This post is about cofiguring Trunk port between Meraki and Cisco Catalyst switch.
Similar “cross-vendor” trunk port configuation from another post:
Standard Trunk Port Configuration
Meraki side


Cisco Side
conf t
!
interface GigabitEthernet1/0/23
 description ****Uplink_Meraki_SW01_Port23****
 switchport trunk native vlan 4
 switchport trunk allowed vlan 1,2,3,4
 switchport mode trunk
!
end
wrLACP Etherchannel Configuration
Meraki Side



Cisco Side
conf t
!
default int gi1/0/23
default int gi1/0/24
!
interface GigabitEthernet1/0/23
 description **trunk_LACP**
 switchport trunk native vlan 4
 switchport trunk allowed vlan 1,2,3,4
 switchport mode trunk
 channel-group 64 mode active
!
interface GigabitEthernet1/0/24
 description **trunk_LACP**
 switchport trunk native vlan 4
 switchport trunk allowed vlan 1,2,3,4
 switchport mode trunk
 channel-group 64 mode active
!
interface Port-channel64
 description **trunk_LACP**
 switchport
 switchport trunk native vlan 4
 switchport trunk allowed vlan 1,2,3,4
 switchport mode trunk
!
end
wrUseful link
https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Switch_Ports
