Preview Tool

Cisco Bug: CSCuo46284 - N55xxUP showing SFP uC: Module 1: v0.0.0.0

Last Modified

Aug 25, 2020

Products (5)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases


Description (partial)

SFP uC: version shown as v0.0.0.0
Additionally some ports of the device might stop detecting SFP insertion and removal and stuck in "SFP validation failed" state.

After upgrading the Nexus 55XXUP, the version will show as v1.0.0.0, but upon bringing the FEXes online, we see that the SFP uC version changes to v0.0.0.0

- This issue is also seen in environments without the FEX or if the switch was connected to FEX anytime in the past.

Related Community Discussions

N5K - 7.0(1)N1(1) upgrade (from 5.0 & 5.2)
Many of you might be upgrading to Version 7.0(1)N1(1) as it is becoming a standard. Though there are various features that might help, you need to take extra care during the overall IOS upgrade procedure for 7.0. If you upgrade from 7.0 from any version, there is a chance that your Zone might be isolated, and IP connectivity is lost to everything behind the pair of N5Ks. We just experienced this.   We upgraded from 5.0(3)N2(1) to 7.0(1)N1(1).   Firstly, after upgrading, we lost all FEX configs and ...
Latest activity: May 15, 2014
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.