Putting a non-existent interface as part of a VRRP Group doesn’t trigger an error message. VRRP just fails to load.
admin@route3:~$ show interfaces ethernet eth0
Invalid interface [eth0]
admin@route3:~$ conf
[edit]
admin@route3# delete high-availability vrrp group LAN interface
[edit]
admin@route3# set high-availability vrrp group LAN interface eth0
[edit]
admin@route3# commit
[ high-availability vrrp ]
Reloading the VRRP process
[edit]
admin@route3# run show vrrp
VRRP is not running
[edit]
admin@route3# delete high-availability vrrp group LAN interface
[edit]
admin@route3# set high-availability vrrp group LAN interface eth1
[edit]
admin@route3# commit
[ high-availability vrrp ]
Starting the VRRP process
[edit]
admin@route3# run show vrrp
Name Interface VRID State Last Transition
--------- ----------- ------ ------- -----------------
FOREMAN eth1.22 22 BACKUP 7s
LAN eth1 1 BACKUP 7s
ROUTING eth1.254 254 BACKUP 7s
UNMANAGED eth1.21 21 BACKUP 7s
VLAN3 eth1.3 3 BACKUP 7s
VLAN20 eth1.20 20 BACKUP 7s
VLAN254v6 eth1.254 255 BACKUP 7s
WLAN eth1.9 9 BACKUP 7s
[edit]