MLAG and VPC

hello. I'm struggling to understand how to create redundant aggregated links between a pair of Extreme Switches and some Cisco 5k's.

Here is the physical topology in essence: https://imgur.com/a/YbkzP9T

The hosts are connecting to the EX switches via mlag ports.

From the EX (lets assume S3 and S4 in that diagram) which are connected to the upstream 5k switches (S1 and S2). Actually there is also an ISC between SW03 and SW04.

My plan was to create a VPC connection on the 5ks to the ex's, and LACP enabled MLAGs on the exs'.

In terms of the VPC, I create a port-channel between the

SW01

interface Port-channel 100 description VPC 100 switchport mode trunk switchport trunk allowed vlan 100,101 vpc 100 interface Port-channel 100 description VPC 101 switchport mode trunk switchport trunk allowed vlan 100,101 vpc 100 #connected to SW03 P13 interface ethernet 1/21 channel-group 100 channel-group 100 mode active #connected to SW04 P13 interface ethernet 1/22 channel-group 101 channel-group 101 mode active 

SW02

interface Port-channel 100 description VPC 100 switchport mode trunk switchport trunk allowed vlan 100,101 vpc 100 interface Port-channel 100 description VPC 101 switchport mode trunk switchport trunk allowed vlan 100,101 vpc 100 #connected to sw03 P14 interface ethernet 1/21 channel-group 100 channel-group 100 mode active #connected to sw04 P14 interface ethernet 1/22 channel-group 101 channel-group 101 mode active 

Is this correct?

From this article (https://extremeportal.force.com/ExtrArticleDetail?an=000082635), it seems you only need to enable one port on each EX switch as the mlag port and then enable lacp lag between the ports connected between the two upstream switches.

On the EX side,

SW03

enable sharing 13 grouping 13,14 address-based L3_L4 LACP enable mlag 13 peer sw04 id 101 

SW04

enable sharing 13 grouping 13,14 address-based L3_L4 LACP enable mlag 13 peer sw03 id 101