Input errors on many Interface (cisco WS-C3750G-12S)

[dc-csa-blr]

  Hi Experts,

We are facing since one month in our two Cisco WS-C3750G-12S on many interfaces input errors when data transer or ping (ICMP) increase input erros.

Not only port 1 but many interface has same issue, i have change new IOS but still same issue, once i have erase startup config but same issue we are facing and finaly i have replace same new switch with the same IOS it's working fine.(c3750-ipservicesk9-mz.122-55.SE4.bin)

So we want to know what is the issue in this switch and how to get the resolve of this issue.

switch#sh int gi1/0/1

GigabitEthernet1/0/1 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 0012.00cf.fb81 (bia 0012.00cf.fb81)

  MTU 9000 bytes, BW 1000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output 00:00:00, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 358000 bits/sec, 127 packets/sec

  5 minute output rate 179000 bits/sec, 35 packets/sec

     128718 packets input, 39768670 bytes, 0 no buffer

     Received 94029 broadcasts (0 multicast)

     0 runts, 0 giants, 0 throttles

     244 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 91094 multicast, 0 pause input

     0 input packets with dribble condition detected

     35567 packets output, 12122829 bytes, 0 underruns

     0 output errors, 0 collisions, 1 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.

Thanks in ADV,

[Leo Laohoo · Accepted solution]

Can you post the output to the command "sh controll e "?

[dc-csa-blr]

Hi Leo,

switch#sh controllers gigabitEthernet 1/0/1 ?
  utilization  Port Bandwidth Utilization

switch#sh controllers gigabitEthernet 1/0/1 utilization

Receive Bandwidth Percentage Utilization   : 0

Transmit Bandwidth Percentage Utilization  : 0 switch#sh controllers gigabitEthernet 1/0/1 utilization
Receive Bandwidth Percentage Utilization   : 0
Transmit Bandwidth Percentage Utilization  : 0

[Leo Laohoo · Accepted solution]

That's the wrong output.

Try this:  sh controll e Gi 1/0/1

[dc-csa-blr]

Hi Leo,

switch#sh controll e Gi 1/0/1

     Transmit GigabitEthernet1/0/1            Receive
       320138 Bytes                          4605762 Bytes
         2497 Unicast frames                    2489 Unicast frames
          196 Multicast frames                 25248 Multicast frames
            6 Broadcast frames                  1026 Broadcast frames
            0 Too old frames                  293378 Unicast bytes
            0 Deferred frames                4232200 Multicast bytes
            0 MTU exceeded frames              77160 Broadcast bytes
            0 1 collision frames                   0 Alignment errors
            0 2 collision frames                   0 FCS errors
            0 3 collision frames                   0 Oversize frames
            0 4 collision frames                   0 Undersize frames
            0 5 collision frames                   0 Collision fragments
            0 6 collision frames
            0 7 collision frames                 741 Minimum size frames
            0 8 collision frames                3059 65 to 127 byte frames
            0 9 collision frames               24779 128 to 255 byte frames
            0 10 collision frames                 33 256 to 511 byte frames
            0 11 collision frames                100 512 to 1023 byte frames
            0 12 collision frames                 72 1024 to 1518 byte frames
            0 13 collision frames                  0 Overrun frames
            0 14 collision frames                  0 Pause frames
            0 15 collision frames
            0 Excessive collisions                33 Symbol error frames
            0 Late collisions                      0 Invalid frames, too large
            0 VLAN discard frames                  0 Valid frames, too large
            0 Excess defer frames                 12 Invalid frames, too small
          157 64 byte frames                       0 Valid frames, too small
         2510 127 byte frames
            0 255 byte frames                      0 Too old frames
           32 511 byte frames                      0 Valid oversize frames
            0 1023 byte frames                     0 System FCS error frames
            0 1518 byte frames                     0 RxPortFifoFull drop frame
            0 Too large frames
            0 Good (1 coll) frames
            0 Good (>1 coll) frames

switch#

[Leo Laohoo · Accepted solution]

This errors you are seeing, is happening to ALL THE PORTS of the switch?

[dc-csa-blr]

Hi Leo,

This erros in 6 ports out of 12 (int port 1,2,5,6,9,10)

[Leo Laohoo]

 (int port 1,2,5,6,9,10)

There's a pattern.

