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Cisco Bug: CSCus83447 - UCS-FI: reload or switchover may occur due to Leap second update

Last Modified

May 16, 2018

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(1b)A 2.2(2c)A 2.2(3a)A

Description (partial)

There are periodic leap second events which can add or delete a second to global time. 

When the leap second update occurs the system could crash causing a network outage.

The leap second update will be propagated via Network Time Protocol (NTP). All FIs in a given cluster that has NTP enabled are affected.
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