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Cisco Bug: CSCuj34455 - NAT Process Switches all TCP port 139 Traffic

Last Modified

Apr 17, 2019

Products (1)

  • Cisco IOS

Known Affected Releases

12.2(33)SXJ5.1

Description (partial)

Symptom:
A router experiences high CPU due to NAT when passing TCP port 139 traffic.

Conditions:
NAT must be configured and the traffic flowing through that is causing high CPU must be TCP port 139 traffic. This may or may not be Netbios traffic, which normally operates over TCP port 139.
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