02-26-2013 01:02 PM - edited 03-07-2019 11:57 AM
Guys
Good afternoon
I would like to know if somebody can help me solving this problem.
Deal about a datacenter network where there is a switch 6509. In this switch at G2/41 interface is connected a server. My problem is the increase of input drops in this interface. No errors, no high utilization only input drops. I would appreciate for the help. thanks
GigabitEthernet2/41 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 001f.6c91.d2b8 (bia 001f.6c91.d2b8)
Description: W2K3TELHYP03_DADOS
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseT
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:38, output hang never
Last clearing of "show interface" counters 00:36:23
Input queue: 0/2000/5448/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 98000 bits/sec, 97 packets/sec
207 packets input, 28756 bytes, 0 no buffer
Received 30 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
634821 packets output, 87498322 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
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
02-26-2013 02:22 PM
Hi,
Have a look at this doc for tips on troubleshooting input queue drops.
http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080094791.shtml#topic2
HTH
02-27-2013 05:48 AM
Thank you Reza. I have already read this doc, but it didn´t help me so much. Actually this doc make me understand cause the drops occurs, but didn´t help me how solve them.
02-26-2013 03:27 PM
What is the line card is Slot 2?
02-27-2013 05:51 AM
leolaohoo
Follow the card below
2 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL1209HJAX
02-27-2013 02:12 AM
post output for command "show show queueing interface GigabitEthernet2/41"
02-27-2013 05:42 AM
Follow below all log´s about this interface. I have cleared the counters, however the input and output drops don´t stop.
SWCI6509GAUDI01#sh int gigabitEthernet2/41
GigabitEthernet2/41 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 001f.6c91.d2b8 (bia 001f.6c91.d2b8)
Description: W2K3TELHYP03_DADOS
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseT
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:37, output hang never
Last clearing of "show interface" counters 17:20:50
Input queue: 0/2000/769/0 (size/max/drops/flushes); Total output drops: 11328956
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 632000 bits/sec, 516 packets/sec
43235 packets input, 7599524 bytes, 0 no buffer
Received 880 broadcasts (0 multicasts)
39 runts, 0 giants, 0 throttles
769 input errors, 74 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
85054279 packets output, 12959110952 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
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
SWCI6509GAUDI01#show queueing interface GigabitEthernet2/41
Interface GigabitEthernet2/41 queueing strategy: Weighted Round-Robin
QoS is disabled globally
Port is untrusted
Extend trust state: not trusted [COS = 0]
Default COS is 0
Queueing Mode In Tx direction: mode-cos
Transmit queues [type = 1p3q8t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
01 WRR 08
02 WRR 08
03 WRR 08
04 Priority 01
WRR bandwidth ratios: 100[queue 1] 0[queue 2] 0[queue 3]
queue-limit ratios: 100[queue 1] 0[queue 2] 0[queue 3] 0[Pri Queue]
queue tail-drop-thresholds
--------------------------
1 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
3 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
queue random-detect-min-thresholds
----------------------------------
1 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
3 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
queue random-detect-max-thresholds
----------------------------------
1 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
3 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
WRED disabled queues: 1 2 3
queue thresh cos-map
---------------------------------------
1 1 0 1 2 3 4 5 6 7
1 2
1 3
1 4
1 5
1 6
1 7
1 8
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
4 1
Queueing Mode In Rx direction: mode-cos
Receive queues [type = 1q8t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
01 WRR 08
WRR bandwidth ratios: 100[queue 1]
queue-limit ratios: 100[queue 1]
queue tail-drop-thresholds
--------------------------
1 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
queue thresh cos-map
---------------------------------------
1 1 0 1 2 3 4 5 6 7
1 2
1 3
1 4
1 5
1 6
1 7
1 8
Packets dropped on Transmit:
BPDU packets: 0
queue dropped [cos-map]
---------------------------------------------
1 11328956 [0 1 2 3 4 5 6 7 ]
2 0 []
3 0 []
4 0 []
Packets dropped on Receive:
BPDU packets: 0
queue dropped [cos-map]
---------------------------------------------
1 0 [0 1 2 3 4 5 6 7 ]
SWCI6509GAUDI01#
02-27-2013 01:36 PM
769 input errors, 74 CRC,
This looks like a faulty NIC downstream.
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