SG350-10 Lost access after setting up DHCP pool and IPv4 interface

[ToTT]

I am a very newbie to Cisco, so please bear with me.

So, I want to setting up DHCP for a VLAN.

I did every step based on this youtube video https://www.youtube.com/watch?v=Rw7tI1tAhMo

So, I connect ethernet cable to port 10 and do config using 192.168.1.254.

I set Vlan 2 for port 5-8. Set DHCP pool for Vlan 2. And then I set the IPv4 interface, just like in the video time 3:08 (https://youtu.be/Rw7tI1tAhMo?t=187). But after clicking apply, I lost access, eventhough I am connected to port 10.

Is my device faulty? I tried this 4 times already and I dunno what to do.

Please help. Thank you.

[Reza Sharifi]

I am not familiar with SG series switches but let's see if I can help.

And then I set the IPv4 interface, just like in the video time 3:08

What IP and mask did you assign to the interface?

HTH 

[ToTT]

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@Reza Sharifi wrote: 

What IP and mask did you assign to the interface?

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In the Pool, I set Vlan2 subnet IP 192.168.2.0, start from 192.168.2.100 to 192.168.2.254, so in the IPv4 interface, I set 192.168.2.100.

In the video, after she entered the interface for vlan 200 (3:18), suddenly both vlan 200 and 300 already entered. I must have missing a step here.

[ToTT]

Ok, I believe, I made a progress. When I let Vlan 1 to get DHCP from a router, it doesn't stop the access anymore when I set interface.

Maybe when I set the interface and when Vlan 1 accepts DHCP, everything was changed too...? Still learning and very confused. Now, I learned that it seems, it doesn't like when one VLAN accepts DHCP while another VLAN distributes DHCP. 

Thank you for trying to help.