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 <[email protected]> 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:[email protected]]
>> 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
>
