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New Member

Input Errors and Connectivity Issues

I am having some problems on my SAN, which is reporting problems with network connectivity.  I am attempting to determine whether the error is the switch, interface, controller, cables, etc.  One of the ports connected to this SAN reported input errors, but didn't seem very high relative to the number of packets input/output.  Additionally I took a look to see what type of input error was reported, and received the following information.  Any thoughts on whether or not I can rule out the switch/port from the equation?  I did take note that a few other ports on this switch had a few input errors, but they were much lower.  I didn't see this on any of the other members in the stack (4 3750G-24TS switches). 

CPSANSW#show int gi1/0/5

GigabitEthernet1/0/5 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 0024.98af.5d05 (bia 0024.98af.5d05)

  Description: SNUGHEAD 1 - 1

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

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

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

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

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

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

  Last input 00:00:07, output 00:00:00, output hang never

  Last clearing of "show interface" counters 1d22h

  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 391000 bits/sec, 158 packets/sec

  5 minute output rate 809000 bits/sec, 169 packets/sec

     337173636 packets input, 2435878889482 bytes, 0 no buffer

     Received 13455 broadcasts (5598 multicasts)

     0 runts, 0 giants, 0 throttles

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

     0 watchdog, 5598 multicast, 0 pause input

     0 input packets with dribble condition detected

     227014132 packets output, 144314891618 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

CPSANSW#

CPSANSW#show int gi1/0/5 counters errors

Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi1/0/5             0           0                  0               9                0            0

Port      Single-Col  Multi-Col   Late-Col  Excess-Col  Carri-Sen      Runts     Giants
Gi1/0/5            0          0                  0            0                       0                0          0
CPSANSW#

Everyone's tags (4)
5 REPLIES
New Member

Input Errors and Connectivity Issues

Hi,

ca you do a show controllers cpu interface?

DS

New Member

Input Errors and Connectivity Issues

Sure, what are we looking for here?

CPSANSW#show controllers cpu
ASIC    Rxbiterr   Rxunder    Fwdctfix   Txbuflos   Rxbufloc   Rxbufdrain
-------------------------------------------------------------------------
ASIC0     0          0          0          0          0          0
ASIC1     0          0          0          0          0          0
ASIC2     0          0          0          0          0          0
ASIC3     0          0          0          0          0          0
ASIC4     0          0          0          0          0          0
ASIC5     0          0          0          0          0          0
ASIC6     0          0          0          0          0          0

HOL Fix Counts
--------------
No Fixes:          0 Added:          0 In Use:          0 Both:          0

CPU Heartbeat Statistics

Tx Success Tx Fail    1st Thr    2nd Thr    Unthr      RetryCtMax
---------- ---------- ---------- ---------- ---------- ----------
283046246          0          0          0          0          1

Rx Delay
         0          1          2          3          4
---------- ---------- ---------- ---------- ----------
283046336          0          0          0          0

AddlDelay AdvanceCnt
---------- ----------
         0          0

Rx Retries by RetryCount
         0          1          2          3          4          5          6
---------- ---------- ---------- ---------- ---------- ---------- ----------
283046336          0          0          0          0          0          0

         7          8          9
---------- ---------- ----------
         0          0          0

AddlRetry
----------
         0


cpu-queue-frames  retrieved  dropped    invalid    hol-block  stray
----------------- ---------- ---------- ---------- ---------- ----------
rpc               374626061  0          0          0          0
stp               7074966    0          0          0          0
ipc               45656237   0          0          0          0
routing protocol  11217296   0          0          0          0
L2 protocol       1513099    0          0          0          0
remote console    0          0          0          0          0
sw forwarding     47         0          0          0          0
host              105286     0          0          0          0
broadcast         11352949   0          0          0          0
cbt-to-spt        0          0          0          0          0
igmp snooping     44         0          0          0          0
icmp              0          0          0          0          0
logging           0          0          0          0          0
rpf-fail          0          0          0          0          0
dstats            0          0          0          0          0
cpu heartbeat     283046346  0          0          0          0

cpu-queue         static inuse static added
----------------- ------------ ------------
rpc               0            0
stp               0            0
ipc               0            0
routing protocol  0            0
L2 protocol       0            0
remote console    0            0
sw forwarding     0            0
host              0            0
broadcast         0            0
cbt-to-spt        0            0
igmp snooping     0            0
icmp              0            0
logging           0            0
rpf-fail          0            0
dstats            0            0
cpu heartbeat     0            0

