Hello All, We have two MS 425 - 16 Core Switches and One MS 225 - 48 Access Switch. Both Core Switches are Stacked together. Our requirement is port need to be aggregated for redundancy. I will explain about how switches are connected each other in below : Core SW-01/7 connected to Access SW-01/52 through 10Gbps SFP Core SW-02/7 connected to Access SW-01/48 through SFP Module Meraki - 1000BASE-T: 1.3 Gbps ( Part 600-22100 ) What we are done here, We aggregated the Port 48 & 52 in Access SW-01. In Access SW-01 Port 48 showing a message with Port running LACP and LACP has disabled this port. I think aggregating the SFP/Copper port & different speed is not good practice. And one more thing RSTP has been enabled on all ports. Does RSTP and LACP work together. Instead of this suggest a best practice for this network.
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