It has recently come to our attention that older firmware versions of the Netgear M4300 can potentially cause throughput issues with 2.5Gb/ 5Gb links.

Here we see a TCP flow with many retransmissions and a non-optimal throughput.

In order to resolve this issue, the switch should be upgraded to the latest firmware version.

1) Go to https://www.netgear.com/support/product/m4300-96x.aspx#download

• Download firmware

2) Log in to your Netgear switch via the web CLI.

• The default IP is 192.168.0.100
• Username: admin
• Password excentis

3) Upload firmware.

• Go to 'Maintenance' → 'HTTP File Upgrade'

• Click 'Apply'