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
