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Advertise IP Pool to ISP Network



Our team has been debugging slow connectivity issues between our Load Balancer in us-east-1 and some end users that are located in India.

The IP block we are using for our elastic IP on the EC2 instance is owned by Amazon.

A traceroute directly from one of our EC2 instances on that load balancer to one of the IP's that is experiencing slow connectivity, shows that the connection becomes significantly slower once it leaves the TATA router in Newark, NJ USA.

traceroute -4 -I -n -w 30
16  5.633 ms  0.791 ms  0.789 ms
17  *  *  *
18  9.398 ms  9.276 ms  9.300 ms
19  198.610 ms  198.504 ms  198.524 ms
20  *  *  *
21  *  *  *
22  *  *  *
23  *  *  *
24  *  *  *
25  *  *  *
26  *  *  *
27  *  *  *
28  *  *  *
29  *  *  *
30  *  *  *

The ISP that our end users are using is TATA and they have reached out to their technical support.

The TATA technical support have responded with a request that AWS "advertise website IP pool directly into TATA (AS4755)".

Can AWS fulfil this request?

Due to legal constraints we are unable to distribute our application globally, so connectivity needs to be resolved within the current architecture.

1 Answers
Accepted Answer


Unfortunately AWS does not advertise and prefer specific IPs to ASNs directly by request. Typically with BGP when making such changes, you'd advertise a /24 and not a single /32 to have the preferred route out through TATA. These types of changes would affect multiple customers.

I understand that you cannot distribute your application globally, but perhaps you can put additional services in place to support your external customers. I would take a look at Global Accelerator as it may be a good fit to help optimize traffic paths for your customers.

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answered a month ago
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reviewed a month ago

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