Strange traceroute result to VM in EC2, Singapore

Thu Aug 6 16:05:46 UTC 2015

I find this bizzare because even when the traceroute doesnt work, I am
actually able to ping and access the machine.

I know that the VM responds to traceroutes, since it did respond to my
traceroute when i was on the other broadband network.

So i really fail to understand why the traceroute on the other network
failed.

Any pointers on this would be very helpful.

Thanks, GLen

On Thu, Aug 6, 2015 at 8:53 PM, Glen Kent <glen.kent at gmail.com> wrote:

> Really sorry. Didnt realize that this is a text-only forum.
>
> When my traceroute to 52.74.124.136 works:
>
> ~$ traceroute 52.74.124.136
> traceroute to 52.74.124.136 (52.74.124.136), 30 hops max, 60 byte packets
> 1 xxxxxxx xxxxxxx 0.412 ms 0.472 ms 0.439 ms
> 2 xxxxxxx xxxxxxx 2.98 ms 2.971 ms 2.999 ms
> 3 xxxxxxx xxxxxxx 5.345 ms 5.546 ms 5.519 ms
> 4 xxxxxxx xxxxxxx 3.172 ms 3.051 ms 3.010 ms
> 5 if-6-2.tcore2.SVW-Singapore.as6543.net (180.87.37.14) 56.751 ms 56.285
> ms 54.592 ms
> 6 180.87.15.206 (180.87.15.206) 73.468ms 66.993 ms 66.734 ms
> 7 203.83.223.58 (203.83.223.58) 43.737 ms 43.513 ms 44.029 ms
> 8 203.83.223.15 (203.83.223.15) 47.239 ms 46.382 ms 203.83.223.74
> (203.83.223.74)  44.144 ms
> 9 203.83.223.231 (203.83.223.231) 44.431 ms 203.83.223.233
> (203.83.223.233)  45.699 ms 46.158 ms
> 10 ec2-52-74-124-136.ap-southeast-1.compute.amazon.com (52.74.124.136)
>  44.067 ms 43.492 ms 43.499 ms
>
> When it doesnt:
>
> ~$ traceroute 52.74.124.136
> traceroute to 52.74.124.136 (52.74.124.136), 30 hops max, 60 byte packets
> 1 xxxxxxx xxxxxxx 23.272 ms 25.011 ms 26.072 ms
> 2 xxxxxxx xxxxxxx 27.058 ms 28.971 ms 29.999 ms
> 3 xxxxxxx xxxxxxx 33.025 ms 33.996 ms 38.822 ms
> 4 p38895.sgw.equinix.com (202.79.197.87) 78.964 ms 60.051 ms 83.010 ms
> 5 203.83.223.4 (203.83.223.4) 63.682 ms 64.610 ms 65.837 ms
> 6 203.83.223.17 (203.83.223.17) 67.271 ms 203.83.223.23 (203.83.223.23)
> 68.521 ms 203.83.223.17 (203.83.223.17) 70.526 ms
> 7 203.83.223.233 (203.83.223.233) 71.624 ms 72.805 ms 74.471 ms
> 8 * * *
> 9 * * *
> 10 * * *
> 11 * * *
> 12 * * *
> 13 * * *
> 14 * * *
> 15 * * *
> 16 * * *
> 17 * * *
> 18 * * *
> 19 * * *
> 20 * * *
> 21 * * *
> 22 * * *
> 23 * * *
> 24 * * *
> 25 * * *
> 26 * * *
> 27 * * *
> 28 * * *
> 29 * * *
> 30 * * *
>
>