How i can connect those switches?

[gbs]

This network has one EAPS ring link between all the x450a and BD8810.

How can i connect those x430 to work with two uplinks like in the picture below?

Sorry for my bad picture 😛

[StephenW]

no. you need a core license. you could switch everything over to ERPSv2 with a sub ring.

[StephenW]

Make another eaps ring with shared ports. Below is a example with config's.

https://github.com/extremenetworks/Virtual_EXOS/tree/master/gns3_projects/Two_EAPS_rings