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REMINDER: LEAP SECOND
by Jay Ashworth 02 Jul '15

02 Jul '15

The IERS will be adding a second to time again on my birthday; 2015-06-30T23:59:59 2015-06-30T23:59:60 2015-07-01T00:00:00 Have fun, everyone. :-) Cheers, -- jra -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274

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leap second outage
by frnkblk＠iname.com 02 Jul '15

02 Jul '15

We experienced our first leap second outage -- our SHE (super head end) is using (old) Motorola encoders and we lost those video channels. They restarted all those encoders to restore service. Frank

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Re: leap second outage
by Dovid Bender 01 Jul '15

01 Jul '15

I read that and that at midnight local time since that's when you have the extra second. I know a large carrier in Israel is down. Waiting for conf. If it's leep second related. ------Original Message------ From: Stefan Sender: NANOG To: frnkblk(a)iname.com Cc: nanog(a)nanog.org Subject: Re: leap second outage Sent: Jun 30, 2015 23:30 This was supposed to have happened @midnight UTC, right? Meaning that we are past that event. Under which scenarios should people be concerned about midnight local time? Lots of confusing messages flying all over... On Jun 30, 2015 10:13 PM, <frnkblk(a)iname.com> wrote: > We experienced our first leap second outage -- our SHE (super head end) is > using (old) Motorola encoders and we lost those video channels. They > restarted all those encoders to restore service. > > Frank > > Regards, Dovid

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Re: GRE performance over the Internet - DDoS cloud mitigation
by Kenneth McRae 01 Jul '15

01 Jul '15

How stable can GRE transports and BGP sessions be when under load? I typically protect the BGP session by policing all traffic being delivered to the remote end except for BGP. Using this posture, my BGP session over GRE are stable; even under attack. Kenneth On Jun 30, 2015, at 01:37 PM, Dennis B <infinityape(a)gmail.com> wrote: Roland, Agreed, Ramy's scenario was not truly spot on, but his question still remains. Perf implications when cloud security providers time to detect/mitigate is X minutes. How stable can GRE transports and BGP sessions be when under load? In my technical opinion, this is a valid argument, which deems wide opinion. Specifically, use-cases about how to apply defense in depth logically in the DC vs Hybrid vs Pure Cloud. Good topic, already some back-chatter personal opinions from Nanog lurkers! Regards, Dennis B. On Tue, Jun 30, 2015 at 2:45 PM, Roland Dobbins <rdobbins(a)arbor.net> wrote: On 1 Jul 2015, at 1:37, Dennis B wrote: Would you like to learn more? lol I'm quite conversant with all these considerations, thanks. OP asserted that BGP sessions for diversion into any cloud DDoS mitigation service ran from the endpoint network through GRE tunnels to the cloud-based mitigation provider. I was explaining that in most cloud mitigation scenarios, GRE tunnels are used for re-injection of 'clean' traffic to the endpoint networks. ----------------------------------- Roland Dobbins <rdobbins(a)arbor.net>

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Leap Second Folo/After Action
by Jay Ashworth 01 Jul '15

01 Jul '15

Here's LWN's piece on the then-upcoming event from last week, presumably with comments trailing into today. http://lwn.net/Articles/648313/ How'd it go for everyone? Did the world end? Cheers, -- jra -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274

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Re: Leap Second Folo/After Action
by Scott Weeks 01 Jul '15

01 Jul '15

--- jra(a)baylink.com wrote: From: Jay Ashworth <jra(a)baylink.com> Here's LWN's piece on the then-upcoming event from last week, presumably with comments trailing into today. http://lwn.net/Articles/648313/ How'd it go for everyone? Did the world end? ----------------------------------------------- Not one single problem. Yay! :-) <me: gives thanks to $deity/$deities) - Ku, Kane, Lono and Kanaloa in Hawaiian> scott

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Re: leap second outage
by Johnny Eriksson 01 Jul '15

