@Rtdz You can access the menu Firewall -> Anti ARP spoofing -> IP-MAC binding , check if you have IP-MAC binding list. Or when your client cannot get IP address, try to check the DHCP client list on...

@fdoxyz The utility should send broadcast packets that destination is 255.255.255.255 to find switch. If you cannot see your switch, you can try to disable the firewall of your PC to confirm whether...

@RootFog Try to change WAN2 detection to Auto. And you may need to wait a few minutes for WAN2 online when WAN1 internet offline.

@double_teepee As I knew, can only get the WAN status from web-GUI or system log. So maybe cannot meet your requirements.

@bolvar T1600G-52PS 2.0 supports to upgrade to the V3 firmware. I think you can download the 3.0 firmware from official website and try to upgrade, then test SNMP V3 again.

@Ocoee2 Maybe you can refer to the price on Amazon. It's 70$.