ISR 4431 adding leap second every day

[Richard Bradfield]

We have 2 ISR 4431 running:

Cisco IOS XE Software, Version 03.16.02.S - Extended Support Release
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S2, RELEASE SOFTWARE (fc2)

we see this message

090875: May  8 09:59:59.000 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090876: May  9 09:59:59.000 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090877: May 10 09:59:59.000 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090878: May 11 09:59:59.001 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090879: May 12 09:59:59.001 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090880: May 13 09:59:59.000 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090881: May 14 09:59:59.001 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC
090882: May 15 09:59:59.001 AEST: %IOSXE-5-PLATFORM:kernel: Clock: inserting leap second 23:59:60 UTC

I take it this is a bug, but I can't find it!

I suppose should just upgrade the IOS to latest.

[Mark Malone]

Hi Richard

We had this on our ASRs and we turned off NTP on our internet facing devices to avoid it until we upgraded the image it looks very similar coinsidering both Linux based platforms

see this it was a known issue a few months back now I think when we were looking at it effected multiple versions across ASRs and 4331s

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvc65670

[Richard Bradfield]

Thanks for your response Mark, and finding the Bug for me!

[avi]

Hi Richard,

Check with Cisco OEM that they are providing the replacement for the some platform like ISR 4431. We have did for some customer. Cisco has publish some affected platform with leap hours and providing hardware replacement. 

[Mark Malone]

I though the hardware replacements on the 4331s was for the clocking version with the intel chip failing after 18 months  if you were running v2 instead if v1 as we have to replace a lot of them globally of them due to this currently on-going , heres the link to check yours anyway but it needs to be under support since before it happened or Cisco wont replace it

http://www.cisco.com/c/en/us/support/web/clock-signal.html

Avi is there any link for the hardrware replacement for the leap issue as we just upgarded the software to get around this and id like to know its not related to hardware this issue or if it is whats the catch