routing issues to AWS via 2914(NTT)

Bryan Socha bryan at
Fri Jun 13 05:50:24 UTC 2014

Amazon hasn't reached out to us either...

If you have other providers, use a combination of local-preference and the
customer communitiy strings with ntt to prepend around the circuit(s) in
nyc with the issue.  Just check your routing table, we found many going
through ntt to amazon and took awhile to get everything working as desired.

Bryan Socha
Network Engineer

On Thu, Jun 12, 2014 at 12:55 PM, Christopher Rogers <phiber at>

> Could an IP engineer from AWS (16509/14618) and one from NTT (2914) kindly
> contact me off-list?  AS18888 is having some major reachability issues to
> you via 2914.  Several of our applications and users are reporting problems
> trying to reach various aws hosted services such as netflix and twilio.
>  I'm seeing almost 50% packet loss when transiting to you via 2914.
>  Forcing traffic onto 3356 clears the issue right up.  I've had to
> effectively shift all my ingress traffic off 2914 and de-pref aws as-path
> to force egress to other transit.
> We're a customer of 2914, but not AWS.  I've got a ticket open with 2914,
> and they've reached out to AWS, but it's been two days now and we haven't
> been getting any traction on this.
> thanks!
> -chris

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