My issue is on a 68070-xl in

malshara · ‎07-11-2015

Hi ,

I have a router 7200 ,I can see on a specific interface packet stuck in the input queue 55/75/6/0 even this interface is not used and there is no traffic passing through ,I found some failures in the buffers ,any suggestions guys ,any aware if there is a known SW bug related ?

Regards

Madhukrishnan Gopinathan Nair · ‎07-12-2015

Hi ,

When you say interface is not used, is it admin down or not connected?

Thanks,

malshara · ‎07-12-2015

there is no traffic passing through

IOS image :s72033-advipservicesk9_wan-mz.122-33.SXI14.bin

Mohammed al Baqari · ‎07-13-2015

Please share the output of show interface command. Input queues getting filled means that your CPU should be high as well.

malshara · ‎07-13-2015

TenGigabitEthernet5/1 is up, line protocol is up (connected)
  Hardware is C6k 10000Mb 802.3, address is 0016.9cef.5fc0 (bia 0016.9cef.5fc0)
  Description: mns3, Link to cr2-cwt Te0/5/0/12 (ROADM: SC East 1/1/17)
  Internet address is 193.1.236.2/30
  MTU 9216 bytes, BW 10000000 Kbit, DLY 10 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 10Gb/s, media type is 10Gbase-LR
  input flow-control is on, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:04, output 00:00:02, output hang never
  Last clearing of "show interface" counters 1d01h
  Input queue: 55/75/6/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 39000 bits/sec, 46 packets/sec
  30 second output rate 1000 bits/sec, 1 packets/sec
  L2 Switched: ucast: 52589 pkt, 5381546 bytes - mcast: 3009 pkt, 444570 bytes
  L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 4374534 pkt, 435541397 bytes mcast

  L3 out Switched: ucast: 1617 pkt, 181114 bytes mcast: 0 pkt, 0 bytes
     4437299 packets input, 441975558 bytes, 0 no buffer
     Received 4384710 broadcasts (4374854 IP multicasts)
     0 runts, 0 giants, 2 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
     121606 packets output, 11442376 bytes, 0 underruns
     0 output errors, 0 collisions, 2 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

Madhukrishnan Gopinathan Nair · ‎07-13-2015

Is that packet count increase or decrease ?

Or is it stuck?

Thanks

Madhu

malshara · ‎07-14-2015

it is just stuck .

as I informed before no traffic passing through this interface and I already did a dump for the buffer and these are the results:

Buffer information for Medium buffer at 0x46B86088
  data_area 0x80F2344, refcount 1, next 0x0, flags 0x200
  linktype 79 (IPV6), enctype 1 (ARPA), encsize 14, rxtype 26
  if_input 0x5119468C (TenGigabitEthernet5/1), if_output 0x5119468C (TenGigabitEthernet5/1)
  inputtime 19w3d (elapsed 20w4d)
  outputtime 00:00:00.000 (elapsed never), oqnumber 65535
  datagramstart 0x80F23BA, datagramsize 110, maximum size 460
  mac_start 0x80F23BA, addr_start 0x80F23BA, info_start 0x0
  network_start 0x80F23C8, transport_start 0x80F23F0, caller_pc 0x425FA7D4


       0: AFACEFAD D0020400 03FB0000 01000000  /,o-P....{......
      16: 8B000000 0C110418 0E000040 00000000  ...........@....
      32: 03800000 00000001 007603FB 00000000  .........v.{....
      48: 00000000 2843A415 ACD248EC F3D0094E  ....(C$.,RHlsP.N
      64: 34811B9E 9C5B6F32 40F40002 000003FB  4....[o2@t.....{
      80: 28000380 0000BB00 00000000 00000000  (.....;.........
      96: 00000000 00000000 00000000 00038030  ...............0
     112: 00008107 00000000 00000016 9CEF5FC0  .............o_@
     128: 001BD543 3DB686DD 60000000 00383A2E  ..UC=6.]`....8:.
     144: 200142D0 00000100 00000000 00000003   .BP............
     160: 20010770 04000060 00000000 00000002   ..p...`........
     176: 0300F975 00000000 62800000 00081101  ..yu....b.......
     192: 20010770 04000060 00000000 00000002   ..p...`........
     208: 200142D0 00000200 00000000 00000006   .BP............
     224: E5EA82AC 0008069D 00000000 00000000  ej.,............
     240: 00000000 00000000 3E3E3E3E 3E3E3E3E  ........>>>>>>>>
     256: 3E3E3E3E 3E3E3E3E 3E3E3E3E 3E3E3E3E  >>>>>>>>>>>>>>>>
     272: 3E3E3E3E 3E3E3E3E 3E3E3E3E 3E3E3E3E  >>>>>>>>>>>>>>>>
     288: 3E3E3E3E 3E3E3E3E 3E3E6033 BE3E3E3E  >>>>>>>>>>`3>>>>
     304: 3E3E3E3E 3E3E3E3E 3E3E3E3E 3E3E3E3E  >>>>>>>>>>>>>>>>
     320: 3E3E3E3E 3E3E3E26 D3203964 38316664  >>>>>>>&S 9d81fd
     336: 37646331 36646231 64306164 36376238  7dc16db1d0ad67b8
     352: 34613066 39396535 37303963 32626361  4a0f99e5709c2bca
     368: 34310A3C 3C3C0A00 0A00726F 723D302E  41.<<<....ror=0.
     384: 31340D0A 0A000000 00000000 00000000  14..............
     400: 00000000 00000000 00000000 00000000  ................
     416: 00000000 00000000 00000000 00000000  ................
     432: 00000000 00000000 00000000 00000000  ................
     448: 00000000 00000000 00000000 00        .............   