Supervisor ASIC receive-queue parameters
----------------------------------------
queue 0 maxrecevsize 7E0 pakhead 53209CC paktail 535C2AC
queue 1 maxrecevsize 7E0 pakhead 457BC1C paktail 457B880
queue 2 maxrecevsize 7E0 pakhead 4531CA0 paktail 4531904
queue 3 maxrecevsize 7E0 pakhead 5789288 paktail 47A5650
queue 4 maxrecevsize 7E0 pakhead 458179C paktail 54B5C6C
queue 5 maxrecevsize 7E0 pakhead 5767724 paktail 478B988
queue 6 maxrecevsize 7E0 pakhead 577CFA0 paktail 479A094
queue 7 maxrecevsize 7E0 pakhead 4722D60 paktail 4723BD0
queue 8 maxrecevsize 7E0 pakhead 5737548 paktail 57371AC
queue 9 maxrecevsize 7E0 pakhead 5679378 paktail 5679378
queue A maxrecevsize 7E0 pakhead 566FAA4 paktail 566F708
queue B maxrecevsize 7E0 pakhead 47B2070 paktail 57968C0
queue C maxrecevsize 7E0 pakhead 567E2BC paktail 464C7D0
queue D maxrecevsize 7E0 pakhead 46386C0 paktail 5678FDC
queue E maxrecevsize 0 pakhead 0 paktail 0
queue F maxrecevsize 7E0 pakhead 5667344 paktail 461AA94
Supervisor ASIC exception status
--------------------------------
Receive overrun    00000000   Transmit overrun 00000000
FrameSignatureErr  00000000   MicInitialize    00000000
BadFrameErr        00000000   LenExceededErr   00000000
BadJumboSegments   00000000

Supervisor ASIC Mic Registers
------------------------------
MicDirectPollInfo               80000200
MicIndicationsReceived          00000000
MicInterruptsReceived           00000000
MicPcsInfo                      0000011F
MicPlbMasterConfiguration       00000000
MicRxFifosAvailable             00000000
MicRxFifosReady                 0000BFFF
MicTimeOutPeriod:       FrameTOPeriod: 00000EA6 DirectTOPeriod: 00004000
MicTransmFramesCopied           00000003
MicTxFifosAvailable             0000007F
MicConfiguration:       Conf flag: 00000110     Interrupt Flag: 0000000A
MicReceiveFifoAssignmen Queue 0 - 7: 00000000   Queue 8 - 15:00000000
MicReceiveFramesReady:  FrameAvailable: 00000001        frameAvaiMask: 00000000
MicException:
        Exception_flag  00000000
        Message-1       00000000
        Message-2       00000000
        Message-3       00000000
MicIntRxFifo:
        ReadPtr         00000060        WritePtr        00000060
        WHeadPtr        00000060        TxFifoDepth     C0000800
MicIntTxFifo:
        ReadPtr         00000670        WritePtr        00000670
        WHeadPtr        00000670        TxFifoDepth     C0000800
MicDecodeInfo:
Fifo0:  address:        03FF4000 asic_num:      00000100
Fifo1:  address:        03FF4400 asic_num:      00000101
MicTransmitFifoInfo:
Fifo0:   StartPtrs:     066C9000        ReadPtr:        066C91B8
        WritePtrs:      066C91B8        Fifo_Flag:      8A800800
        Weights:        001E001E
Fifo1:   StartPtrs:     06427400        ReadPtr:        06427430
        WritePtrs:      06427430        Fifo_Flag:      89800400
        Weights:        000A000A
MicReceiveFifoInfo:
Fifo0:  StartPtr:       066DD000        ReadPtr:        066DD808
        WritePtrs:      066DD868        Fifo_Flag:      8B000FA0
        writeHeaderPtr: 066DD868
Fifo1:  StartPtr:       069DA800        ReadPtr:        069DA8B0
        WritePtrs:      069DA8B0        Fifo_Flag:      89800400
        writeHeaderPtr: 069DA8B0
Fifo2:  StartPtr:       06993000        ReadPtr:        06993180
        WritePtrs:      06993180        Fifo_Flag:      89800400
        writeHeaderPtr: 06993180
Fifo3:  StartPtr:       06BEF800        ReadPtr:        06BEF880
        WritePtrs:      06BEF880        Fifo_Flag:      89800400
        writeHeaderPtr: 06BEF880
Fifo4:  StartPtr:       06A22000        ReadPtr:        06A22058
        WritePtrs:      06A22058        Fifo_Flag:      89800400
        writeHeaderPtr: 06A22058
Fifo5:  StartPtr:       06B5EE00        ReadPtr:        06B5EE00
        WritePtrs:      06B5EE00        Fifo_Flag:      88800200
        writeHeaderPtr: 06B5EE00
Fifo6:  StartPtr:       06BA5C00        ReadPtr:        06BA5D78
        WritePtrs:      06BA5D78        Fifo_Flag:      89800400
        writeHeaderPtr: 06BA5D78
Fifo7:  StartPtr:       06ACE800        ReadPtr:        06ACEA60
        WritePtrs:      06ACEA60        Fifo_Flag:      89800400
        writeHeaderPtr: 06ACEA60
Fifo8:  StartPtr:       06B38E00        ReadPtr:        06B38FA8
        WritePtrs:      06B38FA8        Fifo_Flag:      88800200
        writeHeaderPtr: 06B38FA8
Fifo9:  StartPtr:       066DB4D8        ReadPtr:        066DB4D8
        WritePtrs:      066DB4D8        Fifo_Flag:      82800008
        writeHeaderPtr: 066DB4D8
Fifo10: StartPtr:       06A6B800        ReadPtr:        06A6B960
        WritePtrs:      06A6B960        Fifo_Flag:      88800200
        writeHeaderPtr: 06A6B960
Fifo11: StartPtr:       066C8F00        ReadPtr:        066C8F00
        WritePtrs:      066C8F00        Fifo_Flag:      86800080
        writeHeaderPtr: 066C8F00
Fifo12: StartPtr:       06A98800        ReadPtr:        06A98B00
        WritePtrs:      06A98800        Fifo_Flag:      89000100
        writeHeaderPtr: 06A98800
Fifo13: StartPtr:       06427880        ReadPtr:        06427880
        WritePtrs:      06427880        Fifo_Flag:      86800080
        writeHeaderPtr: 06427880
Fifo14: StartPtr:       00000000        ReadPtr:        00000000
        WritePtrs:      00000000        Fifo_Flag:      00800000
        writeHeaderPtr: 00000000
Fifo15: StartPtr:       06992F80        ReadPtr:        06992F98
        WritePtrs:      06992F98        Fifo_Flag:      84800020
        writeHeaderPtr: 06992F98


