I have a small home network with the following configuration:
- 192.168.1.254 -> Gateway/DHCP/DNS
- 192.168.1.1 - 192.168.1.127 -> DHCP Range
- 192.168.1.215 - 192.168.1.253 -> Various IPs in this range are used for static IP devices.
The problem is that I have one laptop that, when connected wirelessly, cannot ping (or detect at all) wired devices. I receive the 'Destination Host Unreachable' error. The device I am trying to ping has an IP of 192.168.1.244. To be clear, I have tested with other laptops and they can ping 192.168.1.244 while connected via wireless. My iPhone also sees the device with that IP when testing using a network scanner app. It is a problem SPECIFIC to this machine. It is also specific to the wireless interface; if I use an ethernet cable, I can ping the IP just fine.
Some more details on what I have tried:
- Update the wireless card drivers (Dell wireless 1901 card on Windows 10)
- Updating Windows
- Give the laptop a static IP
- Let the laptop get an IP from DHCP
- Disable the ethernet interface
- arp -a results in wireless devices and the gateway, but no wired devices.
- Tracert also results in the 'Destination Host Unreachable' error.
- The router is a U-Verse router, I checked everywhere on the admin page to see if the device was in some sort of quarantine.
- Reinstall Windows (Not an upgrade where you keep all your files - I wiped the disk and started over)
I have checked other questions (like this one) but I know that my devices are on the same subnet AND I know that wired devices can communicate with wireless devices on my network - again, this is the only device I have this issue with. When I have a chance, I'm going to try arp -s and manually add the device and see if that works. After that, I don't know what to chalk this up to besides a faulty or dying network card.
What am I missing?
UPDATE: The wireless card supports 2.4GHz and 5GHz. I have found that if I connect to the 5GHz network, this issue is resolved. I have most devices connected to the 2.4GHz network, so I know that is not the issue.