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Nexus 7009 dropping packets

I have a customer running Nexus 7009 running NX-OS 6.0.(4) and having some serious iSCSI issues which is affecting SQL and some critical applications.  The basic problem is dropped iSCSI packets which seems to indicate a network problem.  We tried eliminating MPIO at the host (Windows 2003 and Win 2008), as well as upgrading Proliant/Broadcom NIC drivers and MS iSCSI initiators, yet the problem persists.

Port 3/17-20 are connected to HP 3PAR Array (4 Nodes), and Port 4/19 as a test server. I don't know if it is a bug with the current Nexus software 6.0.4 or issue with the port settings.

See below the brief output (version, show interface stats etc)

show version

Cisco Nexus Operating System (NX-OS) Software

TAC support: http://www.cisco.com/tac

Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_series_home.html

Copyright (c) 2002-2012, Cisco Systems, Inc. All rights reserved.

The copyrights to certain works contained in this software are

owned by other third parties and used and distributed under

license. Certain components of this software are licensed under

the GNU General Public License (GPL) version 2.0 or the GNU

Lesser General Public License (LGPL) Version 2.1. A copy of each

such license is available at

http://www.opensource.org/licenses/gpl-2.0.php and

http://www.opensource.org/licenses/lgpl-2.1.php

Software

  BIOS:      version 3.22.0

  kickstart: version 6.0(4)

  system:    version 6.0(4)

  BIOS compile time:       02/20/10

  kickstart image file is: bootflash:///n7000-s1-kickstart.6.0.4.bin

  kickstart compile time:  12/25/2020 12:00:00 [06/22/2012 12:26:16]

  system image file is:    bootflash:///n7000-s1-dk9.6.0.4.bin

  system compile time:     6/6/2012 18:00:00 [06/22/2012 14:03:20]

Hardware

  cisco Nexus7000 C7009 (9 Slot) Chassis ("Supervisor module-1X")

  Intel(R) Xeon(R) CPU         with 8251592 kB of memory.

  Processor Board ID JAF1649ABCL

  Device name: IAD-MDF-CSW1

  bootflash:    2048256 kB

  slot0:              0 kB (expansion flash)

Kernel uptime is 291 day(s), 19 hour(s), 41 minute(s), 31 second(s)

Last reset

  Reason: Unknown

  System version: 6.0(4)

  Service:

plugin

  Core Plugin, Ethernet Plugin

CMP (Module 1) ok

CMP Software

  CMP BIOS version:        02.01.05

  CMP Image version:       6.0(1) [build 6.0(0.66)]

  CMP BIOS compile time:   8/ 4/2008 19:39:40

  CMP Image compile time:  6/6/2012 18:00:00

CMP (Module 2) ok

CMP Software

  CMP BIOS version:        02.01.05

  CMP Image version:       6.0(1) [build 6.0(0.66)]

  CMP BIOS compile time:   8/ 4/2008 19:39:40

  CMP Image compile time:  6/6/2012 18:00:00

`show module`

Mod  Ports  Module-Type                         Model              Status

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

1    0      Supervisor module-1X                N7K-SUP1           active *

2    0      Supervisor module-1X                N7K-SUP1           ha-standby

3    32     1/10 Gbps Ethernet Module           N7K-F132XP-15      ok

4    48     10/100/1000 Mbps Ethernet XL Module N7K-M148GT-11L     ok

Mod  Sw              Hw

---  --------------  ------

1    6.0(4)          3.0    

2    6.0(4)          3.0    

3    6.0(4)          1.2    

4    6.0(4)          1.2    

Mod  MAC-Address(es)                         Serial-Num

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

1    84-78-ac-55-f8-b0 to 84-78-ac-55-f8-b8  JAF1649ABCL

2    84-78-ac-55-f3-e0 to 84-78-ac-55-f3-e8  JAF1649AASC

3    ac-f2-c5-e6-5f-a0 to ac-f2-c5-e6-5f-e4  JAF1647BHDK

4    e0-2f-6d-02-af-ac to e0-2f-6d-02-af-e0  JAF1648AAFJ

Mod  Online Diag Status

---  ------------------

1    Pass

2    Pass

3    Pass

4    Pass

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

Ethernet3/17 is up

  Dedicated Interface

  Hardware: 1000/10000 Ethernet, address: acf2.c5e6.5fb0 (bia acf2.c5e6.5fb0)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec

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

  Encapsulation ARPA

  Port mode is access

  full-duplex, 10 Gb/s, media type is 10G

  Beacon is turned off

  Auto-Negotiation is turned on

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  EtherType is 0x8100

  Last link flapped 21week(s) 2day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 1240528 bits/sec, 1893 packets/sec

  30 seconds output rate 44657920 bits/sec, 3720 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 1.07 Mbps, 1.79 Kpps; output rate 44.11 Mbps, 3.62 Kpps

