Juniper ESI-LAG

Goal

In this tutorial we are going to to setup ESI-LAG (Ethernet Switch Identifier - Link Aggregation Group). According to Juniper: "ESI link aggregation groups (ESI-LAGs) enable one or more client devices to form a logical link aggregation group (LAG) interface with the peers".

Prerequisites

For this tutorial I will be using :

- EVE-NG 2.0.3-112

- VQFX model: vqfx-10000 running JUNOS 19.4R1.10 for spines and leaves

- Debian VM's servers

Diagram

Setup and configuration

network info

Devices	Role	lo.0 IP	ae0 IP	mgmt	AS
cc1	core swtich1	10.179.1.1/32	172.16.3.1/30	10.193.0.105/24	64701
cc2	core switch2	10.179.1.2/32	172.16.3.2/30	10.193.0.106/24	64701
sw1	switch 1	10.179.1.4/32		10.193.0.108/24
sw2	switch 2	10.179.1.3/32		10.193.0.107/24

core switch 1 configuration

set system login user homer uid 2002
set system login user homer class super-user
set system login user homer authentication ssh-rsa "ssh-rsa 
AAAAB3NzaC1yc2EAAAADAQABAAABAQC4xpjWJoQhCf176i77ni9//mcYO3bBWu7necWZwJNVkFsvvT6XuWfkKVMUFnTjTMr1erv8WRDze7le9Jl2a/xMIgo9Cf71SU9faPbd/ukvaLl5VUeGvHKFg9d+7GUGx1z9K1qKY2VOBO5EQCht8+4o4mMaizoXoxHvkNolswAa5Jv 
/EPwnfCeDyV7TsG+Se1k7/1h1VFOwW7Dbxno1aCnMDYbcfiBnzGnLSZQGjehok6cqYTjsNIIdAiZYSpH77pnAGglFhxNUSlqj0qRIJZdG3nhPlvIRPjn7fouq3BJEmiWPP8ru67H1J2mdSkix4xOxdUWfGB9eJlENfnobJjBr papaul@U18"
set system login user ppaul uid 2003
set system login user ppaul class super-user
set system login user ppaul authentication ssh-rsa "ssh-rsa 

AAAAB3NzaC1yc2EAAAADAQABAAABAQDST4EbXJc9l/AdrVmOZEPl3sxi6qjGIZyPwkupthSdooFHxPxUIh/a5PC9bMk5go6KvRoChpc4L8XuMRsxLTd6Ro6DsWIZieGHFuO/AL9SRUtmevGiSC2q4ibR7ACosJBUvKPRVK8anYnMSL9YWd7lnmVLnW5mvOM3Alhd8aTNKE3/H9ogDt9UfndEJXmieMTLJzGvx65sw6riqa5hh6iOcw02qb3QQCKLSRJmUJQuToY4oo/ZdLl/prEDKQ0I9DSnOxRYIvZxvUsTzwoXVq9X9dWGkKAAMDw7f2DJfa/4uCNT2dKPydApeN0ea2/69VRL3fmTz47y0CC1RTEd8j1j U18pc "