cluster
  cluster-interface bridge 1
  unit 1
    mac-address cc:9d:a2:71:83:78
  exit
  unit 2
    mac-address cc:9d:a2:71:82:38
  exit
  enable
exit
 
hostname ESR-1 unit 1
hostname ESR-2 unit 2
 
security zone SYNC
exit
 
bridge 1
  vlan 1
  security-zone SYNC
  ip address 198.51.100.254/24 unit 1
  ip address 198.51.100.253/24 unit 2
  vrrp 1
    ip address 198.51.100.1/24
    priority 254 unit 1
    priority 253 unit 2 
    group 1
    enable
  exit
  enable
exit
 
interface gigabitethernet 1/0/1
  mode switchport
  spanning-tree disable
exit
interface gigabitethernet 2/0/1
  mode switchport
  spanning-tree disable
exit
 
security zone-pair SYNC self
  rule 1
    action permit
    match protocol icmp
    enable
  exit
exit

Чтобы system prompt корректно работал, необходимо обновить пользовательскую сессию.