I am not able to get a wireless network to function. Please help me understand what is going on.
I have the following hardware:
Two Cisco WAP 371 accesspoints
Cisco Small Business SG200-10FP switch with PoE
Small unmanaged DLink 4 port switch
Router from ISP. Brand not known. The internet connection is fiber and has 50Mbits up and down.
Router -> Cisco Switch -> 2x Access Points
Laptops and iPhones can connect to the wireless network but speedtest failes on all devices. Sometimes it gets 0.2Mbits up and down.
If I connect to the switch using a wire then internet connection is perfect - 50Mbits both ways.
I tried to change the passwords for both SSID's (2.4 and 5 Ghz) without luck. Changed the access points login password. These two steps were made to exclude any potential hack or unwanted usage of the wireless network. No luck.
The wireless and ethernet led indicators blinks continuously.
I have take the access point to a different location and there they work perfectly. No configuration change compared to the problematic site. The laptops and iPhones works perfectly in other wireless networks.
I was thinking of noise and the I borrowed a radio frequency analyser and examined the 2.4 and 5Ghz areas. If the access points are turned off there is no signal so I excluded the possibility of noise. But when I turned on the access points there is continuous signal in the 2.4 and 5Ghz areas. I have attached an image of the 2.4 Ghz area. Normally access points only transmit when data is being transmitted. I checked my own wireless network and confirmed this.
If I disconnect the router then the RF signal disappears and the LED indicators stop blinking. If I connect the router again the RF goes up again and the LEDs start blinking.
When doing a local share on one laptop and downloading a large file from laptop 1 to laptop 2 and no router is connected then a get a transmit speed of 6-8 megabyte per second. If I connect the router then no download is possible from laptop 1 to laptop 2.
So I only conclude that the router must do something bad. I have ordered a new one.
But how can a router do this? Is there a mechanism where a router can jam a wireless network?
I am hoping that the new router fixes the problem, but I am still rather concerned.
Thank you in advance for your time and expertise.