I have setup DHCP server on the PC which connected to SG220-50 Hub and two DHCP/BOOTP client also connected to SG220-50. The client send DHCP / BOOTP request packet continuously but the DHCP server never got the DHCP / BOOTP request. I changed SG220-50 to another dummy hub, now the client get ip address from DHCP server.
I believe there's some settings in SG220-50 let relay DHCP/BOOTP packets to the DHCP server. How could I configure that?