Re: Has Level3 done away with traceroute??

[Mel Beckman <mel () beckman org>]

I am able to traceroute in and out of Level3, but it seems like some L3 internal hops are missing, as I appear to go 
straight from the L3 edge router to my L3 customer agg router:

traceroute to 206.83.0.42 (206.83.0.42), 64 hops max, 52 byte packets
 1  47.155.227.1 (47.155.227.1)  4.318 ms  4.661 ms  4.715 ms
 2  172.102.107.166 (172.102.107.166)  10.202 ms  7.521 ms
    172.102.102.240 (172.102.102.240)  7.240 ms
 3  ae8---0.scr02.lsan.ca.frontiernet.net (74.40.3.49)  9.609 ms  7.501 ms
    ae8---0.scr01.lsan.ca.frontiernet.net (74.40.3.37)  5.298 ms
 4  ae0---0.cbr01.lsan.ca.frontiernet.net (74.40.3.198)  7.169 ms  7.015 ms  7.277 ms
 5  * * *
 6  ae-4-90.edge1.losangeles9.level3.net (4.69.144.202)  8.384 ms  7.012 ms
    ae-2-70.edge1.losangeles9.level3.net (4.69.144.74)  9.865 ms
 7  ae-2-70.edge1.losangeles9.level3.net (4.69.144.74)  7.471 ms
    ae-3-80.edge1.losangeles9.level3.net (4.69.144.138)  6.551 ms
    ae-2-70.edge1.losangeles9.level3.net (4.69.144.74)  10.520 ms
 8  4.68.111.22 (4.68.111.22)  9.010 ms  7.445 ms  7.314 ms
 9  sba1-ar1-xe-11-0-0-0.us.twtelecom.net (35.248.2.6)  9.788 ms  9.536 ms  10.266 ms
10  206-190-77-10.static.twtelecom.net (206.190.77.10)  14.739 ms  12.525 ms  9.979 ms
11  iris1.jet.net (206.83.0.42)  10.285 ms  9.880 ms  10.063 ms

traceroute to 47.155.227.1 (47.155.227.1), 64 hops max, 40 byte packets
 1  router1.sb.becknet.com (206.83.0.1)  1.270 ms  1.023 ms  0.352 ms
 2  206-190-77-9.static.twtelecom.net (206.190.77.9)  0.799 ms  0.741 ms  0.785 ms
 3  ae1-90g.ar7.lax1.gblx.net (67.17.75.18)  3.052 ms  3.126 ms  2.957 ms
 4  ae10.edge1.losangeles9.level3.net (4.68.111.21)  3.456 ms  3.043 ms  2.981 ms
 5  * * *
 6  4.16.30.130 (4.16.30.130)  27.564 ms  3.574 ms  3.445 ms
 7  ae1---0.scr02.lsan.ca.frontiernet.net (74.40.3.213)  3.489 ms ae1---0.scr01.lsan.ca.frontiernet.net (74.40.3
.197)  3.396 ms ae1---0.scr02.lsan.ca.frontiernet.net (74.40.3.213)  3.428 ms
 8  be10---0.lcr21.lsan.ca.frontiernet.net (74.40.3.38)  11.736 ms  5.026 ms be10---0.lcr22.lsan.ca.frontiernet.
net (74.40.3.50)  9.858 ms
 9  47.155.227.1 (47.155.227.1)  6.545 ms  5.398 ms  6.499 ms