01 Jul '15

Mikael Abrahamsson <swmike(a)swm.pp.se> wrote: > This is similar to the jiffycounter wrapping, since this doesn't happen > that often, it's not commonly tested for. Good way is to start the jiffy > counter so it wraps after 10 minutes of uptime. That way you'll run into > any bugs quickly. Either we should abolish the leap second or we should > make leap second adjustments (back and forth) on a monthly basis to > exercise the code. You could do this, move back on even-numbered months and forward on odd. Any real adjustment could be done via inhibiting the monthly change... > This is a hard sell though... 'fraid so. > Mikael Abrahamsson email: swmike(a)swm.pp.se --Johnny

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NTT->HE earlier today (~10am EDT)
by Jim Popovitch 01 Jul '15

01 Jul '15

Hello, I haven't seen anything to explain this, so I'm asking a larger audience. Did anyone notice any unusual NTT or HE routing this AM? Here's what I saw: 2.|-- xe-0-1-0-17.r04.atlnga05.us.bb.gin.ntt.net 0.0% 20 0.8 0.7 0.6 0.9 0.1 3.|-- ae-2.r20.atlnga05.us.bb.gin.ntt.net 0.0% 20 4.6 6.2 0.5 13.6 4.8 4.|-- ae-4.r22.asbnva02.us.bb.gin.ntt.net 0.0% 20 15.3 15.0 13.9 15.8 0.7 5.|-- ae-4.r20.frnkge04.de.bb.gin.ntt.net 0.0% 20 127.3 106.7 98.5 127.3 11.1 6.|-- ae-2.r02.frnkge04.de.bb.gin.ntt.net 0.0% 20 126.8 126.0 125.7 126.8 0.2 7.|-- ae-1.r00.sofibu01.bg.bb.gin.ntt.net 0.0% 20 131.1 130.0 128.7 131.4 1.2 8.|-- 83.217.227.42 80.0% 20 148.5 146.0 144.2 148.5 2.0 9.|-- ip-48-93.sofia-connect.net 90.0% 20 184.5 163.8 143.1 184.5 29.3 10.|-- ??? 100.0 20 0.0 0.0 0.0 0.0 0.0 11.|-- 10ge5-4.core1.vie1.he.net 75.0% 20 160.7 150.4 143.9 160.7 6.3 12.|-- 10ge1-4.core1.prg1.he.net 80.0% 20 158.4 159.5 157.9 161.1 1.6 13.|-- 10ge10-12.core1.fra1.he.net 75.0% 20 154.5 159.2 145.9 174.4 10.7 14.|-- 100ge5-2.core1.par2.he.net 75.0% 20 187.9 172.9 157.1 187.9 11.1 15.|-- 100ge7-1.core1.nyc4.he.net 78.9% 19 147.2 146.2 144.6 147.5 1.4 16.|-- 100ge7-2.core1.chi1.he.net 78.9% 19 165.6 172.1 165.6 183.5 8.0 17.|-- 10ge15-2.core1.den1.he.net 89.5% 19 201.3 204.7 201.3 208.1 4.8 -Jim P.

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Sacramento Outage.
by Larry Sheldon 01 Jul '15

01 Jul '15

Is it odd that there is no mention of this even here? http://www.wavebroadband.com/resources/outage/service.txt -- sed quis custodiet ipsos custodes? (Juvenal)

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OK, Google. Time to dial back the AI hype.
by Mel Beckman 30 Jun '15

30 Jun '15

Google has always played fast and loose with its AI claims, but today t has gone too far. In a WSJ story, Google is misleading people into thinking it has achieved emotion, if not outright consciousness, in its AI programming: http://slashdot.org/submission/4569873/wsj-jumps-the-shark-with-ai-gets-tes… Google claims one of its computer programs using a database of movie scripts to answer questions supposedly "lashed out" at a human researcher who was repeatedly asking it to explain morality. Don't computer scientists have a responsibility to deal forthrightly with the public on the real state of research in such fields as AI? When an Internet provider like Google makes such outlandish claims, one has to wonder what the real agenda is. -mel beckman

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