Macro 32 Ramblings

forwarding-options {
    port-mirroring {
        family inet {
            input {
                rate 1;
                run-length 1;
            }
            output {
                interface ;
                no-filter-check;
            }
        }
    }
}

interfaces {
    t1-1/0/3:3 {
        description Customer-A;
        unit 0 {
            family inet {
                filter {
                    output FILTER-PORT_MIRROR-ALL;
                    input  FILTER-PORT_MIRROR-ALL;
                }
        }
    }
}
firewall {
    family inet {
        filter FILTER-PORT_MIRROR-ALL {
            term MIRROR-ALL {
                then {
                    port-mirror;
                    accept;
            }
        }
    }
}

OR------------------
Configuring Port Mirroring for Local Traffic Analysis

To mirror interface traffic or VLAN traffic on the switch to an interface on 
the switch:

   1. Choose a name for the port mirroring configuration—in this case, 
      employee-monitor, and specify the input—in this case, packets entering 
      ge-0/0/0 and ge-0/0/1:
      [edit ethernet-switching-options]
      user@switch# set analyzer employee-monitor input ingress interface ge–0/0/0.0
      user@switch# set analyzer employee-monitor input ingress interface ge–0/0/1.0
   2. Optionally, you can specify a statistical sampling of the packets by setting a ratio:
      [edit ethernet-switching-options]
      user@switch# set analyzer employee-monitor ratio 200

      When the ratio is set to 200, 1 of every 200 packets is mirrored to the analyzer. 
You can use statistical sampling to reduce the volume of mirrored traffic, as a high volume of 
mirrored traffic can be performance intensive for the switch.
   3. Configure the destination interface for the mirrored packets:
      [edit ethernet-switching-options]
      user@switch# set analyzer employee-monitor output interface ge-0/0/10.0
   4. commit