RouterOS high availability

Pick the mechanism by what must survive: a router (VRRP), a cable or port (bonding), a switch (MLAG), an uplink (failover routes), or you want to use several uplinks at once (load balancing). Test every design by unplugging things.

VRRP: shared gateway address

# router 1 (higher priority becomes master)
/ip/address/add address=192.168.1.2/24 interface=ether1
/interface/vrrp/add name=vrrp1 interface=ether1 vrid=1 priority=200
/ip/address/add address=192.168.1.1/32 interface=vrrp1
# router 2
/ip/address/add address=192.168.1.3/24 interface=ether1
/interface/vrrp/add name=vrrp1 interface=ether1 vrid=1 priority=100
/ip/address/add address=192.168.1.1/32 interface=vrrp1