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strange routing anomalies
by Ken Chase 29 Jun '17

29 Jun '17

https://stat.ripe.net/widget/routing-history#w.resource=as15562&w.starttime… :D Nice job, Job. /kc -- Ken Chase - math(a)sizone.org Guelph Canada

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Internetpulse.net is dead
by Sean Hunter 29 Jun '17

29 Jun '17

Anyone know of a site with similar functionality? internetpulse.net redirects to Dynatrace homepage now.

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Re: Russian diplomats lingering near fiber optic cables
by Tim Pozar 29 Jun '17

29 Jun '17

I pretended to be a Russian diplomat today. Tim On 6/3/17 12:13 PM, Matthew Petach wrote: > On Fri, Jun 2, 2017 at 11:40 AM, <valdis.kletnieks(a)vt.edu> wrote: > [...] >> >> Well, I'd be willing to buy that logic, except the specific buildings called >> out look pretty damned big for just drying off a cable. For example, this >> is claimed to be the US landing point for TAT-14 - looks around 4K square feet? > > I think you might be off by an order of magnitude or two > on that. 4,000 sq ft is about the size of the guest bathroom > in Snowhorn's new house, isn't it? > > (well, OK, maybe a slight exaggeration... ;) > > Matt

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someone at chef.io ?
by Jim Mercer 27 Jun '17

27 Jun '17

hi, can someone from chef.io reach out to me? seems we got blocked for downloads somehow. --jim -- Jim Mercer Reptilian Research jim(a)reptiles.org +1 416 410-5633 Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!" -- Hunter S. Thompson

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Re: Long AS Path
by Jakob Heitz (jheitz) 27 Jun '17

27 Jun '17

The reason that a private ASN in the public routing table is an error is that the AS Path is used to prevent loops. You may have private AS 65000 in your organization and I may have another private AS 65000 in my organization. If my ASN 65000 is in the AS path of a route sent to you, then your AS 65000 will drop it, thinking it were looping back. BTW, this is different from a confederation member AS. Thanks, Jakob. > Date: Mon, 26 Jun 2017 16:27:39 +0000 > From: Mel Beckman <mel(a)beckman.org> > To: Michael Hare <michael.hare(a)wisc.edu> > Cc: Hunter Fuller <hf0002+nanog(a)uah.edu>, James Bensley > <jwbensley(a)gmail.com>, "nanog(a)nanog.org" <nanog(a)nanog.org> > Subject: Re: Long AS Path > Message-ID: <5CC4BA8E-8FBF-4AD4-835D-2C06265CE502(a)beckman.org> > Content-Type: text/plain; charset="us-ascii" > > Michael, > > Filtering private ASNs is actually part of the standard. It's intrinsic in the term "private ASN". A private ASN in the public routing table is a clear error, so filtering them is reasonable. Long AS paths are not a clear error.' > > I'm surprised nobody here who complains about long paths is has followed my suggestion: call the ASN operator and ask them why they do it, and report the results here. > > Until somebody does that, I don't see long path filtering as morally defensible :) > > -mel beckman > >> On Jun 26, 2017, at 8:09 AM, Michael Hare <michael.hare(a)wisc.edu> wrote: >> >> Couldn't one make the same argument with respect to filtering private ASNs from the global table? Unlike filtering of RFC1918 and the like a private ASN in the path isn't likely to leak RFC1918 like traffic, yet I believe several major ISPs have done just that. This topic was discussed ~1 year ago on NANOG. >> >> I do filter private ASNs but have not yet filtered long AS paths. Before I did it I had to contact a major CDN because I would have dropped their route, in the end costing me money (choosing transit vs peering).

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SAFNOG-3: Call for Papers Now Out!
by Mark Tinka 26 Jun '17

26 Jun '17

Hello all. It gives me great pleasure to announce that the SAFNOG-3 Call for Papers is now out. You may review the CfP and all relevant submission details at the link below: http://safnog.org/papers.html We are working hard to put together an exciting, educational, informative and memorable agenda for this year's meeting. We look forward to receiving your submissions, and seeing you in Durban for our next meeting. Cheers, Mark Tinka On Behalf of the SAFNOG Management Committee

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Netflix fast.com performance
by Amos Rosenboim 25 Jun '17

