
clock timezone Asia/Shanghai add 08:00:00
clock protocol ntp mdc 1
#
ntp-service enable
ntp-service peer acl 2100
ntp-service unicast-server 100.200.X.X vpn-instance management priority source M-GigabitEthernet1/0/0/0
ntp-service unicast-server 100.200.X.X vpn-instance management source M-GigabitEthernet1/0/0/0
#
acl number 2100
description ntp-server
rule 5 permit vpn-instance management source 100.200.X.X 0
rule 10 permit vpn-instance management source 100.200.X.X 0
ntp狀態是同步的：
以下為10.13上午9：30時收集的debug信息：暫時未發現異常
<GX4-HLW-SW-Core>*Oct 13 01:27:11:072 2023 GX4-HLW-SW-Core NTP/7/PACKET_SEND: -MDC=1;
packet to 100.200.104.41, length: 48
leap: 0, version: 4, mode: 3, vrfindex: 1
stratum: 4, poll: 6, precision: 2^-23
rdel: 65.216, rdsp: 24.155, refid: 100.200.X.X
reftime: e8d31b2d.12a625e4 Fri, Oct 13 2023 1:26:05.072
orgtime: e8d31b2d.11faa179 Fri, Oct 13 2023 1:26:05.070
rectime: e8d31b2d.12a625e4 Fri, Oct 13 2023 1:26:05.072
xmttime: e8d31b6f.126b7b80 Fri, Oct 13 2023 1:27:11.071
*Oct 13 01:27:11:072 2023 GX4-HLW-SW-Core NTP/7/PACKET_RECV: -MDC=1;
packet from 100.200.104.41 to 100.200.100.1 on M-GigabitEthernet1/0/0/0
leap: 0, version: 4, mode: 4, vrfindex: 1
stratum: 3, poll: 6, precision: 2^-24
rdel: 64.911, rdsp: 19.241, refid: 203.107.X.X
reftime: e8d318a9.30fa5f50 Fri, Oct 13 2023 1:15:21.191
orgtime: e8d31b6f.126b7b80 Fri, Oct 13 2023 1:27:11.071
rectime: e8d31b6f.11ed8ce7 Fri, Oct 13 2023 1:27:11.070
xmttime: e8d31b6f.11f9619a Fri, Oct 13 2023 1:27:11.070
inptime: e8d31b6f.12903528 Fri, Oct 13 2023 1:27:11.072
*Oct 13 01:27:11:072 2023 GX4-HLW-SW-Core NTP/7/ACL: -MDC=1; Access restrict: 0x00000008.
*Oct 13 01:27:11:072 2023 GX4-HLW-SW-Core NTP/7/AUTH: -MDC=1; Received a packet at 31158739, from 100.200.104.41, mode 4, ky ID 00000000, length 48, authentication result 0
*Oct 13 01:27:11:072 2023 GX4-HLW-SW-Core NTP/7/PARAM: -MDC=1; Clock filter param: number 8, offset -0.001371, delay 0.00032, dispersion 0.003379, jitter 0.000818, burst 0
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint -1, -0.063945
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint -1, -0.057422
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint 0, -0.001549
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint 0, -0.001371
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint 1, 0.054679
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; endpoint 1, 0.060848
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; peer 100.200.X.X, offset -0.001371, low -0.057422, high .054679, flags 00000421
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; peer 100.200.X.X, offset -0.001549, low -0.057422, high .054679, flags 00000401
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; Survivor 100.200.X.X, distance 3.007603
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; Survivor 100.200.X.X, distance 4.008430
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; Combine offset -0.001371479, jitter 0.000818399
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SYNCH: -MDC=1; Synchronized to peer 100.200.X.X
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/SELECT: -MDC=1; Clock update at 31158739, sample 31158544, session ID 40934 offset -0.001371
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/ADJUST: -MDC=1; Reset clock state, time count difference 10, state 5->5, pol 6, count -6, offset -0.001
*Oct 13 01:27:11:073 2023 GX4-HLW-SW-Core NTP/7/ADJUST: -MDC=1; Adjust local clock: offset -0.001371479 jitter 0.000470736 req -29.779 stab 0.006 poll 6
解決方法
發現時區名稱不符合規範
將Shanghai修改為shanghai即可