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Cisco Bug: CSCur13869 - ONS-SC+-10GEP30.3 optics causing LC crash on IM

Last Modified

May 06, 2020

Products (8)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases


Description (partial)

Continuous back to back envmon_lc process crash seen on the ASR9001.

On ASR9001 with SFP/XFP inserted in ports, if envmon alarms (Tx power, Rx power, Voltage) are generated on these SFP/XFP, then this issue of linecard crash will be seen. 

This can occur on any ASR9k box with any type of port. The issue is present since 4.2.3 release. Please note that the alarms are not the actual reason for the LC crash, but the traces corresponding to these alarms.

Related Community Discussions

<key>CSCur13869</key> - ONS-SC+-10GEP30.3 optics causing LC crash on IM
I have the same problem with release 5.2.2 and with A9K-MPA-2X10GE module: LC/0/0/CPU0:Feb  6 22:03:08.382 : ifmgr[210]: %PKT_INFRA-LINK-3-UPDOWN : Interface TenGigE0/0/2/3, changed state to Down LC/0/0/CPU0:Feb  6 22:03:08.411 : ifmgr[210]: %PKT_INFRA-LINK-3-UPDOWN : Interface TenGigE0/0/2/1, changed state to Up RP/0/RSP0/CPU0:test_9001#LC/0/0/CPU0:Feb  6 22:03:08.912 : ifmgr[210]: %PKT_INFRA-LINK-3-UPDOWN : Interface TenGigE0/0/2/3, changed state to Up RP/0/RSP0/CPU0:test_9001# RP/0/RSP0/CPU0:test_9001#LC/0/0/CPU0:Feb ...
Latest activity: Feb 06, 2015
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