25 Jun '17

Hello, Lately we have been troubleshooting complaints from customers of several ISPs about relatively low results when testing to Netflix's fast.com When we started troubleshooting we notice the following: 1. When the latency to the fast.com test server is ~70ms results are significantly lower than speedtest.net results or Google fiber results. 2. When latency to the fast.com server is low (10-20ms, over DSL link) the results are similar between speedtest.net and fast.com When looking at packet captures of the fast.com test we notice the following: 1. fast.com pushes traffic very aggressively: we have applied a shaper with CIR=100Mbps and 200ms and even 500ms queue limit (cisco jargon) and still noticed drops when performing fast.com tests. 2. Packets originated from fast.com do not have the tcp push (psh) flag on. 3. It seems that fast.com recovery from packet loss is not very good over high latency (~70ms). It seems to us that after a packet loss even the server reaches his cwnd and stops transmitting for relatively long periods. We are interested to know if anybody else experience similar behaviour (with similar latency) or have any other insights into this. If you would like to take a look at captures performed over 70ms latency please PM and I'll share the files. Regards Amos

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Long AS Path
by James Braunegg 25 Jun '17

25 Jun '17

Dear All Just wondering if anyone else saw this yesterday afternoon ? Jun 20 16:57:29:E:BGP: From Peer 38.X.X.X received Long AS_PATH= AS_SEQ(2) 174 12956 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 ... attribute length (567) More than configured MAXAS-LIMIT Jun 20 16:15:26:E:BGP: From Peer 78.X.X.X received Long AS_PATH= AS_SEQ(2) 5580 3257 12956 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 23456 ... attribute length (568) More than configured MAXAS-LIMIT Someone is having fun, creating weird and wonderful long AS paths based around AS 23456, we saw the same pattern of data from numerous upstream providers. Kindest Regards, James Braunegg [cid:image001.png@01D280A4.01865B60] 1300 769 972<tel:1300%20769%20972> / 0488 997 207<tel:1300%20769%20972> james(a)micron21.com<mailto:james@micron21.com> www.micron21.com/<http://www.micron21.com/> [cid:image002.png@01D280A4.01865B60]<http://www.micron21.com/> [cid:image003.png@01D280A4.01865B60]<https://www.facebook.com/micron21/> [cid:image004.png@01D280A4.01865B60]<https://twitter.com/micron21> Follow us on Twitter<https://twitter.com/micron21> for important service and system updates. This message is intended for the addressee named above. It may contain privileged or confidential information. If you are not the intended recipient of this message you must not use, copy, distribute or disclose it to anyone other than the addressee. If you have received this message in error please return the message to the sender by replying to it and then delete the message from your computer.

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Centurylink contact for Boise?
by Brielle 24 Jun '17

24 Jun '17

Hey all, apologies for formatting since I'm on my iPhone. Is there anyone on list that happens to know a contact for CenturyLink who can help with some major network issues going on in Boise? Nearly every customer I have with a DSL line is reporting severe and inconsistent connectivity issues with Microsoft, Reddit, Adobe, and even my servers in Washington state off of Westin. Biggest problem is that for every customer it's a different set of issues even though they are off of the same central offices. One can't get to MS, another can, while another has the reverse issue with Reddit. Mostly seeing connection timeouts to various ports (TCP and UDP), but yet can still ping the hosts. From my own DSL, for example, I can't browse reddit from one IP, but works fine from the next IP in the same subnet. That other IP can't establish an IAX2 tunnel to my coloc in WA, but my LAN firewall can. Its driving me nuts. Any insight from a CL engineer would be much appreciated. Brielle Sent from my iPhone

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IPv6 traffic percentages?
by Bajpai, Vaibhav 23 Jun '17

23 Jun '17

Hello, > nanog-isp at mail.com nanog-isp at mail.com > Wed Jan 20 12:14:42 UTC 2016 > > Hello all, > > Would those with IPv6 deployments kindly share some statistics on their percentage of IPv6 traffic? > Bonus points for sharing top IPv6 sources. Anything else than the usual suspects, Google/YouTube, Netflix and Facebook? > > Some public information I've found so far: > - Comcast around 25% IPv6 traffic (http://www.lightreading.com/ethernet-ip/ip-protocols-software/facebook-ipv6…) > - Comcast has over 1 Tb/s (of mostly YouTube traffic) over IPv6 (http://corporate.comcast.com/comcast-voices/comcast-reaches-key-milestone-i…) > - Swisscom 26% IPv6 traffic, 60% YouTube (http://www.swinog.ch/meetings/swinog27/p/01_Martin_Gysi.pdf) > > I'd be very much interested in hearing from smaller ISPs, especially those having a very limited number of IPv4 addresses and/or running out. > > Thanks, > Jared The v6 numbers from ^ NANOG post are now more than 1 year old. Thought to re-bump this thread. Would it be possible to share updated numbers of v6 traffic share within your network and % contribution by top apps. Thanks a bunch! -- Vaibhav -------------------------- Vaibhav Bajpai www.vaibhavbajpai.com Postdoctoral Researcher TU Munich, Germany --------------------------

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