@curtiplas You also can try to reset the switch, then change the IP address for switch. Make sure the has not IP conflict. And still try to disable IGMP snooping.

@curtiplas Is your TV based on multicast? If yes, you can try to disable IGMP snooping on the switch.

@baggins1us I found the OID through the following MIB file information. So I guess that TP-Link PoE OID is began with 1.3.6.1.4.1.11863.6.56. But in your test, other OIDs already meet your...

@muhce Check if there are IPsec entries in IPsec SA list. It's for confirming IPsec VPN has been established. And make sure you have used the latest firmware for your router.

@baggins1us I think TP-Link PoE switch should be able to show PoE config through SNMP. But cannot make sure whether can show PoE status. In their private MIB file, we can see that the PoE config root...

@baggins1us Did you enable SNMP for your switch? If yes, maybe you can check if use the correct OID for PoE.