Buffer information for Medium buffer at 0x46B8DDC4
  data_area 0x80FAF44, refcount 1, next 0x0, flags 0x200
  linktype 79 (IPV6), enctype 1 (ARPA), encsize 14, rxtype 26
  if_input 0x5119468C (TenGigabitEthernet5/1), if_output 0x5119468C (TenGigabitEthernet5/1)
  inputtime 14w2d (elapsed 25w4d)
  outputtime 00:00:00.000 (elapsed never), oqnumber 65535
  datagramstart 0x80FAFBA, datagramsize 110, maximum size 460
  mac_start 0x80FAFBA, addr_start 0x80FAFBA, info_start 0x0
  network_start 0x80FAFC8, transport_start 0x80FAFF0, caller_pc 0x425FA7D4


       0: AFACEFAD 18020400 03FB0000 01000000  /,o-.....{......
      16: 8B000000 0C110408 0E000040 00000000  ...........@....
      32: 03800000 00000001 007603FB 00000000  .........v.{....
      48: 00000000 00000001 000001A4 00000001  ...........$....
      64: 000003E8 000003E8 00000702 000003FC  ...h...h.......|
      80: 28000380 0000B000 00000000 00000000  (.....0.........
      96: 00000000 00000000 00000000 00038030  ...............0
     112: 00000000 01000000 00000016 9CEF5FC0  .............o_@
     128: 001BD543 3DB686DD 60000000 00383A2F  ..UC=6.]`....8:/
     144: 200142D0 00000100 00000000 00000003   .BP............
     160: 20010770 04000060 00000000 00000002   ..p...`........
     176: 0300F975 00000000 62800000 00081101  ..yu....b.......
     192: 20010770 04000060 00000000 00000002   ..p...`........
     208: 200142D0 00000200 00000000 00000006   .BP............
     224: E1D382AD 00080AB3 489B4238 473B40B8  aS.-...3H.B8G;@8
     240: 41FBF3A8 07F22AC4 3D3D0A73 65713D64  A{s(.r*D==.seq=d
     256: 64326635 0A68673D 34636636 32663664  d2f5.hg=4cf62f6d
     272: 0A74733D 35346165 37326136 0A6C643D  .ts=54ae72a6.ld=
     288: 302E3033 20302E30 3720302E 30362031  0.03 0.07 0.06 1
     304: 2F333034 20323232 34310A74 746C3D33  /304 22241.ttl=3
     320: 0A617574 683D3120 63396561 37396533  .auth=1 c9ea79e3
     336: 31623236 63383834 63386432 65633236  1b26c884c8d2ec26
     352: 36366661 33343162 34343431 30313935  66fa341b44410195
     368: 0A3C3C3C 0A000065 7200726F 723D302E  .<<<...er.ror=0.
     384: 33310D0A 0A000000 00000000 00000000  31..............
     400: 00000000 00000000 00000000 00000000  ................
     416: 00000000 00000000 00000000 00000000  ................
     432: 00000000 00000000 00000000 00000000  ................
     448: 00000000 00000000 00000000 00        .............   

Buffer information for Medium buffer at 0x46BB4534
  data_area 0x8125F44, refcount 1, next 0x0, flags 0x200
  linktype 79 (IPV6), enctype 1 (ARPA), encsize 14, rxtype 26
  if_input 0x5119468C (TenGigabitEthernet5/1), if_output 0x5119468C (TenGigabitEthernet5/1)
  inputtime 00:00:00.000 (elapsed never)
  outputtime 00:00:00.000 (elapsed never), oqnumber 65535
  datagramstart 0x8125FBA, datagramsize 110, maximum size 460
  mac_start 0x8125FBA, addr_start 0x8125FBA, info_start 0x0
  network_start 0x8125FC8, transport_start 0x8125FF0, caller_pc 0x425FA7D4

asales · ‎11-06-2015

My issue is on a 68070-xl in a VS40 configuration. INTERNET bound packets from a single remote network source. They're very small packets but we simply cant release them. When the input queue reaches the configured max, no traffic flows until we raise the maximum size of the input queue.

Cisco has sent my case to the developers for diagnostic and review.

packets stuck in Input queue