 -mel beckman

> On Sep 21, 2017, at 10:45 AM, Filip Hruska <fhr () fhrnet eu> wrote:
>
> Hi,
>
> Did a measurement with RIPE Atlas and it seems like a worldwide problem, based on data from 100 probes.
>
> https://atlas.ripe.net/measurements/9324230/#!tracemon
>
>
> Dne 9/21/17 v 19:10 Van Dyk, Donovan via NANOG napsal(a):
> > Hello All,
> >
> > Recently I was troubleshooting a network event for a client of our who resides on the Level3 network. While trying 
> > to verify the path, I noticed I am no longer able to traceroute through the Level3 network.
> > The funny thing is this is not just isolated to the /32. It appears to be that the entire 4.0.0.0/9 network is no 
> > longer able to traceroute through. Everything dies on their edge network.
> >
> > This appears to be isolated to traceroute. I have check this in NA and EU.
> >
> > My carrier contacted Level3 who pretty much stated that they can’t provide anything.
> >
> > I have checked multiple looking glasses and other online tools and none of them make it. Even Level3 looking glass 
> > drops the packets.
> >
> > Does anyone know anything about this? I’m pretty sure this is the first time we are seeing this.
> >
> >
> > Random 4.0.0.0/9 address.
> >
> > NTT looking glass
> > Tracing the route to 4.35.230.7
> >
> > 1   *
> >     ae-2.a00.snjsca04.us.bb.gin.ntt.net (129.250.3.58) 3 msec  1 msec
> >  2   *  *  *
> >  3   *  *  *
> >  4   *  *  *
> >  5   *  *  *
> >  6   *  *  *
> >
> >
> > TATA looking glass
> > traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets
> > 1  if-ae-14-3.tcore2.FNM-Frankfurt.as6453.net (195.219.87.89)  2.056 ms if-ae-6-2.tcore1.FR0-Frankfurt.as6453.net 
> > (195.219.50.173)  1.253 ms  1.177 ms
> >      MPLS Label=616998 CoS=0 TTL=1 S=1
> > 2  195.219.50.50 (195.219.50.50)  1.214 ms  1.247 ms  1.535 ms
> > 3  195.219.50.50 (195.219.50.50)  1.144 ms *  2.246 ms
> > 4  * * *
> > 5  * * *
> > 6  * * *
> > 7  * * *
> > 8  * * *
> > 9  * * *
> > 10  * * *
> >
> >
> > Telia looking glass
> > traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets
> > 1  if-ae-14-3.tcore2.FNM-Frankfurt.as6453.net (195.219.87.89)  2.056 ms if-ae-6-2.tcore1.FR0-Frankfurt.as6453.net 
> > (195.219.50.173)  1.253 ms  1.177 ms
> >      MPLS Label=616998 CoS=0 TTL=1 S=1
> > 2  195.219.50.50 (195.219.50.50)  1.214 ms  1.247 ms  1.535 ms
> > 3  195.219.50.50 (195.219.50.50)  1.144 ms *  2.246 ms
> > 4  * * *
> > 5  * * *
> > 6  * * *
> > 7  * * *
> > 8  * * *
> > 9  * * *
> > 10  * * *
> >
> >
> > Level3 looking glass
> > Traceroute results from Atlanta, GA to 4.200.65.42(dialup-4.200.65.42.Dial1.LosAngeles1)
> >
> >   1  0.0.0.0  * * *
> >   2  0.0.0.0  * * *
> >   3  0.0.0.0  * * *
> >   4  0.0.0.0  * * *
> >   5  0.0.0.0  * * *
> >   6  0.0.0.0  * * *
> >   7  0.0.0.0  * * *
> >   8  0.0.0.0  * * *
> >   9  0.0.0.0  * * *
> >  10  0.0.0.0  * * *
> >  11  0.0.0.0  * * *
> >
> > --
> > Donovan Van Dyk
> > SOC Network Engineer
> > Fort Lauderdale, FL USA
> >
> > [cid:image001.png@01D332DA.F4DD00A0]
> > The information contained in this electronic mail transmission and its attachments may be privileged and 
> > confidential and protected from disclosure. If the reader of this message is not the intended recipient (or an 
> > individual responsible for delivery of the message to such person), you are strictly prohibited from copying, 
> > disseminating or distributing this communication. If you have received this communication in error, please notify 
> > the sender immediately and destroy all electronic, paper or other versions.
>
> -- 
> Best Regards,
> Filip Hruska
> Linux System Administrator