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Cisco Bug: CSCte91471 - NTP v4 takes several hours to sync when multiple servers are configured

Last Modified

Feb 16, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

15.0(1)M 15.1(1)T4.6

Description (partial)

Symptoms: Clock synchronization with the NTP server could be lost for several
hours if router (NTP client) runs NTPv4.

Conditions: The symptom is observed if the router clock is reset (for example:
by using the <CmdBold>clock set<noCmdBold> exec command). The router then takes
a long time to synchronize again.
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