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Cisco Bug: CSCvu36778 - [MTS] NDB doesn't respect nx.flows.batch.size setting when removes stale flow entries

Last Modified

Aug 04, 2020

Products (1)

  • Cisco Nexus Data Broker

Known Affected Releases

NDB-03.9.0

Description (partial)

Symptom:
Following logs are seen:
INFO  com.cisco.csdn.monitor.internal.NDBFlowLayerManager:default - Removing stale source flows for node <...>

followed by
WARN  com.cisco.csdn.protocol_plugin.nxapi.service.internal.ElementServices - Invalid response null for device NetworkElement [address=XXX, port=443, protocol=https] for cmds [ <...> ]  due to Read timed out.

Conditions:
When NDB applies configuration updates on the switches in NX-AP mode, update is usually divided in batches, [nx.flows.batch.size] (default 60) per batch.

But if NDB upgraded to 3.9 performs stale entries removal (seen because of software defect in 3.8), updates are pushed in one huge batch.
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Bug Details Include

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