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Cisco Bug: CSCvu80347 - Part of the unicast traffic(DCERPC/TCP) is being flooded in NDB with Openflow scenario

Last Modified

Jul 10, 2020

Products (1)

  • Cisco Nexus 3000 Series Switches

Known Affected Releases

7.0(3)I7(8) 9.3(4)

Description (partial)

Symptom:
Part of the traffic is being flooded out of all active ports.

It looks to be unicast traffic(TCP/DCERPC). The problem is not existing when no NDB connections are configured on port where traffic is received.

Conditions:
Nexus 3548 NDB with Openflow.

Port which is receiving traffic has to have NDB connection configured to redirect traffic to other port. If such connection is not configured traffic is being dropped because of default drop match.
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