[outages] Zayo issues in denver?
Jeremy Chadwick
jdc at koitsu.org
Fri Dec 14 00:28:58 EST 2012
For Dallas->Denver, the latency begins between hop #7 (360.net in
LAX/Los Angeles) and hop #8 (360.net in DEN/Denver). The latency
at hop #6 is probably the result of ICMP prioritisation (indicated by
lower latency at hop #7).
For Denver->Dallas, latency and packet loss begins between hop #4
(Level3 in Denver) and hop #5 (SoftLayer in Denver).
Thus, to solve this issue, you would need to have the following 3
providers all on the phone at the same time talking to one another
simultaneously, and give all 3 of them the below traceroutes/mtrs with
evidence (because they need to know what physical interfaces the packets
are flowing across):
- 360.net / Zayo / Abovenet
- Level3
- SoftLayer
The most you can do yourself is contact the providers who you have
service with (i.e. SoftLayer and GreenhouseData.net(?)) and ask if there
is anything they can do or contact their peering providers. Contact
them and put pressure on them.
Because the issue is so far "in" (i.e. not at hop #2 or #3 within
traceroutes), there is very little you can do. Even if you had peering
arrangements with, say, L3 and 360/Zayo/AboveNet, its not evident from
the traceroutes and you'll usually be ignored (or more specifically you
will be asked repeatedly "What's your customer ID?" and if you don't
have one, basically told to sod off).
Remember: the Internet is always broken, 24x7x365, in some regard. It
sucks when your packets suffer from it, but there's very little you can
do when you don't have contractual arrangements with the providers who
are experiencing issues.
P.S. -- From my home Comcast connection in Mountain View, I see no
issues to either 208.89.160.11 nor 70.87.254.1 -- but my packets go
through completely different interfaces and/or routers than whats shown
in your traceroutes. The same goes from tests performed from my VPS in
Los Angeles (who has peering with SoftLayer directly) -- again, packets
going through completely different interfaces.
--
| Jeremy Chadwick jdc at koitsu.org |
| UNIX Systems Administrator http://jdc.koitsu.org/ |
| Mountain View, CA, US |
| Making life hard for others since 1977. PGP 4BD6C0CB |
On Fri, Dec 14, 2012 at 12:11:45AM -0500, chris wrote:
> Ok sorry, the denver side for us is 208.89.160.11 and the dallas
> softlayer side for us is 70.87.254.1
>
> You are right about different paths it appears that the route back is
> direct via level3 instead of 360/zayo and same latency is present so
> looks like more likely a softlayer issue?
>
> trace from our dallas box(softlayer) to our denver box(greenhouse):
> 2: po101.dsr01.dllstx5.networklayer.com (70.87.254.1) 1.941ms
> 3: po51.dsr01.dllstx3.networklayer.com (70.85.127.105) 2.217ms
> 4: ae16.bbr01.eq01.dal03.networklayer.com (173.192.18.224) 1.719ms
> 5: ae0.bbr01.cs01.lax01.networklayer.com (173.192.18.141) 32.448ms
> 6: 360.net.any2ix.coresite.com (206.223.143.201) 657.255ms
> 7: lax1-core-01-xe-0-0-0.360.net (66.62.2.213) 36.196ms
> 8: den1-core-01-ae0.360.net (66.62.2.169) 246.045ms
> 9: den1-edge-01-lag2.360.net (66.62.2.194) asymm 8 271.648ms
> 10: 66.62.160.30 (66.62.160.30) asymm 9 543.816ms
> 11: CYSWYDC01ESW1-001-1-1.GREENHOUSEDATA.NET (208.89.160.11) asymm 10
> 793.839ms reached
>
> from denver box to dallas (mtr is all thats installed and cant install
> anything else connectivity is too horrible)
>
>
> Packets Pings
> Host
>
> Loss% Snt Last Avg Best Wrst StDev
>
> 2. CYSWYDC01RTR1-001-0-1.GREENHOUSEDATA.NET > > 0.0% 17 0.3 0.3 0.3 0.4 0.0
> 3. ge-6-13.car2.Denver1.Level3.net > > 5.9% 17 4.6 121.9 4.6 417.4 116.1
> 4. ae-21-52.car1.Denver1.Level3.net > > 0.0% 17 101.9 25.2 2.9 140.6 40.6
> 5. te1-5.bbr01.cf01.den01.networklayer.com > > 43.8% 17 565.9 479.9 169.5 919.2 214.1
> 6. ae7.bbr01.cs01.den01.networklayer.com > > 37.5% 17 642.3 665.4 170.0 928.8 261.4
> 7. ae12.bbr02.eq01.dal03.networklayer.com > > 50.0% 17 1168. 650.2 95.4 1168. 391.4
> 8. po32.dsr01.dllstx3.networklayer.com > > 31.2% 17 423.9 643.3 80.0 1135. 368.2
> 9. po101.dsr01.dllstx5.networklayer.com > > 50.0% 16 347.1 814.1 347.1 1874. 508.6
>
> thanks for pointing it out
> chris
>
> On Fri, Dec 14, 2012 at 12:00 AM, Jeremy Chadwick <jdc at koitsu.org> wrote:
> >
> > Chris,
> >
> > You need to provide traceroutes from both directions. The below is for
> > Dallas --> Denver, but the return path (Denver --> Dallas) needs to be
> > provided too. You might find that the return path goes through some
> > provider other than Zayo/360/Abovenet/whateverthey'recalledtoday.
> >
> > I know that's hard to do when the path has latency or packet loss (which
> > you don't show in your results -- you only show latency), but this is
> > exactly what a cronjob traceroute writing to a log file is for. :-)
> >
> > My point: remember that routing on the Internet most of the time is
> > asymmetric. Reference material (read, do not skim):
> >
> > http://www.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N47_Sun.pdf
> >
> > Finally, you didn't provide IP addresses of either server (in Denver or
> > Dallas), so when you ask for "someone else to test", that's not easily
> > doable, at least not to the endpoints involved (pinging routers is not
> > sufficient evidence, sadly).
> >
> > --
> > | Jeremy Chadwick jdc at koitsu.org |
> > | UNIX Systems Administrator http://jdc.koitsu.org/ |
> > | Mountain View, CA, US |
> > | Making life hard for others since 1977. PGP 4BD6C0CB |
> >
> > On Thu, Dec 13, 2012 at 11:10:32PM -0500, chris wrote:
> > > Seeing massive packet loss and high latency from 360.net (which appears to
> > > be owned by zayo/abovenet/whatever) in denver....
> > >
> > > Here is a trace snip from our server @ softlayer in dallas to one of our
> > > servers in denver
> > >
> > > 5: ae0.bbr01.cs01.lax01.networklayer.com (173.192.18.141) 29.698ms
> > > 6: no reply
> > > 7: 66.62.2.213 (66.62.2.213) 4588.320ms
> > > 8: den1-core-01-xe-1-1-0.360.net (66.62.2.166) 22583.831ms
> > >
> > > I only have one one server in denver that I can reproduce this with hoping
> > > someone can else can test and reproduce similar issues
> > >
> > > thanks
> > > chris
> >
> > > _______________________________________________
> > > Outages mailing list
> > > Outages at outages.org
> > > https://puck.nether.net/mailman/listinfo/outages
> >
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