Link Aggregation Error

[Azar]

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.

[RWelch]

You might already be aware?
Link Aggregation is supported on ports sharing similar characteristics such as link speed and media-type (SFP/Copper). 
Link Aggregation and Load Balancing 

[RWelch]

One additional consideration regarding the MS425s if you aren't already aware (however this is not related to the LACP issue):

Dashboard > Switching > Configure > Switch Settings under MTU configuration

Note: The maximum MTU on MS425 is 9416 bytes. Meraki Dashboard already includes 22 Bytes for Ethernet Headers and Frame Check Sequence (FCS). Therefore, use MTU value 9394 when configuring from the Dashboard.

MS425 Overview and Specifications