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Cisco Bug: CSCuk49378 - Config sync and FIB update to standby create race condition

Last Modified

Jul 21, 2017

Products (8)

  • Cisco IOS
  • Cisco 7301 Router
  • Cisco 7206 Router
  • Cisco 7206VXR Router
  • Cisco 7204 Router
  • Cisco 7202 Router
  • Cisco 7204VXR Router
  • Cisco 7304 NPE-G100 Network Processing Engine

Known Affected Releases

12.0(23)S1 12.0(23)S3 12.0(23.4)S2 12.0(24)S2 12.0(24)S4a 12.0(24.3)S 12.0(24.4)S 12.0(24.4)S1 12.0(26)S1 12.0(26)S1.223 12.0(26)S1.321 12.0(26.4)S2 12.0(27)S2 12.0(30)S 12.0(30.2)S 12.0(30.3)S 12.0(31)S 12.0(31.1)S 12.0(32)S 12.0S 12.2(17.8)SPI2 12.2(18)S2 12.2(18)S3 12.2(18)SX 12.2(18)SXD2 12.2(18)SXD3 12.2(18.3.1)SXD 12.2(18.6.13)SX 12.2(18.6.35)SX 12.2(20)S3 12.2(20)S4 12.2(20)S4a 12.2(25)S3 12.2(27.1.10)SIE7 12.2(27.1.18)SIK7 12.2(27.7)S1 12.2(27.7.3)SBR3 12.2(27.7.3)SIE7 12.2(27.7.4)SIK7 12.2S 12.2SIE7 12.2SIK7 12.2SIP6 12.2SW

Description (partial)

Symptoms: You may see spurious messages or traceback such as FIBNULLIDB and 
FIBNULLHWIDB on a standby RP. These spurious traceback messages relate to 
FIB interface entries that do not have corresponding interface entries.

Conditions: This symptom is observed when you configure an interface that is  
actively processing traffic. The configuration of the interface may consist of 
an addition, deletion or modification.
The router is running with <CmdBold>mode sso<noCmdBold> configured.
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Bug Details Include

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