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Cisco Bug: CSCvs17554 - Traffic drop from VMs connected to Nexus1000VE VSE at 'vmxnet3' (inside-trunk mapped adapter)

Last Modified

Mar 23, 2020

Products (1)

  • Cisco Nexus 1000V Switch for VMware vSphere

Known Affected Releases

5.2(1)SV5(1.2) 5.2(1)SV5(1.3)

Description (partial)

Symptom:
All traffic from VM connected to Nexus1000VE gets dropped.

Conditions:
Trigger unknown.  All traffic from VM connected to Nexus1000VE gets dropped at VSE 'inside-trunk' adapter that is mapped to vmxnet3.  This can be confirmed by following commands

@ VSE no port drops seen  ( Use following commands to confirm )
# vemcmd show port-drops ingress  ( run multiple times to check if any drop counters incrementing )
# vemcmd show port-drops egress  ( run multiple times to check if any drop counters incrementing )
# vemcmd show dpdk stats  ( run multiple times to check if any drop counters incrementing )

@ HOST
#net-stats -l   ( Note down the 'PortNum' and 'Switchname' for inside-trunk adapters )

#esxcli network port stats get --portid=<PortNum>   ( run multiple times to check if any drop counters incrementing )

#vsish -e get /net/portsets/<Switchname>/ports/<PortNum>/clientStats   ( run multiple times to check if any drop counters incrementing )
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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