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New Member

ISSU upgrade fails cisco nexus 7018 switch


Hi Experts ,


We are trying to upgrade our nexus switch from 5.2(4) to 6.2(2a) through upgrade procedure. While installing the image we are getting the below error ,

Notifying services about system upgrade.

Show tech brief will take  4-6 minutes to complete. Please Wait ...
 writing reset reason 16, aclmgr hap reset

NX7 SUP Ver 3.22.0
Serial Port Parameters from CMOS
PMCON_1: 0x200
PMCON_2: 0x0
PMCON_3: 0x3a
PM1_STS: 0x101
Performing Memory Detection and Testing
Total mem found : 8192 MB
Performing memory test... Passed.
NumCpus = 2.....



And the active supervisor engine reloads automatically and the failover is happening.And below is the show system reset commnad output


  Reason: Reset triggered due to HA policy of Reset
  System version: 5.2(4)
  Service: aclmgr hap reset 

There is no active config session , no stp changes , no inactive acl config , but still it fails. We have one more standby nexus switch with same model and Image . There, the upgrade was successful.


Please let me know if there are any clues on this.








Everyone's tags (1)
New Member

I'm having the same issue

I'm having the same issue with a Nexus 7009, from 6.1(1) to 6.2(8)b with dual supervisors.

Secondary Nexus went fine and then the primary gave me the same crash and was not possible to upgrade it.