Preview Tool

Cisco Bug: CSCuq94445 - ISSU failed: maximum downtime exceeded (0x4093003B)

Last Modified

Jun 11, 2018

Products (1)

  • Cisco Nexus 5000 Series Switches

Known Affected Releases

7.0(0)N1(1.1) 7.1(0)N1(0.335) 7.1(0)N1(0.342) 7.2(0)N1(0.116) 7.2(0)N1(0.180) 7.3(0)N1(0.113)

Description (partial)

Non disruptive ISSU fails with the reason code 0x4093003B (maximum downtime exceeded)

`show system reset-reason`
----- reset reason for Supervisor-module 1 (from Supervisor in slot 1) ---
1) At 169466 usecs after Sat Jun 12 13:21:34 2017
    Reason: Reset Requested due to Fatal System Error
    Service: ISSU failure: 0x4093003B

    Version: 7.1(4)N1(1)

Seen in Nexus 5500, 6000 and 5600 series switches with FC/FCoE enabled. This bug can be seen if FSPF process does not come back online within time after a non disruptive ISSU upgrade

Related Community Discussions

Nexus 6004 upgrade nightmare
I have now had 2 weekends ruined by a botched ISSU upgrade on 2 pairs of nexus 6004.  We are going from 6.0.2.N2.2 to 7.0.5.N!.1 and each time I encountered a bug.  Last week it was an igmp snooping bug.  Turn off igmp snooping and it will be fine.  So this week I did that and no, it wasnt fine.  I hit a new bug regarding sending BPDUs down dual sided VPCs (ouch).  Thank you very much.  Has anyone else had these kinds of problems with ISSU upgrades?  Im have done 15 pairs of 5ks in the last 2 months...the ...
Latest activity: Apr 19, 2015
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.