[j-nsp] Policed discards

[Samit]

Hi, I just installed my first juniper M7i in the production couple of
hour back and after resolving few routing issue so far it is running
smoothly. I noticed that my PE-1GE-SX-B interface is showing only
"Policed discards", the counter which increases by 1 in every 1-2 secs
but the inbuilt GE is showing no errors. As I am not running any
qos/policing in the interface I was wondering what does it means..and
how to fix this error?  the router's both interface is connected with a
Cisco 3400ME in different Vlan.

interfaces {
    ge-0/0/0 {
        description " Cisco3400-ME Gi0/1 Vlan2";
        unit 0 {
            family inet {
                address 192.168.0.1/28;
            }
        }
    }

                                                          Delay: 1/0/1
Interface: ge-0/0/0, Enabled, Link is Up
Encapsulation: Ethernet, Speed: 1000mbps
Traffic statistics:                                           Current delta
  Input bytes:                3589144576 (34951312 bps)          [26149611]
  Output bytes:               4117970233 (36219936 bps)          [27659648]
  Input packets:                12654493 (15073 pps)                [90668]
  Output packets:               13058310 (15834 pps)                [94510]
Error statistics:
  Input errors:                        0                                [0]
  Input drops:                         0                                [0]
  Input framing errors:                0                                [0]
  Policed discards:                  558                                [4]
  L3 incompletes:                      0                                [0]
  L2 channel errors:                   0                                [0]
  L2 mismatch timeouts:                0                                [0]
  Carrier transitions:                 0  Output errors:                [0]



Regards,
Samit