===========================================================
Complete Board Id:0x0002
===========================================================
CPSANSW#

Hall of Fame Super Gold

Input Errors and Connectivity Issues

337173636 packets input, 2435878889482 bytes, 0 no buffer

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

9 input errors?  Out of 337173636 input packets?  That's close-the-word NOTHING.

Try this command:  sh controll e Gi 1/0/5

New Member

Input Errors and Connectivity Issues

What is the difference between a controller and an interface?  Please see below for ouput... thanks for taking the time to take a look  

CPSANSW#show controller ethernet-controller gi1/0/5

     Transmit GigabitEthernet1/0/5            Receive
   1551818222 Bytes                       2228269923 Bytes
   1801803188 Unicast frames              1916754811 Unicast frames
        14629 Multicast frames                 29158 Multicast frames
       123335 Broadcast frames                 54545 Broadcast frames
            0 Too old frames              2222449939 Unicast bytes
            0 Deferred frames                2245344 Multicast bytes
            0 MTU exceeded frames            3490880 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             8983461 Minimum size frames
            0 8 collision frames           610023034 65 to 127 byte frames
            0 9 collision frames            67870535 128 to 255 byte frames
            0 10 collision frames           21226705 256 to 511 byte frames
            0 11 collision frames            4875810 512 to 1023 byte frames
            0 12 collision frames            6146022 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                16 Symbol error frames
            0 Late collisions                     16 Invalid frames, too large
            0 VLAN discard frames         1197712947 Valid frames, too large
            0 Excess defer frames                  0 Invalid frames, too small
     22486722 64 byte frames                       0 Valid frames, too small
    765407568 127 byte frames
     61243662 255 byte frames                      0 Too old frames
     16865613 511 byte frames                      0 Valid oversize frames
      6562957 1023 byte frames                     0 System FCS error frames
      3544911 1518 byte frames                     0 RxPortFifoFull drop frame
    925829719 Too large frames
            0 Good (1 coll) frames
            0 Good (>1 coll) frames

CPSANSW#

Hall of Fame Super Gold

Input Errors and Connectivity Issues

16 Symbols and Invalid Frames.

At that rate, I won't even worry.

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