If you know the exact timeout, then just try to get dumps at the moment of disconnection, so you will see, who is the initiator of disconnection, PC or router.

What functions of firewall do you want to use? All of them are going to work only with traffic WAN<->LAN.

Yeah, it is exactly like combo-ports work :)

Probably, tp-link switch doesn't support some TLVs and it somehow affect the lldp work. I advice you to check statistics of LLDP at the problem moment, like, if LLDP counters increase, etc. Get dumps...

Yeah, check Watchguard's to be vid 301 and vid 302 tagged. That's the main thing. Do you configure vlan interfaces on switch or router? Try to ping with static IP. Check, if your router should have...

grafix4d wrote Hi all, in our small office, we have a subnet as 192.168.1.xxx. On 192.168.1.1 we have the router, on 192.168.1.5 our fileserver and ERP server our 10 PCs have static IPs from...