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Cisco Bug: CSCur00762 - ASR1k - incorrect traffic classification after HW TCAM is exhausted

Last Modified

Jan 29, 2017

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.2(4)S

Description (partial)

Symptom:
On an ASR1K series router, if IPSec is enabled, then cleartext traffic may be 
mis-classified and subsequently dropped when the HW TCAM resources are
exhausted.

Conditions:
This occurs when the router falls back to using the SW TCAM. The following 
log messages can be seen before the failure:

%CPP_FM-3-CPP_FM_TCAM_WARNING: SIP0: cpp_sp:  TCAM limit exceeded: HW TCAM cannot hold Class group ipsec-rule:1.6.6.396754945.  Use SW TCAM instead.
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Bug Details Include

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