Has Level3 done away with traceroute??

Thu Sep 21 17:45:04 UTC 2017

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 at 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