set qos policy limiter 1G-in class 100 bandwidth '20gbit'
set qos policy limiter 1G-in class 100 burst '3760k'
set qos policy limiter 1G-in class 100 match INTERNAL mark '100'
set qos policy limiter 1G-in class 100 priority '20'
set qos policy limiter 1G-in default bandwidth '1gbit'
set qos policy limiter 1G-in default burst '125000000b'
set qos interface eth0 ingress 1G-in

vyos@vyos# tc filter show dev eth0 ingress
filter parent ffff: protocol all pref 255 basic chain 0 
filter parent ffff: protocol all pref 255 basic chain 0 handle 0x1 flowid ffff:65 
        action order 1:  police 0x1 rate 1Gbit burst 125000000b mtu 2Kb action drop overhead 0b 
        ref 1 bind 1