Re: Has Level3 done away with traceroute??

[Filip Hruska <fhr () fhrnet eu>]

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]
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--
Best Regards,
Filip Hruska
Linux System Administrator