Receiving only 100Mbps despite a 1Gbps connection
Receiving only 100Mbps despite a 1Gbps connection
Hi Everyone! I'm working with an Unifi UDR setup that includes two U6 LR APs and two HP Gig switches. The 2.5Gig port from the UDR connects to one of the HP switches via a CAT6 cable, which in turn links to another HP switch upstairs using the same CAT6 connection. All cables are under 30 meters long. Speed tests from the UDR indicate around 700Mbps, while my phone and desktop show only about 100Mbps. I've reset both switches just in case there were configuration issues. My guess is the cables might be old or damaged, causing performance drops.
Are you sure the APs have access to a 1gbps connection? Have you tried using Ubiquiti’s WiFiman app on your device? It can show you the exact speed going to your phone and assist with troubleshooting.
The app indicates you’re connecting to the wired uplink. When you select an AP from the list and tap “Uplink (Wired)”, it shows the devices running at Gb speed.
I’d search for lost packets or transmission errors, unsure of the exact steps in Ubiquity but if you notice interference, it might be worth checking. Just because the session is short doesn’t rule out problems. You might want to reroute the connection to test. Another often ignored point is whether all power cables are properly grounded; the shielding on switches and cables must be connected or it won’t block RF effectively. If the speed drops below 2.5gbit, it could indicate a faulty or damaged Ethernet cable.
Is the Wi-Fi QoS/Bandwidth Limiting feature activated on the access points? It limits performance to 100Mbps due to processor constraints in the APs, which is also the maximum level the controller permits you to adjust. Adjust your 5GHz channel to either 40MHz or 80MHz if not already configured. Avoid using 160MHz in 5GHz; it should only be applied in extremely rare cases. The 2.4GHz band will operate at 20MHz and will similarly cap around 100Mbps on most devices.