  RX

    6212152185 unicast packets  429281 multicast packets  1217 broadcast packets

    6215450735 input packets  8325559809873 bytes

    0 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  2868052 input discard

    0 Rx pause

  TX

    4365896409 unicast packets  6994873 multicast packets  5685775 broadcast packets

    4378577057 output packets  3636859601639 bytes

    0 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  0 output discard

    0 Tx pause

  1 interface resets

Ethernet3/18 is up

  Dedicated Interface

  Hardware: 1000/10000 Ethernet, address: acf2.c5e6.5fb1 (bia acf2.c5e6.5fb1)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec

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

  Encapsulation ARPA

  Port mode is access

  full-duplex, 10 Gb/s, media type is 10G

  Beacon is turned off

  Auto-Negotiation is turned on

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  EtherType is 0x8100

  Last link flapped 21week(s) 2day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 88 bits/sec, 0 packets/sec

  30 seconds output rate 832 bits/sec, 0 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 168 bps, 0 pps; output rate 616 bps, 0 pps

  RX

    816332607 unicast packets  429272 multicast packets  4688 broadcast packets

    816770935 input packets  1029653115941 bytes

    0 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  4368 input discard

    0 Rx pause

  TX

    559486852 unicast packets  6994692 multicast packets  5682191 broadcast packets

    572163735 output packets  488780855539 bytes

    0 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  0 output discard

    0 Tx pause

  1 interface resets

Ethernet3/19 is up

  Dedicated Interface

  Hardware: 1000/10000 Ethernet, address: acf2.c5e6.5fb2 (bia acf2.c5e6.5fb2)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec

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

  Encapsulation ARPA

  Port mode is access

  full-duplex, 10 Gb/s, media type is 10G

  Beacon is turned off

  Auto-Negotiation is turned on

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  EtherType is 0x8100

  Last link flapped 21week(s) 2day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 957736 bits/sec, 1838 packets/sec

  30 seconds output rate 44128776 bits/sec, 3643 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 941.03 Kbps, 1.75 Kpps; output rate 43.49 Mbps, 3.53 Kpps

  RX

    656897825 unicast packets  429277 multicast packets  4017 broadcast packets

    657333669 input packets  807689030859 bytes

    0 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  2550 input discard

    0 Rx pause

  TX

    492336795 unicast packets  6994825 multicast packets  5682939 broadcast packets

    505014559 output packets  437551853812 bytes

    0 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  0 output discard

    0 Tx pause

  1 interface resets

Ethernet3/20 is up

  Dedicated Interface

  Hardware: 1000/10000 Ethernet, address: acf2.c5e6.5fb3 (bia acf2.c5e6.5fb3)

  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec

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

  Encapsulation ARPA

  Port mode is access

  full-duplex, 10 Gb/s, media type is 10G

  Beacon is turned off

  Auto-Negotiation is turned on

  Input flow-control is off, output flow-control is off

  Rate mode is dedicated

  Switchport monitor is off

  EtherType is 0x8100

  Last link flapped 21week(s) 2day(s)

  Last clearing of "show interface" counters never

  30 seconds input rate 32 bits/sec, 0 packets/sec

  30 seconds output rate 832 bits/sec, 0 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 88 bps, 0 pps; output rate 552 bps, 0 pps

  RX

    691372990 unicast packets  429273 multicast packets  4555 broadcast packets

    691824812 input packets  850421645740 bytes

    0 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  17994 input discard

    0 Rx pause

  TX

    516293350 unicast packets  6994665 multicast packets  5682306 broadcast packets

    528970321 output packets  457198205525 bytes

    0 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  0 output discard

    0 Tx pause

  1 interface resets

Ethernet4/19 is up

  Dedicated Interface

  Hardware: 10/100/1000 Ethernet, address: e02f.6d02.afbe (bia e02f.6d02.afbe)

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec

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

  Encapsulation ARPA

  Port mode is access

  full-duplex, 1000 Mb/s

  Beacon is turned off

  Auto-Negotiation is turned off

  Input flow-control is on, output flow-control is on

  Auto-mdix is turned on

  Switchport monitor is off

  EtherType is 0x8100

  Last link flapped 15:39:53

  Last clearing of "show interface" counters never

  30 seconds input rate 72 bits/sec, 0 packets/sec

  30 seconds output rate 1016 bits/sec, 0 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 264 bps, 0 pps; output rate 600 bps, 0 pps

  RX

    65076 unicast packets  0 multicast packets  377 broadcast packets

    65453 input packets  50864500 bytes

    0 jumbo packets  0 storm suppression packets

    0 runts  0 giants  0 CRC  0 no buffer

    0 input error  0 short frame  0 overrun   0 underrun  0 ignored

    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop

    0 input with dribble  0 input discard

    0 Rx pause

  TX

    49177 unicast packets  33361 multicast packets  22469 broadcast packets

    105007 output packets  41816639 bytes

    0 jumbo packets

    0 output error  0 collision  0 deferred  0 late collision

    0 lost carrier  0 no carrier  0 babble  0 output discard

    0 Tx pause

  8 interface resets

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