Preview Tool

Cisco Bug: CSCvs21165 - NCS540-External Alarm port behaviour is incorrect

Last Modified

Jun 22, 2020

Products (6)

  • Cisco Network Convergence System 5500 Series
  • Cisco NCS 540X-ACC-SYS Router
  • Cisco IOS XR Software
  • Cisco Network Convergence System 540 Router
  • Cisco NCS 540-ACC-SYS Router
  • Cisco NCS 540-24Z8Q2C-SYS Router

Known Affected Releases


Description (partial)


As per NCS540 hardware specs , four RJ45 external Alarm ports are supported. But, these external Alarm Ports were not reflecting the correct Alarm status of the pins. Separate Alarms for raise and clear event was also not being raised.

Connecting the external RJ45 alarm port to any sensor device (voltage/temperature/fire etc) and raise/clear the alarm condition
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.