Title: How to do if the wireless speed of Reyee device is slow? [Print this page] Author: GTAC-Sophia Time: 2024-3-5 15:49 Title: How to do if the wireless speed of Reyee device is slow? 1. Issue Description
Wireless test speed is slow, Can't test the maximum speed 2. Network topology 3. Device model and firmware
Device Type
Device Version
Reyee series AP
Common version
4. Cause Analysis
1. Insufficient bandwidth provided by ISP
2. AP 's uplink wired port bandwidth is insufficient
3. RSSI value is low
4. Low Wireless Negotiation Rate
5. High channel utilization
6. The distance of the test device test is inappropriate
7. APconfiguration incorrect 5. Troubleshooting Steps (1) Preparation before test
1.When performing speed test, it is recommended that the test device should be connected to the 5G SSID , and the number of clients who connect to the AP at the same time is 1-3, then the speed test result will be better.
2. Ensure that the test device is always within the coverage range of the AP.
3. Ensure that there are no non-WLAN interference sources on the test site, such as microwave ovens, Bluetooth, microwave therapy devices, etc. Such devices willaffect WiFi signals, causing wireless connection abnormalities (2) Insufficient bandwidth provided by ISP
If the bandwidth provided by the ISP is low, it is normal for wireless speed test to be low, and higher bandwidth needs to be applied for to obtain higher wireless speed. If the bandwidth provided by the ISP is high, then you need to connect the PC to the same switch as the AP for wired speed testing to see if the wired speed is normal. If the wired speed is normal, please proceed to the next step.
For example, the number of clients in the customer's network who need to access the Internet at the same time is 1000, but the bandwidth provided by the ISP is 1G. These bandwidths are not evenly distributed to each user. If some clients use more bandwidth, then thebandwidth that other clients can use will be relatively small. At this time, itis necessary to consider applying for higher bandwidth from the ISP. (3) AP 's uplink wired port bandwidth is insufficient
Because all wireless clients'Internet traffic must pass through the AP 's uplink wired link, it is necessary to ensure that the AP's uplink wired bandwidth is sufficient. You can view the AP's uplink bandwidth in the device's CLI by commanding "show interfaces status". Note : If the port support negotiation of AP is 1000M, but the current Speed is not 1000M, then:
1. Check if the network cable supports 1000M.
2. Check whether the port connected to the uplink device and the APsupports 1000M;
3. Replace the network cable for testing. (4) RSSI value is low
When testing the maximum speed, it isrecommended to perform speed test when the RSSI value is higher than -50 dBm.
When the user is using normally, itis recommended that the RSSI value be higher than -60 dBm for speed test.
View the RSSI value of the wirelessuser on the AP:
You can view the user 's current signal strength inthe device's CLI with the command "show dot11 associationsall-client".
Note 1: The displayed RSSI refers to the test device received signal strength, ranging from 0 to 100 (the corresponding wireless user signal strength is -95 on this basis, for example, RSSI 40 in the figure above, the corresponding wireless user signal strength is 40-95 = -55dBm)
Note 2: If the RSSI value is low(below -60dBm), it is recommended to move the test device to a position closer to the AP or increase the power of the AP appropriately, so that the testdevice user can obtain a higher RSSI value. (5) Low Wireless Negotiation Rate The relationship between test rate and negotiation rate: The actual test speed ofwireless clients is related to thenegotiation rate. The higher the negotiation rate, the higher the speed thatclients may obtain. When the ISP provides sufficient bandwidth, the actual testspeed of wireless clients can obtain about half of the negotiation rate. Forexample, if you want the actual test speed to reach 100M, and the bandwidth providedby the ISP is higher than 100M, the negotiation rate between wireless clientsand AP should be around 200M. The factors affecting the maximum negotiation rate are:
1. The wifi protocol (wifi6 or wifi 5) supported bythe AP and the test device;
2. The number of spatial streams supported by theAP and the test device;
3. The bandwidth configured by the AP. The more spatialstreams and the larger the bandwidth value, the higher the negotiation rate.You can check the product specification to confirm the number of spatialstreams and bandwidth supported by the product.
(As far as mobile phones are concerned, supporting Wi-Fi 5 means a single spatial stream, while supporting WiFi 6 means a dualspatial stream.) 1) 802.11acwireless negotiated rate set
(For example, when the wifi6 mobile phone is connected to the AP720-L (2 spatial streams, Wi-Fi5) speed test, when the AP configuration bandwidth is 80Mhz, the maximum negotiation rate can reach 866.6Mbps, the actual speed test result should be range from 400M - 500Mbps)
2) 802.11ax wireless negotiated rate set
(For example, when a computer that supports 4 spatial streams is connected toAP840-I (4 spatial streams, wifi6) for speed test, when the APconfiguration bandwidth is 80Mhz,the maximum negotiation rate can reach 2402Mbps,the actual speed test result should be range from 1200M - 1400Mbps) Test method:
1.Multiple times during the test to view the negotiation rate ofthe wireless user and the AP, to observe changes in the negotiation rate, thenegotiation rate fluctuates within a small range, the speed test result may behigher, if the negotiation rate fluctuates greatly, the speed test result Itmay be lower.
2. In addition, the negotiation rate is also related to the Channel Width. When configuring a higher Channel Width, the wireless test device and AP device will have a higher negotiation rate, but the higher the Channel Width, the greaterthe wireless interference. When the negotiation rate is low, you can change theChannel Width configuration or enable Wi-Fi 6 to improve the rate.
You can enable Wi-Fi 6:
3. If the negotiation rate is still low after modifying to WiFi 6,please try the following operations:
a) Check if the test device network adaptersupports WiFi 6;
High channel utilization will affectwireless experience of clients.
You can view the current utilization of AP 's radioin Cloud
b) Try to move the position of the test deviceto get a higher negotiation rate.
Note: If the Channel Width is lowerand the user can obtain sufficient negotiation rate, it is not recommended toincrease the Channel Width to avoid greater wireless interference. (6) High channel utilization
High channel utilization will affectwireless experience of clients.
You can view the current utilization of AP 's radioin Cloud
Idle: 0%-59%
Busy: 60%-79%
Overload: 80%-100%
If the device is launched in the cloud, you canview the channel utilization rate in the device list.
When the channel utilization state is Idle, it indicates that the channel currently used by the AP is relatively idle, and the wireless interference is small; when the channel utilization state is in the Busy or Overload state, it indicates that the channel currently used by the AP is relatively crowded, and the wireless interference is large. It is recommended to change the channel used by the AP and test again.
The working channel of the device can be changed with the following command: (7) The distance of the test device test is inappropriate The recommended test distance is: 3~5 meters, when the deployment between the AP is close, you can try to reducethe AP power to reduce wireless interference; when the test device is far fromthe AP, you can try to increase the power of the AP (it is recommended toadjust the power according to 10%~ 20% amplitude). (8) AP configuration incorrect
If there is speed limit configuration on the AP,the configuration needs to be deleted. You can check the speed limitconfiguration on the device through the command'sh run | in wlan-qos'
Welcome to Ruijie Community (https://community.ruijienetworks.com/)
