RouterFix directory

Router Problems: Find a Safe First Check

Choose the connection symptom you can actually observe, then follow steps to separate ISP, router, Wi-Fi and client-device causes.

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42 entries · Filter locally or follow any link.

Wi-Fi connected but no internetDoes every device fail, including a wired test?Router WAN IP is 0.0.0.0Is the modem/ONT cable connected to the intended WAN port?WAN address exists but websites failIs the failure DNS-specific or all upstream communication?Ethernet works but Wi-Fi is slowDoes the same client improve near the main router?Wired and wireless internet are both slowIs the slowdown upstream of the radio path?Only the mesh-node room is slowDoes the node report its intended backhaul?Ethernet negotiates 100 MbpsWhich exact cable segment negotiated 100 Mbps?Adding a switch reduced speedDoes bypassing this switch change the same test?Deco still uses wireless backhaulIs the cable on the correct side of the main Deco?Deco goes offline after Ethernet wiringWas a second or upstream path added?AiMesh wireless node disappeared after Ethernet modeWas global Ethernet-only mode enabled before every node was wired?AiMesh uplink differs from intended priorityIs this a mixed wired/wireless topology?eero features disappeared in bridge modeIs an upstream router now providing DHCP/NAT?eero shows a solid red lightIs the gateway offline or only one node?eero light is offWas the status LED disabled while networking still works?Nest Wifi Pro will not join older Google WifiAre the two units from different mesh generations?Nest Wifi Pro yellow lightIs the light solid/slow/fast and was Reset pressed?Linksys child node will not pairDo parent revision and firmware support this method?Linksys setup color differs from an old guideDoes the guide describe the exact Cognitive/older model?Orbi satellite will not syncAre router and satellite explicitly supported together?Orbi magenta lightIs this router ring, satellite ring or power LED?UniFi wireless AP has no uplinkAre power and intended mesh parent available?UniFi wired AP network became unstableWas Mesh Connect enabled on an already wired AP?AP does not start on a PoE portDo the device and power source requirements match?ASUS WireGuard client option is missingDoes this exact model/firmware expose WireGuard client?Only some devices use ASUS VPNWhich devices were assigned to the profile?Home VPN server cannot be reached remotelyWas the test performed from a different network?VPN connects but no internetAre DNS and allowed routes working independently?VPN cannot reach the remote LANDo local, remote and tunnel subnets overlap?GL.iNet kill switch behaves unexpectedlyIs the matched tunnel’s own kill switch enabled?Hotel captive portal does not openIs the portal allowed to complete before VPN-only traffic is enforced?eero VPN does not cover every LAN deviceIs Guardian active only on the user device?Xfinity 10.0.0.1 is inaccessibleDoes this gateway require app enablement of Admin Tool access?Internet failed after Xfinity bridge modeIs one configured downstream router connected?BGW passthrough reached the wrong deviceWas the personal router WAN MAC selected?T-Mobile gateway has no bridge optionIs this the supported consumer 5G gateway service scope?Port forwarding is unavailable on T-Mobile gatewayDoes the ISP/service permit inbound reachability?Verizon IoT devices remain accessible from LANWas isolation assumed from the SSID name alone?Cannot turn off Starlink bypass in the appIs the hardware-specific reset/recovery procedure available?Firmware file does not match the routerHave region and hardware revision been matched?Is this router still supported?Is there an exact lifecycle notice rather than an age-based guess?WAN is in shared address spaceIs the address actually within 100.64.0.0/10?
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