Test this:  Move whatever is on ports 1 & 2 to ports 3 & 4.

If, you DO NOT see any line errors, then you have a possible hardware fault. 

[dc-csa-blr]

Hi Leo,

I already tested  line from port 1 and 2 to port 3 & 4 then it's working fine on port 3 and 4.

So it is hardware issue ?? any chance to resolve of this issue ?

[Leo Laohoo · Accepted solution]

Unless someone is going to prove me wrong, I believe ASIC 0 is faulty.

Nothing can be done to fix this issue other than an RMA.

[InayathUlla Sharieff · Accepted solution]

Hi,

The 3750 is 52Mbit nonblocking for a standalone switch.  The ASIC seems to be

grouped in fours, so I assume each ASIC has 4Mbit of bandwith for 1:1.

If you would like to check asics you could be using for example:

#sh platf pm if-numbers

interface gid  gpn  lpn  port slot unit slun port-type lpn-idb gpn-idb

----------------------------------------------------------------------------

-----

Gi1/0/1   1    1    1    6/3  1    1    1    remote    No      Yes

=> the "port" contains the ASIC number 6/3 , ASIC 6. You can issue this

command then:

===================

#sh platform port-asic stats misc asic 6

Port-asic Misc Statistics

=====================================

    TxBufferFullDropCount               0

    TxBufferFrameDescBadCrc16DropCount  0

    TxBufferBandwidthDropCount          0

    TxQueueBandwidthDropCount           0

    TxQueueMissedDropStatistics         0

    SneakQueueDropCount                 0

    RxBufferDropDestIndexCount          270894

    LearningQueueOverflowFrames         0

    LearningCamSkipCount                0

    ReceivePortFifoFullDropStats[0 ]: 0

    ReceivePortFifoFullDropStats[1 ]: 0

    ReceivePortFifoFullDropStats[2 ]: 0

    ReceivePortFifoFullDropStats[3 ]: 0

But there is nothing as such command which will show you the ASIC is faulty. WE can run some more internal commands to see if the asic is facing any issue ...but this will be only when you open the TAC case.

HTH

Regards

Inayath.

[dc-csa-blr]

Hi Inayath.

switch#sh platf pm if-numbers

interface gid  gpn  lpn  port slot unit slun port-type lpn-idb gpn-idb
----------------------------------------------------------------------
Gi1/0/1   1    1    1    2/2  1    1    1    local     Yes     Yes
Gi1/0/2   2    2    2    2/3  1    2    2    local     Yes     Yes
Gi1/0/3   3    3    3    2/0  1    3    3    local     Yes     Yes
Gi1/0/4   4    4    4    2/1  1    4    4    local     Yes     Yes
Gi1/0/5   5    5    5    0/2  1    5    5    local     Yes     Yes
Gi1/0/6   6    6    6    0/3  1    6    6    local     Yes     Yes
Gi1/0/7   7    7    7    0/0  1    7    7    local     Yes     Yes
Gi1/0/8   8    8    8    0/1  1    8    8    local     Yes     Yes
Gi1/0/9   9    9    9    1/2  1    9    9    local     Yes     Yes
Gi1/0/10  10   10   10   1/3  1    10   10   local     Yes     Yes
Gi1/0/11  11   11   11   1/0  1    11   11   local     Yes     Yes
Gi1/0/12  12   12   12   1/1  1    12   12   local     Yes     Yes
St1       872  872  0    16/0  1    0    0    internal  Yes     Yes

switch#sh platform port-asic stats misc asic 2

Port-asic Misc Statistics
=====================================
    TxBufferFullDropCount               0
    TxBufferFrameDescBadCrc16DropCount  0
    TxBufferBandwidthDropCount          0
    TxQueueBandwidthDropCount           0
    TxQueueMissedDropStatistics         0
    SneakQueueDropCount                 0
    RxBufferDropDestIndexCount          0
    LearningQueueOverflowFrames         0
    LearningCamSkipCount                0
    ReceivePortFifoFullDropStats[0 ]: 0
    ReceivePortFifoFullDropStats[1 ]: 0
    ReceivePortFifoFullDropStats[2 ]: 0
    ReceivePortFifoFullDropStats[3 ]: 0
switch#
switch#