nanog mailing list archives
TWC (AS11351) blocking all NTP?
From: Jonathan Towne <jtowne () slic com>
Date: Sat, 1 Feb 2014 23:03:19 -0500
This evening all of my servers lost NTP sync, stating that our on-site NTP servers hadn't synced in too long. Reference time noted by the local NTP servers: Fri, Jan 31 2014 19:11:29.725 Apparently since then, NTP has been unable to traverse the circuit. Our other provider is shuffling NTP packets just fine, and after finding an NTP peer that return routed in that direction, I was able to get NTP back in shape. Spot checking various NTP peers configured on my end with various looking glasses close to the far-end confirm that anytime the return route is through AS11351, we never get the responses. Outbound routes almost always take the shorter route through our other provider. Is anyone else seeing this, or am I lucky enough to have it localized to my region (Northern NY)? I've created a ticket with the provider, although with it being the weekend, I have doubts it'll be a quick resolution. I'm sure its a strange knee-jerk response to the monlist garbage. Still, stopping time without warning is Uncool, Man. -- Jonathan Towne
Current thread:
- TWC (AS11351) blocking all NTP? Jonathan Towne (Feb 01)
- Re: TWC (AS11351) blocking all NTP? Paul Ferguson (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Jonathan Towne (Feb 02)
- Re: TWC (AS11351) blocking all NTP? John Levine (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Michael DeMan (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Dobbins, Roland (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Dobbins, Roland (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Michael DeMan (Feb 02)
- Re: TWC (AS11351) blocking all NTP? Dobbins, Roland (Feb 02)
- Re: TWC (AS11351) blocking all NTP? John Kristoff (Feb 03)
- Re: TWC (AS11351) blocking all NTP? Dobbins, Roland (Feb 03)
- Re: TWC (AS11351) blocking all NTP? John Levine (Feb 02)