Interface Monitor - SRX HA Cluster

Hello Experts,

I am looking for advice regarding setting up interface monitoring in a HA cluster with multiple sub-interfaces.

reth1                   up    up
reth1.1                 up    up   inet     10.10.11.1/24   
reth1.2                 up    up   inet     10.10.12.1/24   
reth1.3                 up    up   inet     10.10.13.1/24   
reth1.4                 up    up   inet     10.10.14.1/24   


user@FW> show configuration chassis cluster redundancy-group 1 
node 0 priority 254;
preempt;
interface-monitor {
    reth1 weight 255;
}

The interface-monitor just says reth1. Does it mean that even if reth1.1 or 1.4 goes down, then that traffic will be moved over to the standby FW?