How to dual uplink a single x440 G2 to two x670s G2's in MLAG with ISC Link

[Rory_Schmitz]

Hello,

Fairly new to Extreme and coming over from Cisco so I'm hoping I have the terminologies correct. I have one x440 G2 that I want to uplink two ports from, to a pair of x670's in a MLAG with ISC Link between them. The 670's are already in production. I guess the end goal is to have both ports on the 440 active so in the event one of the 670's fails, we'll won't have downtime on the 440.

How exactly would I configure each side? Do I just need a LACP sharing group on the 440 or VRRP on the 670s, etc? I'm also trying not to put a loop in the network accidentally.

The 440 G2 is running: ExtremeXOS version 21.1.1.4 21.1.1.4-patch1-5
The 670 G2's are running: ExtremeXOS version 15.6.3.1 v1563b1-patch1-9

Thanks in advance for any information you can provide.

[Jeremy_Gibbs]

Say port 2 will be the uplink on each
First switch
enable mlag port 2 peer "R4-SW2" id 2
Second switch
enable mlag port 2 peer "R4-SW1" id 2

First and second mlag switch
enable sharing 2 grouping 2 algorithm address-based L2 lacp

Enable sharing on the 2 ports on the 440s.