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Cisco Bug: CSCsz41916 - isis process crash from out of range LSP lifetime

Last Modified

Jan 07, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

isis process crashes and restarts without impact on traffic forwarding. 

The isis process crashes when the remaining lifetime returned for an LSP is 
greater than the max value of 16-bit unsigned integer, 65535. 

This is considered a rare occurence. 

When NSF is being used, the logs show IS-IS messages as if the adjacencies 
transition and get reset; this is caused since timestamps are not stored 
across an NSF restart. The states on adjacent neighbors show the correct 
state of affairs: that no adjacency resets in fact take place.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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