Between Cisco Switches

Hello Guys,

I need a solution to implement my CR309 Routerboard between more Cisco switches (Cisco 9100 Serie)

I need to delegate 5 VLANs on a trunk port from a 9100 to a MIkrotik CR309, and then split the VLANs to different Ports.

On MIkrotik the Trunk uplink is the sfp-sfpplus8 (vlan 15,16,17,18,19) and the access ports for further cisco switches are sfp-sfpplus3(vlan15), sfp-sfpplus4(vlan16)…and so on

On the VLAN15 Network the MIkrotik has an ip 10.135.15.125/25

If I do a bridge with more ports inside, I can ping either the Trunk or the access side, I can not access all of them.
A kind of real (good) mikrotik configuration example would be very highly appriciated.
Thank you and stay healhty all of you
thank you
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