- Products
- Network Security
Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
Security ServicesComprehensive security for your network security solution
Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
Capture ATPMulti-engine advanced threat detection
Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
Secure Mobile AccessRemote, best-in-class, secure access
Wireless Access PointsEasy to manage, fast and secure Wi-FI
SwitchesHigh-speed network switching for business connectivity
- Email Security
Email SecurityProtect against today’s advanced email threats
- Cloud Security
Cloud App SecurityVisibility and security for Cloud Apps
Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
Capture ClientStop advanced threats and rollback the damage caused by malware
Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
- Products
- Network Security
- Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
- Security ServicesComprehensive security for your network security solution
- Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
- Capture ATPMulti-engine advanced threat detection
- Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
- Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
- Secure Mobile AccessRemote, best-in-class, secure access
- Wireless Access PointsEasy to manage, fast and secure Wi-FI
- SwitchesHigh-speed network switching for business connectivity
- Email Security
- Email SecurityProtect against today’s advanced email threats
- Cloud Security
- Cloud App SecurityVisibility and security for Cloud Apps
- Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
- Capture ClientStop advanced threats and rollback the damage caused by malware
- Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
Troubleshooting Sonicpoint low throughput issues
03/26/2020 
1,484 People found this article helpful
33,117 Views
Description
If you experience bad unit performance like low throughput, please consider to follow these steps.
Resolution
1. If throughput seems sluggish, check to see how many SonicPoints you have on one interface. In large deployments it's advisable to spread them across more than one. Try to limit the interfaces to a 4-to-1 subscription ratio. For example, if you have a 100Mbps, you can safely attach up to 20 SonicPoints to it and expect reasonable performance. It is NOT advisable to use the same SSID for the 802.11bg and the 802.11a radios, as clients with tri-band cards may experience disconnect issues, hence name them separately.
2. Please remember when running mixed mode (802.11a/b/g/n) if one device using 802.11g standard connects to the wireless, the 802.11n clients will run at "g" speed.
3. Please upgrade the firmware of the SonicPoints to the latest one. To do so, go to the diag.html page of your firewall (http:///diag.html example - http://192.168.168.168/diag.html), scroll down to the wireless section and click on "Update All SonicPoint's Firmware".
4. Please consider to check your WAN's MTU for the most suitable one. Test it with 1404.
5. For test reasons please disable all security services on WLAN zone. To do so, go to Network > Zones and click the Configure button. See if your throughput is getting better, if so, consider to re-enable the security services one by one and test everytime to understand which service is limiting your throughput.
6. Go to SonicPoints and press the configure button on the right hand side, next to the desired SonicPoint. Next, choose Radio Settings and under Mode choose either 2.4GHz or 5GHz in "n Only" mode. Then, choose Radio Band to Wide 40MHz Channel. Channels are to be chosen on the basis of RF score each of them gets - the higher, the better. Tick: Enable Short Guard Interval (This would avoid any kind of data loss from wireless interference) or Enable Aggregation (it increases throughput of 802.11n by sending multiple data frames in a single transmission). Under Authentication Type choose WPA2-PSK, Cipher type AES.
7. On the Advanced tab: set Preamble Length to Short, this is recommended for improved throughput. The Beacon Interval value depends on the number of VAP's. For each VAP you add, you need to increase Beacon Interval by 100.
8. Temporarily disable wireless security and test the connection with different wireless devices.
Related Articles
- Running Diagnostic Tests on Wireless Network Manager (WNM)
- Content Filter Configuration on Wireless Network Manager (WNM)
- Generate reports on Wireless Network Manager (WNM)
YES
NO