Forum Discussion

Bridgford

Aspirant

Jul 17, 2018

netgear srx5308 internet speed slow

My netgear srx 5308 only gives roughly 37mb internet speed even though there is a 200mb Virgin line. Any ideas

Troubleshooting

DaneA

NETGEAR Employee Retired

Jul 19, 2018

Bridgford,

Thanks for the feedback. If you will not set the Hitron Virgin router to full bridge mode, you will have a Double NAT scenario in which this might be the reason why you are not able to get the internet speed you have subscribed through the SRX5308.

For more information about Double NAT, kindly access the articles below:

What is Double NAT?

How to fix issues with Double NAT

Regards,

DaneA

NETGEAR Community Team

fordem

Mentor

Aug 06, 2018

Whilst "doubleNAT" is not optimal, the fact that he can swap out the SRX5308 for a Draytek router and get an immediate and significant increase in throughput indicates that doubleNAT is NOT the cause of the slow down.

Bridgford
Aspirant
Aug 06, 2018
Thanks for information.

Any other ideas on how to improve speed through netgear srx5308.
- DaneA
  NETGEAR Employee Retired
  Aug 06, 2018
  Bridgford,
  
  Kindly try this. On the web-GUI of the SRX5308, go to Security > Firewall > Attack Checks then uncheck the boxes that says "Block TCP flood" and "Block UDP flood." Then, observe if the same problem will occur. Refer to the image below:
  
  Regards,
  
  DaneA
  
  NETGEAR Community Team