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Cisco Bug: CSCup55389 - Traffic to TCP port 8472 dropped on the VEM

Last Modified

Nov 27, 2020

Products (2)

  • Cisco Nexus 1000V Switch for VMware vSphere
  • Cisco Nexus 1000V Switch

Known Affected Releases

4.2(1)SV2(2.1)

Description (partial) 

Symptom:
Packets destined to TCP port 8472 are dropped from VMs that have 'TCP checksum offload' enabled
	- It works fine for UDP traffic
	- It works fine on the VMWare DVS/Standard switch
	- There is no VXLAN configuration at all

Conditions:
Happens only for TCP traffic destined to port 8472 and from VMs that have 'TCP checksum offload' enabled
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