Change in IPV4 tune parameter

Products

• CA API Gateway

Issue/Introduction

Is there any impact of removing the "net.ipv4.tcp_tw_reuse = 1" parameter?

There is a recommendation from RedHat to remove this parameter and in the OS image we use, which is made available by Broadcom, this parameter is activated.

Environment

API Gateway 11.X

Resolution

The API Gateway 11.X OVA uses a Debian OS.

Aside from the different operating systems, there would be an impact. It would prevent the system from reusing TCP connections that are in the TIME_WAIT state for outbound connections. 

If you have an valid business reason to disable this parameter, please open a Support ticket. Otherwise, the parameter should remain enabled.