firewall {
            family ethernet-switching {
                filter tv-cos-in {
                    term 1 {
                        from {
                             user-vlan-id [ 3100-3139 990-999 ];
                        }
                        then {
                            forwarding-class tv;
                            loss-priority low;
                        }
                    }
                    term 2 {
                        then accept;
                    }
                }
            }
        }