[outages] Packet loss to 8.8.8.8 and other google IPs (Dallas)
Matthew Blackstone
blackstone at indeed.com
Mon Aug 29 16:24:43 EDT 2016
Google public dns is anycast so trying to hit from a different location
will most likely result in a different destination.
https://developers.google.com/speed/public-dns/faq
Matt Blackstone
Network Engineer
On Mon, Aug 29, 2016 at 1:54 PM, Damian Menscher via Outages <
outages at outages.org> wrote:
> This appears to be a problem on the Level3 network in the DFW region,
> which is why only some of you see it. (Those who don't see it are in other
> regions, peering with Google directly, or using other transit providers.)
>
> For those seeing issues, I suggest escalating to Level3, perhaps after
> trying a reverse-traceroute from http://lg.level3.net/ (I can't do this
> test since you didn't specify your source IP.)
>
> Damian
>
> On Mon, Aug 29, 2016 at 11:14 AM, Dan White <dwhite at olp.net> wrote:
>
>> We are seeing packet loss to google hosts, hosted in Dallas. Any anyone
>> seeing this?
>>
>> MTR output:
>>
>> Host Loss% Snt Last Avg Best Wrst
>> StDev
>> 1. 10.0.2.1 0.0% 51 2.4 1.9 0.5 5.2
>> 0.7
>> 2. olp-67-217-152-5.olp.net 0.0% 51 0.4 3.7 0.3 27.8
>> 4.9
>> 3. olp-67-217-158-29.olp.net 0.0% 50 0.3 4.5 0.3 22.0
>> 5.3
>> 4. olp-67-217-151-125.olp.net 0.0% 50 0.6 4.9 0.6 33.3
>> 6.8
>> 5. olp-67-217-158-30.olp.net 0.0% 50 0.6 6.4 0.5 64.0
>> 10.5
>> 6. olp-67-217-158-21.olp.net 0.0% 50 11.4 4.4 1.1 13.6
>> 4.1
>> 7. xe-8-3-0.bar2.tulsa2.level3.net 0.0% 50 1.2 2.7 1.2 27.5
>> 5.5
>> 8. ae-0-11.bar1.tulsa2.level3.net 0.0% 50 2.0 4.1 1.9 44.5
>> 7.8
>> 9. ae-3-3.ebr4.dallas1.level3.net 91.8% 50 20.5 20.5 20.5 20.5
>> 0.0
>> 10. ae-8-0.ear3.dallas1.level3.net 93.9% 50 20.6 20.6 20.6 20.7
>> 0.0
>> 11. google-level3-100g.dallas1.leve28.0% 50 20.5 20.7 20.4 29.6
>> 1.5
>> 12. 108.170.240.193 22.0% 50 20.8 20.7 20.7 20.9
>> 0.0
>> 13. 64.233.175.9 26.0% 50 20.7 20.7 20.7 20.8
>> 0.0
>> 14. google-public-dns-a.google.com 24.0% 50 20.5 20.6 20.5 25.9
>> 0.9
>>
>> The problematic hop appears to be either 10 or 11 (level3-100g). Compare
>> to:
>>
>> Host Loss% Snt Last Avg Best Wrst
>> StDev
>> 1. 10.0.2.1 0.0% 124 0.8 1.6 0.5 4.6
>> 0.5
>> 2. olp-67-217-152-5.olp.net 0.0% 124 3.8 4.3 0.3 29.9
>> 5.6
>> 3. olp-67-217-158-29.olp.net 0.0% 124 0.3 3.5 0.3 26.1
>> 4.9
>> 4. olp-67-217-151-125.olp.net 0.0% 124 6.6 3.3 0.6 20.0
>> 3.7
>> 5. olp-67-217-158-30.olp.net 0.0% 124 0.6 7.1 0.6 44.1
>> 9.8
>> 6. olp-67-217-158-21.olp.net 0.8% 124 11.9 4.8 1.1 14.9
>> 4.3
>> 7. xe-8-3-0.bar2.tulsa2.level3.net 0.0% 123 1.3 4.0 1.1 68.3
>> 11.3
>> 8. ae-0-11.bar1.tulsa2.level3.net 0.8% 123 2.1 3.9 1.9 62.3
>> 8.1
>> 9. ae-3-3.ebr4.dallas1.level3.net 94.3% 123 20.5 20.6 20.5 20.6
>> 0.0
>> 10. ae-2-3512.edge2.dallas1.level3. 0.0% 123 20.4 22.1 20.3 68.0
>> 7.1
>> 11. b.resolvers.level3.net 0.0% 123 20.2 20.3 20.2 22.8
>> 0.3
>>
>>
>> --
>> Dan White
>> BTC Broadband
>> Network Admin Lead
>> Ph 918.366.0248 (direct) main: (918)366-8000
>> Fax 918.366.6610 email: dwhite at olp.net
>> http://www.btcbroadband.com
>>
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>
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