MC-LAG on vQFX (EVE-NG)

Hi all,

today I’m gonna show you how to implement MC-LAG on the vQFX (QFX10k codebase) on EVE-NG. I personally found this pretty straight forward to configure but since I recieved so many Mails asking me to show this, I will do.

Here’s the very simple Topology (click to enlarge):

And here’s the Code – as you can see it’s not that hard but you have to remember some things:

When configuring MC-LAG always remember that the following settings must match on both Members of the MC-LAG:

LACP System-ID + Key
MC-AE ID + Mode
VLAN’s (ICL and Member VLAN’s)

 

The following settings must be unique for each Member of the MC-LAG:

MC-AE Chassis-ID + Status Control
ICCP IP (Local) and Peer IP (who would have guessed this…)
MC-LAG Protection 

 

I will give you more explanation on this Topic later because as you might have heard my JNCIE-DC is booked for the 14th of February (therefore not so much time to write detailed Blogposts) and time is slowly running away… Okay just kidding – time just took a SPRINT towards my deadline… However, my beard looks fine so far…

Update 15.02.2019:
It can happen, that your vQFX-Devices all have the same MAC! Therefore (as a workaround) you can set the irb-mac static on one of the MC-LAG “Core” Devices:

set interfaces irb unit 500 mac 00:00:00:00:00:05

This way your MC-LAG will come up as expected 😉

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