Tuesday, June 22, 2021

AWS/EC2 Network Congestion?

Hello All!

Was wondering if anyone could help me our guide me in the right direction:

Issue:

I Have a Web Server ( EC2) Within AWS. This has a front end for users and a backend for Dev's. Often everyday We "lose" the ability to do anything within the Server, ie. browser too our backend Console, browse to basic sites such as Google, yahoo; All while the frontend stays intact for our users. During this time we will be "offline" for 10-15 mins then we are able to browse again until it happens again in another 20-30 mins, sometimes less.

During this time, i look at wireshark and im filled with TCP Retransmissions, TCP Dup ACK's.

On this server i have Two Connections(Nics), Eth 3 and Eth 4.

Eth 3 is bound to the Website and Eth 4 is bound to our Playground/Dev version of the site. On the AWS site they are within the Same VPC

Edit: After some testing i added another NIC too the server too attach to the DEV Environment to hopefully control network congestion Or even Turning that "Site" off from IIS manager and that was not the issue

Any help/tips are appreciated



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