All, 

Thought this might be of interest to the group. It seems Cisco, at this time, 
is recommending most users turn off NTP some of their higher end (Data center 
oriented) switches (Nexus series, at least) until after the leap second then 
re-enable. 

For example: 
http://www.cisco.com/web/about/doing_business/leap-second.html (this is 
entertaining since it doesn’t actually admit there are any issues)
http://www.reddit.com/r/networking/comments/325l60/psa_do_a_cisco_leap_second_bug_scrub_before_june/

Here are links to some of the bugs:

https://tools.cisco.com/quickview/bug/CSCub38654
https://tools.cisco.com/quickview/bug/CSCua77416
https://tools.cisco.com/quickview/bug/CSCub38654

I found out about this since our network team on campus is doing just this… 
turning off NTP until after, then turning it back on. I find it pretty amazing 
that it actually causes the switch to lock up. 

I guess after things went sideways (a bit) in 2012 they didn’t think it was a 
big deal to address completely before this year. 

Anyway, just figured it might be of interest to those on this list that are 
also involved in data Networking (or just find it interesting).

-Ryan Stasel
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Reply via email to