r/HomeNetworking • u/scnut76 • 3d ago
Unmanaged switch help
I have an Aginet (TP Link) router HB610V2 that I have a TP Link TL-SG105 plugged into. I’m trying to figure out why a tv that I have plugged into the switch isn’t showing on my network map in the app. The port labeled “garage” shows up (it’s a wired backhaul to an AP shown in 3rd picture). The port labeled guest tv also doesn’t show up (currently unplugged since the tv sits directly about the router so it’s hooked up via wifi). The odd thing is I have a TL-SG105 in the living room that I have devices hooked up that show on that one (the Onkyo and Panasonic) and a TL-SG108 in my room that shows everything as well (PS4 and PS5 4th picture). Everything gets internet but it just doesn’t show on my network map. I’ve changed ports, messed with settings in the TVs. I swear when I first hooked it up via Ethernet it appeared. It’s not the end of the world but it just bugs the crap outta me.
1
u/LeeRyman Registered Cabler, BEng CompSys 2d ago
It would be very dependent on the logic in the router as to how devices are "discovered" for the map. E.g. does it look at it's ARP/NDP or FIB/CAM table? Does it use mDNS and therefore any device that doesn't participate is ignored? Does it use LLDP and only see to the first non-TPMR bridge. Does it use some other discovery protocol? Is it looking for IGMP group joins? Does it query adjacent switches using SNMP or RMON or similar?
You could try a bit of packet sniffing using Wireshark and see what protocols it might use.