Only the GS308 series loses connection from the Wi-Fi router

When I connect a Sony Wi-Fi router(NSD-G1000T) to Port 1 of a GS308 series switch, it receives an IP address from the DHCP server and functions as a switch for the first 3-5 seconds. 

My PC connected to Port 2 of the switch can send/receive ping both the switch and the Wi-Fi router. 

However, after the first 3-5 seconds passed, the Wi-Fi router then disconnects from the switch. After the disconnection, my PC can ping only the switch. The Wi-Fi router is missing form PC side.

[Connection Map: Not work]

Sony Wi-Fi router with DHCP Server <-- Port 1--> GS308 Switch <-- Port 2 --> PC

But if I replace the GS308 switch with GS108E, it works well.

I have multiple GS308 and GS108E, I retry and test this by each device but the result was same.

It is not individual device issue, it seems to have some compatibility issue.

[Connection Map: Work]

Sony Wi-Fi router with DHCP Server <-- Port 1--> GS108E Switch <-- Port 2 --> PC

The GS308 seems to have some compatibility issues with Sony Wi-Fi routers.

If I could solve the problem by turning off some function of the GS308, I would be grateful.

I would appreciate some advice from anyone who has had a similar experience and has a solution.