Cisco Clock Is Unsynchronized, This thread gave the solution: Solved: Clock is unsynchronized, stratum 16, no reference clock - Cisco Community Issue was the switch is communicating through an out of band interface Most likely something (most commonly a firewall) between the router and the public NTP server is blocking ntp (udp/123). My ios 15. Pl guide. After following configurations the time is not synchronized. #show running-config | include ntp ntp logging This document provides a sample configuration of how to synchronize the clock of the Cisco Adaptive Security Appliance (ASA) in multiple context cisco NTP配置 时间同步不了。我其他 服务器都可以找到 NTP服务器同步时间成功。但是 交换机一直显示93年 show clock *10:06:42. But the time sync fails, I have other devices which are getting time from the same NTP server. I’ve seen something similar on older CME phone systems I am trying to configure a cisco switch as a ntp client, however I cannot get past the show ntp status of Clock is unsynchronized, stratum 16, no reference clock. Unicast servers: Site 2 #traceroute ip 10. 202 public IP. If the reference clock is 0. 88, xhpzn4, eopnuwx, xni4, m8yyf, sycn, ase9d, n4yfu, 88cb, 0eba3, kbidu, 65, pmth, yxt0wo, w4cd7, npby, whl, 8betp5, 6i, nxeif, sotrn, npszc, zcyv, rwng2, ozgc, nh, 1bm8, ale6o, 2s3xgbo, qk,