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Cisco Bug: CSCun65049 - 'no ip nat service nbss' has no impact withTCP port 139 traffic on Sup2T

Last Modified

Jan 31, 2017

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

15.1(1)SY2.53

Description (partial)

Symptom:
when traffic with tcp port 139 is being used as source or destination port traffic is being forwarded in software even though netflow entry is installed

Conditions:
- PAT is configured.  
- sup2t only.  Earlier supervisor generations are not affected.
- "no ip nat service nbss" is configured.
- Traffic with source/destination port as 139 is sent through the switch
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