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Nexus 5020 reloads but no signs of issue

Bedevere Curry
Level 1
Level 1

Hi Cisco team

I have a Nexus 5020 and it reloads sometimes unexpectedly. No crash file and it has dual power supply.

---- show tech-support ----

`show switchname`


`show system uptime`

System start time:          Thu Jun 27 19:06:51 2013

System uptime:              0 days, 0 hours, 49 minutes, 52 seconds

Kernel uptime:              0 days, 0 hours, 53 minutes, 45 seconds

Active supervisor uptime:   0 days, 0 hours, 49 minutes, 52 seconds

`show interface mgmt0`

mgmt0 is down (Link not connected)

  Hardware: GigabitEthernet, address: 000d.ece9.5940 (bia 000d.ece9.5940)

  Description: MGMT

  Internet Address is

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

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

  Encapsulation ARPA

  auto-duplex, auto-speed

  1 minute input rate 0 bits/sec, 0 packets/sec

  1 minute output rate 0 bits/sec, 0 packets/sec


    0 input packets 0 unicast packets 0 multicast packets

    0 broadcast packets 0 bytes


    0 output packets 0 unicast packets 0 multicast packets

    0 broadcast packets 0 bytes

`show system resources`

Load average:   1 minute: 0.34   5 minutes: 0.45   15 minutes: 0.27

Processes   :   239 total, 1 running

CPU states  :   7.9% user,   2.0% kernel,   90.1% idle

Memory usage:   2074284K total,   1041840K used,   1032444K free

                      0K buffers,  647812K cache

`show version `

Cisco Nexus Operating System (NX-OS) Software

TAC support:

Copyright (c) 2002-2010, Cisco Systems, Inc. All rights reserved.

The copyrights to certain works contained herein are owned by

other third parties and are used and distributed under license.

Some parts of this software are covered under the GNU Public

License. A copy of the license is available at


  BIOS:      version 1.2.0

  loader:    version N/A

  kickstart: version 4.2(1)N2(1a)

  system:    version 4.2(1)N2(1a)

  power-seq: version v1.2

  BIOS compile time:       06/19/08

  kickstart image file is: bootflash:/n5000-uk9-kickstart.4.2.1.N2.1a.bin

  kickstart compile time:  10/1/2010 11:00:00 [10/01/2010 18:32:12]

  system image file is:    bootflash:/n5000-uk9.4.2.1.N2.1a.bin

  system compile time:     10/1/2010 11:00:00 [10/01/2010 19:48:54]


  cisco Nexus5020 Chassis ("40x10GE/Supervisor")

  Intel(R) Celeron(R) M CPU    with 2074284 kB of memory.

  Processor Board ID JAF1345BDEC

  Device name: xxxxxxxx

  bootflash:    1003520 kB

Kernel uptime is 0 day(s), 0 hour(s), 53 minute(s), 46 second(s)

Last reset

  Reason: Unknown

  System version: 4.2(1)N2(1a)


4 Replies 4

Reza Sharifi
Hall of Fame
Hall of Fame


You could be hitting a bug in that version of OS
try upgrading to newer version and keep an eye it for a while and see if the problem disappears.


Sent from Cisco Technical Support iPad App

any bug in particular and what do you recomending upgrading to. thanks

Don't know of a particular bug id, but I use 5.1(3) on 5548 switches and it seems to be fine.


Sent from Cisco Technical Support iPad App

InayathUlla Sharieff
Cisco Employee
Cisco Employee


The code you are running is old plan for the upgrade of the same.



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