vSRX:

ge-0/0/0 {
    description "to vMX";
    unit 0 {
        family inet {
            address 10.100.80.2/30;
        }
    }
}
ge-0/0/1 {
    description "Downstream to vQFX";
    unit 0 {
        family ethernet-switching {
            interface-mode trunk;
            vlan {
                members all;
            }
        }
    }
}
ge-0/0/2 {
    description "Internet";
    unit 0 {
        family inet {
            address 180.200.5.2/30;
        }
    }
}
fxp0 {
    unit 0 {
        family inet {
            address 192.168.1.82/24;
        }
    }
}
irb {
    unit 81 {
        family inet {
            address 192.81.1.1/24;
        }
    }
    unit 82 {
        family inet {
            address 192.81.2.1/24;
        }
    }
}
lo0 {
    unit 0 {
        family inet {
            address 10.5.80.3/32;
        }
    }
}

Security Policies:

policies {
    from-zone trust to-zone trust {
        policy intra-zone-communication {
            match {
                source-address any;
                destination-address any;
                application any;
            }
            then {
                permit;
            }
        }
    }
}
zones {
    security-zone untrust {
        host-inbound-traffic {
            system-services {
                ping;
                traceroute;
            }
        }
        interfaces {
            ge-0/0/2.0;
        }
    }
    security-zone trust {
        host-inbound-traffic {
            system-services {
                all;
            }
            protocols {
                all;
            }
        }
        interfaces {
            ge-0/0/0.0;
            lo0.0;
            irb.81;
            irb.82;
        }
    }
}

vQFX:

xe-0/0/0 {
    description "Upstream to vSRX";
    unit 0 {
        family ethernet-switching {
            interface-mode trunk;
            vlan {
                members all;
            }
        }
    }
}
xe-0/0/1 {
    description "Downstream to Tiny Core Host";
    unit 0 {
        family ethernet-switching {
            interface-mode access;
            vlan {
                members End-User-Devices;
            }
        }
    }
}
em0 {
    unit 0 {
        family inet {
            address 192.168.1.83/24;
        }
    }
}
em1 {
    unit 0 {
        family inet {
            address 169.254.0.2/24;
        }
    }
}