SG300 trunk issue

I have 2 SG300 switches in my network. Both have configured IP address on vlan 1, which is Lthe sole vlan on both switches. Current topology is SG300-10 | | SG300-28(F1) SG300-28(F2) | | HOST1 HOST2

Host 1 and 2 can ping both switches and the switches can ping their respective hosts. But HOST1 and HOST2 cannot.ping each other.

Configuration on both SG300-28

int range gi1-25 Switchport mode access Switchport access vlan 1

Int range gi25-28 Switchport mode trunk Switchport trunk native vlan 1

Int range gi1-24 Mdix auto (SG300 1F) Mdix on (SG300 2F)