Question Not all Devices Showing when Scanning Network

[PovGRide742]

Hello everyone,

To start, the reason this is even an issue is I run a Plex server on TrueNAS and have it set not to require anyone on my IP/Netmask (10.0.0.0/24) to log in. This works properly on my computer and my cellphone. However, I have 3 Fire Sticks that Plex without logon works properly when connected via WiFi, but when connected via Ethernet using an adapter (Cable Matters Micro USB to Ethernet Adapter).

I scanned my network using the command 'arp /a' and those devices do not show when connected via Ethernet, only when connected via WiFi. I can log in to my gateway and see the IP and MAC address of the Fire Sticks, and it confirms connected via Ethernet. I even went on the Fire Sticks and checked the subnet (255.255.255.0) to verify using /24 was correct.

I tried using the command arp /s (IP of device) (MAC of device) and upon hitting enter it doesn't give me any confirmation or error. Running arp /a afterwards still doesn't show the device.

I COULD just log into my Plex account, but this is bothering me. Any help would be greatly appreciated!

 

[Tech Junky]

Could be an IP conflict or something dumb like rebooting the sticks to get them to prefer Ethernet instead of WiFi.

 

[ch33zw1z]

Ok, what’s the ip of one of the fire sticks

do any fire sticks have other problems accessing LAN or WAN

have you tried a different USB to LAN adapter

 

[mxnerd]

However, I have 3 Fire Sticks that Plex without logon works properly when connected via WiFi, but when connected via Ethernet using an adapter (Cable Matters Micro USB to Ethernet Adapter).

You use Cable Matters Micro USB to Ethernet Adapter (https://www.amazon.com/Cable-Matters-Streaming-Including-Chromecast/dp/B07N2ZHFY9) with Amazon's Fire TV Stick instead buying Amazon's own micro USB to ethernet adapter for Fire TV stick (https://www.amazon.com/Amazon-Ethernet-Adapter-Fire-Devices/dp/B074TC662N) ?

==

OK. It says it's compatible with Amazon TV Stick.

Have you tried IP scanners for PC?

By the way, ARP cache timeout could be from minutes to hours. The IP/MAC address list is not kept forever.

If you want a better experience, you might want to run a local DNS server.

 

[ch33zw1z]

^^ Yep, I would definitely run a ping to the IP before running the arp -a, that's the best chance that the arp table is up to date when queried

IIRC: arp -s add's a static entry, this is probably not what you want.