Tata Scenic routing in LAX area?

Thu Nov 15 20:29:36 UTC 2018

On Thu, Nov 15, 2018 at 3:21 PM Michael Still <stillwaxin at gmail.com> wrote:

> FYI 29791 isn't the only origin I'm seeing this on from one point of view:
>                       AS path: 3257 6453 9498 4637
>                       AS path: 3257 6453 9498 4637 10310 26085 14210
>                       AS path: 3257 6453 9498 4637 20773 29066
>                       AS path: 3257 6453 9498 4637 2906
>                       AS path: 3257 6453 9498 4637 2906 40027
>                       AS path: 3257 6453 9498 4637 29791
>                       AS path: 3257 6453 9498 4637 30844
>                       AS path: 3257 6453 9498 4637 30844 36991
>                       AS path: 3257 6453 9498 4637 30844 38056 38056 38056
>                       AS path: 3257 6453 9498 4637 37468 37230
>                       AS path: 3257 6453 9498 4637 37468 37230 37230 37230
>                       AS path: 3257 6453 9498 4637 47869
>                       AS path: 3356 6453 9498 4637
>                       AS path: 3356 6453 9498 4637 1299 2906
>                       AS path: 3356 6453 9498 4637 1299 3491 20485 20485
> 4809 49209
>                       AS path: 3356 6453 9498 4637 20773 29066
>                       AS path: 3356 6453 9498 4637 2906
>                       AS path: 3356 6453 9498 4637 29791
>                       AS path: 3356 6453 9498 4637 30844
>                       AS path: 3356 6453 9498 4637 30844 36991
>                       AS path: 3356 6453 9498 4637 30844 38056 38056 38056
>                       AS path: 3356 6453 9498 4637 37468 37230
>                       AS path: 3356 6453 9498 4637 37468 37230 37230 37230
>                       AS path: 3356 6453 9498 4637 47869
>
> I'm not sure what is supposed to be there for 6453_9498 but I suspect not
> nearly as much as is currently present (only 4637 listed here for brevity).
>
>
huh... us-carrier -> tata -> airtel -> telstra .. that seems TOTALLY
PLAUSIBLE.. no.

>
>
> On Thu, Nov 15, 2018 at 2:53 PM John Weekes <jw at nuclearfallout.net> wrote:
>
>> Marcus,
>>
>> From route-views output, it looks like AS9498/airtel is probably leaking
>> your route between two of its upstreams (AS6453/Tata and AS4637/Telstra)
>> overseas, funneling some of your traffic through their router.
>>
>> route-views>sh ip bgp 23.92.178.22 | i 9498
>>   3356 6453 9498 4637 29791
>>   1403 6453 9498 4637 29791
>>   3549 3356 6453 9498 4637 29791
>>   19214 3257 6453 9498 4637 29791
>>   1403 6453 9498 4637 29791
>>   286 6453 9498 4637 29791
>>   53364 3257 6453 9498 4637 29791
>>   3257 6453 9498 4637 29791
>>   1239 6453 9498 4637 29791
>>   2497 6453 9498 4637 29791
>>   57866 6453 9498 4637 29791
>>   7660 2516 6453 9498 4637 29791
>>   701 6453 9498 4637 29791
>>   3561 209 6453 9498 4637 29791
>>
>> You might try halting advertisements to your AS4637/Telstra peer while
>> you contact AS9498.
>>
>> -John
>>
>> On 11/15/2018 10:43 AM, Marcus Josephson wrote:
>>
>> Anyone else seeing an odd Scenic routing in the LAX/SJE area for tata.
>>
>>
>>
>> traceroute to 23.92.178.22 (23.92.178.22), 30 hops max, 52 byte packets
>>
>> 1  if-ae-13-2.tcore2.lvw-los-angeles.as6453.net (64.86.252.34)  180.698
>> ms  180.610 ms  181.712 ms
>>
>>      MPLS Label=344269 CoS=0 TTL=1 S=1
>>
>> 2  if-ae-7-2.tcore2.svw-singapore.as6453.net (180.87.15.25)  189.327 ms
>> if-ae-7-2.tcore2.svw-singapore.as6453.net (64.86.252.37)  176.800 ms
>> if-ae-7-2.tcore2.svw-singapore.as6453.net (64.86.252.39)  174.631 ms
>>
>>      MPLS Label=609315 CoS=0 TTL=1 S=1
>>
>> 3  if-ae-20-2.tcore1.svq-singapore.as6453.net (180.87.96.21)  174.287
>> ms  173.370 ms  173.804 ms
>>
>> 4  120.29.215.202 (120.29.215.202)  179.104 ms  179.367 ms  179.324 ms
>>
>> 5  182.79.152.247 (182.79.152.247)  180.164 ms 182.79.152.253
>> (182.79.152.253)  184.816 ms 182.79.152.247 (182.79.152.247)  250.928 ms
>>
>> 6  unknown.telstraglobal.net (202.127.73.101) [AS  4637]  173.974 ms
>> 173.986 ms  173.484 ms
>>
>> 7  i-93.sgpl-core02.telstraglobal.net (202.84.224.189) [AS  4637]
>> 175.094 ms  175.699 ms  174.343 ms
>>
>> 8  i-10850.eqnx-core02.telstraglobal.net (202.84.140.46) [AS  4637]
>> 280.686 ms  288.703 ms  280.836 ms
>>
>> 9  i-92.eqnx03.telstraglobal.net (202.84.247.17) [AS  4637]  278.021 ms
>> 276.637 ms  302.249 ms
>>
>> 10  equinix-ix.sjc1.us.voxel.net (206.223.116.4)  174.139 ms  174.163
>> ms  174.067 ms
>>
>>
>>
>>
>>
>> Marcus Josephson
>>
>> IP Operations
>>
>>
>>
>> mjosephson at inap.com
>>
>>
>>
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>>
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>>
>>
>>
>>
>
> --
> [stillwaxin at gmail.com ~]$ cat .signature
> cat: .signature: No such file or directory
> [stillwaxin at gmail.com ~]$
>
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