Cisco Bug: CSCvw03736 - Netflow exporter traffic is sent with a UDP source port of 0.
Oct 14, 2020
- Cisco ASR 1000 Series Aggregation Services Routers
Known Affected Releases
Symptom: Exporter traffic will be sent with a UDP source port of "0" instead of the value displayed within the show command "show flow exporter <flow_name>. A packet trace or packet capture will show that the exported packet is sent with a source port of 0. The collector will receive the traffic with a source port of 0. Conditions: Netflow configured with at least one active exporter. The symptoms are usually seen following upgrade.
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Bug Details Include
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