interfaces {
    ge-0/0/0 {
        unit 0 {
            family inet {
                filter {
                    input qos;
                    output qos;
                }
                address 10.1.1.1/24;
            }

                                        
        }
    }
}

firewall {
    policer host-policer {
        filter-specific;
        if-exceeding {
            bandwidth-limit 256k;
            burst-size-limit 150k;
        }
        then discard;
    }
    filter qos {
        term qos {
            from {
                source-address {
                                        
                    10.1.1.2/32;
                }
            }
            then policer host-policer;
        }
        term accept-all {
            then accept;
	    }
	}
}