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Has Level3 done away with traceroute??
I just performed a few traceroutes.
Comcast to 4.2.2.2
5. hu-0-11-0-0-ar03.ivyland.pa.panjde.comcast.net
 6. xe-4-0-0.edge1.Toronto.Level3.net
 7. ???
 8. b.resolvers.Level3.net
Comcast to Level3 customer
 5. hu-0-11-0-0-ar03.ivyland.pa.panjde.comcast.net
 6. xe-4-0-0.edge1.Toronto.Level3.net
 7. ae-11-11.bar1.Philadelphia1.Level3.net
 8. XXXXXXXX.bar1.Philadelphia1.Level3.net
I see the problem for sure FROM a Level3 Philadelphia customer to other
destinations though.
On 9/21/2017 1:45 PM, Filip Hruska 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 canâ??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? Iâ??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
>>
>> 1Â Â *
>> Â Â Â Â ae-2.a00.snjsca04.us.bb.gin.ntt.net (129.250.3.58) 3 msec 1 msec
>> Â 2Â Â *Â *Â *
>> Â 3Â Â *Â *Â *
>> Â 4Â Â *Â *Â *
>> Â 5Â Â *Â *Â *
>> Â 6Â Â *Â *Â *
>>
>>
>> TATA looking glass
>> traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets
>> 1Â 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)Â 1.253
>> ms 1.177 ms
>> Â Â Â Â Â 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
>> 3Â 195.219.50.50 (195.219.50.50)Â 1.144 ms *Â 2.246 ms
>> 4Â * * *
>> 5Â * * *
>> 6Â * * *
>> 7Â * * *
>> 8Â * * *
>> 9Â * * *
>> 10Â * * *
>>
>>
>> Telia looking glass
>> traceroute to 4.7.6.4 (4.7.6.4), 30 hops max, 52 byte packets
>> 1Â 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)Â 1.253
>> ms 1.177 ms
>> Â Â Â Â Â 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
>> 3Â 195.219.50.50 (195.219.50.50)Â 1.144 ms *Â 2.246 ms
>> 4Â * * *
>> 5Â * * *
>> 6Â * * *
>> 7Â * * *
>> 8Â * * *
>> 9Â * * *
>> 10Â * * *
>>
>>
>> Level3 looking glass
>> Traceroute results from Atlanta, GA to
>> 4.200.65.42(dialup-4.200.65.42.Dial1.LosAngeles1)
>>
>> Â Â 1Â 0.0.0.0Â * * *
>> Â Â 2Â 0.0.0.0Â * * *
>> Â Â 3Â 0.0.0.0Â * * *
>> Â Â 4Â 0.0.0.0Â * * *
>> Â Â 5Â 0.0.0.0Â * * *
>> Â Â 6Â 0.0.0.0Â * * *
>> Â Â 7Â 0.0.0.0Â * * *
>> Â Â 8Â 0.0.0.0Â * * *
>> Â Â 9Â 0.0.0.0Â * * *
>> Â 10Â 0.0.0.0Â * * *
>> Â 11Â 0.0.0.0Â * * *
>>
>> --
>> Donovan Van Dyk
>> SOC Network Engineer
>> Fort Lauderdale, FL USA
>>
>> [cid:image001.png at 01D332DA.F4DD00A0]
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>>
>