what is causes output queue drops:
ATM5/0.350: VCD: 103, VPI: 6, VCI: 350
VBR-NRT, PeakRate: 149000 (351416 cps), Average Rate: 120000 (283019 cps)
Burst Cells: 1
AAL5-LLC/SNAP, etype:0x0, Flags: 0x20, VCmode: 0x0
OAM frequency: 0 second(s), OAM retry frequency: 0 second(s)
OAM up retry count: 0, OAM down retry count: 0
OAM Loopback status: OAM Disabled
OAM Managed VC Status: Not Managed
ILMI Managed VC status: Not Managed
VC TxRingLimit: 4608 particles
VC Rx Limit: 800 particles
InARP frequency: 15 minute(s)
Transmit priority 4
InPkts: 13275, OutPkts: 2135936, InBytes: 1491713, OutBytes: 1209650930
InCells: 38340, OutCells: 26210241
InPRoc: 10866, OutPRoc: 459
InFast: 2409, OutFast: 2135477, InAS: 0, OutAS: 0
InPktDrops: 0, OutPktDrops: 678/0/678 (holdq/outputq/total)
InCellDrops: 0, OutCellDrops: 0
InByteDrops: 0, OutByteDrops: 0
CrcErrors: 0, SarTimeOuts: 0, OverSizedSDUs: 0, LengthViolation: 0, CPIErrors: 0
Out CLP=1 Pkts: 0, Cells: 0
OAM cells received: 0
F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 0, F5 InRDI: 0
F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0
OAM cells sent: 0
F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutRDI: 0
F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0
OAM cell drops: 0
Status: UP
Packets are being switched on a NPE-G1 from a gig to ATM interface at a very low rate (10 Mbps)