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hsticher
Beginner

Extremely high Drop count and buffer misses at C6800IA interface ports

Is there any possibility  to reduce these tremendous drops?

Short network diagram:

LAN----C6880-X----FEX101----Client      >>> High drop rate at all Gi-Interfaces

LAN----C4506---Client  >>> No Drops

 

FEX-101#sh ver
Cisco IOS Software, C6800IA Software (C6800IA-UNIVERSALK9-M), Version 15.2(3a)E, RELEASE SOFTWARE (fc5)

 

FEX-101#sh int gi2/0/32
GigabitEthernet2/0/32 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is 8480.2d28.9320 (bia 8480.2d28.9320)
  MTU 9216 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 4d01h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 72513
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 0 bits/sec, 0 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec
     1755463 packets input, 118899318 bytes, 0 no buffer
     Received 1363 broadcasts (566 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 566 multicast, 0 pause input
     0 input packets with dribble condition detected
     6739923 packets output, 9237933002 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

FEX-101#sh buffer

Interface buffer pools:

RxQ15 buffers, 2176 bytes (total 4, permanent 4):
     0 in free list (0 min, 4 max allowed)
     17075930 hits, 17075926 misses

FEX-101#show controllers ethernet-controller port-asic statistics
===========================================================================
 Switch 3, PortASIC 0 Statistics
---------------------------------------------------------------------------

         0 TxBufferFull Drop Count
         0 TxBufferFrameDesc BadCrc16
         0 TxBuffer Bandwidth Drop Cou
         0 TxQueue Bandwidth Drop Coun
         0 TxQueue Missed Drop Statist
         0 RxBuffer Drop DestIndex Cou
         0 SneakQueue Drop Count
         0 Learning Queue Overflow Fra
         0 TxBufferFrameDesc BadCrc16            0 Rx NP Packet Count0
         0 RxBuffer Drop DestIndex Cou   167242730 Rx NP Packet Count1

         0 Sup Queue 0 Drop Frames               0 Sup Queue 8 Drop Frames
         0 Sup Queue 1 Drop Frames               0 Sup Queue 9 Drop Frames
         0 Sup Queue 2 Drop Frames               0 Sup Queue 10 Drop Frames
         0 Sup Queue 3 Drop Frames               0 Sup Queue 11 Drop Frames
         0 Sup Queue 4 Drop Frames           91781 Sup Queue 12 Drop Frames
         0 Sup Queue 5 Drop Frames               0 Sup Queue 13 Drop Frames
         0 Sup Queue 6 Drop Frames               0 Sup Queue 14 Drop Frames
         0 Sup Queue 7 Drop Frames               0 Sup Queue 15 Drop Frames

 

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