Exact model-family answer directory
Ubiquiti UniFi Cloud Gateway Ultra troubleshooting
Ubiquiti UniFi Cloud Gateway Ultra (UCG-Ultra): ports (from Ubiquiti); capacity; hardware, and a fix for each symptom below.
- Ports (from Ubiquiti)One 2.5 GbE RJ45 port, commonly used as WAN, and four 1 GbE RJ45 ports.
- CapacityAbout 1 Gb/s of routing with IDS/IPS, managing over 30 UniFi devices and more than 300 clients, with multi-WAN failover and load balancing.
Ubiquiti UniFi Cloud Gateway Ultra Ethernet link is limited to 100 Mbps or disconnects
Open record Ubiquiti · slow Wi-FiUbiquiti UniFi Cloud Gateway Ultra internet or Wi-Fi is slow
Open record Ubiquiti · parental controlsUbiquiti UniFi Cloud Gateway Ultra parental controls or schedules are not working
Open record Ubiquiti · port forwardingUbiquiti UniFi Cloud Gateway Ultra port forwarding is not working
Open record Ubiquiti · restartsUbiquiti UniFi Cloud Gateway Ultra restarts, freezes or overheats
Open record Ubiquiti · double NATUbiquiti UniFi Cloud Gateway Ultra shows double NAT or strict NAT
Open record Ubiquiti · VPNUbiquiti UniFi Cloud Gateway Ultra VPN client or server will not connect
Open record Ubiquiti · setupUbiquiti UniFi Cloud Gateway Ultra will not complete setup
Open recordConfirm the model first
Which units this covers, and how to tell yours is one of them
- Model numbers and patterns
- UCG-Ultra
Published specification
What is true of this model and changes how you fix it
- Official specificationsQuad-core ARM Cortex-A53 @ 1.5GHz, 3GB RAM, 16GB storage — a smaller chip than the rack UDM Pro/SE. One 2.5GbE port, four 1GbE ports, up to 4 WAN ports. Only 1Gbps IDS/IPS throughput and 30+ managed devices / 300+ users (well under the UDM Pro's 3.5Gbps/100+/1,000+). Compact desktop form factor, 141.8 x 127.6 x 30mm, just 520g, USB-C powered at 6.2W max.
- Type — compact GATEWAY/router, NO Wi-FiThe UCG-Ultra is a small UniFi gateway (router, firewall, UniFi Network controller) with NO built-in Wi-Fi radio — it does not broadcast wireless. Wi-Fi symptoms do not apply; add separate UniFi APs. It is the compact, affordable way into the UniFi ecosystem.
- Needs separate access points'No Wi-Fi' is expected — the Wi-Fi comes from UniFi APs connected to it (via a PoE switch/injector). Troubleshoot Wi-Fi at the APs.
- UniFi controller/appRuns the UniFi Network application on-device (managed web/app). Advanced compared with consumer routers.
- HardwareA 1.5 GHz quad-core Cortex-A53, 3 GB DDR4, 16 GB eMMC, a 0.96-inch status display, and a desktop body of 141.8 x 127.6 x 30 mm.
Where these figures were read. techspecs.ui.com/unifi/cloud-gateways/ucg-ultra (UniFi Cloud Gateway Ultra - Tech Specs)
Manufacturer support for this product line. Ubiquiti Help Center — UniFi help. Official UniFi gateway, switching, Wi-Fi and controller documentation.
Also read for this model. Ubiquiti — UniFi Cloud Gateway Ultra tech specs; Ubiquiti Store — Cloud Gateway Ultra.
Exact questions
Questions that only have an answer for the Ubiquiti UniFi Cloud Gateway Ultra
I set up a UniFi Cloud Gateway Ultra but have no Wi-Fi.+
That is because the Cloud Gateway Ultra has no built-in Wi-Fi radio — it is a compact gateway/router, not a wireless router. You need to add UniFi access points (such as a U6 Pro or U7 Pro), connect them (they need PoE, from a PoE switch or injector), and adopt them in the UniFi Network application running on the gateway. Once an AP is adopted and online, it broadcasts your Wi-Fi. The gateway itself only routes.