Enabling the VLAN/MTU Health Check feature on the vSphere Distributed Switch results in log spew: VLANMTUCheck: NMVCPortVLANResultPoll:320: not find psReq for ps DvsPortset in the vmkernel.log

Products

• VMware

Issue/Introduction

Symptoms:

• When the VLAN/MTU Health Check feature is enabled on the vSphere Distributed Switch, it results in a log spew.
• In the /var/log/vmkernel.log file on the ESXi host, you see a log spew similar to:
  
  <YYYY-MM-DD>T<time> 363Z cpu9:33631)VLANMTUCheck: NMVCPortVLANResultPoll:320: not find psReq for ps DvsPortset-0 port 0x3000005
  <YYYY-MM-DD>T<time> 363Z cpu9:33631)VLANMTUCheck: NMVCPortMTUResultPoll:508: not find psReq for ps DvsPortset-0 port 0x3000003</time></time>
  

Cause

This issue occurs if the VLAN/MTU Health Check feature being enabled prior to adding uplinks to a Link Aggregation Control Protocol (LACP) Link Aggregation Groups (LAG) on a vSphere Distributed Switch.
For more information on the differences between LACP support in vSphere 5.5 and vSphere 5.1 and LACP limitations, see:

• Differences in LACP Support in vSphere Distributed Switch 5.5 and 5.1 (2051316)
• LACP Limitations in vSphere 5.5 (2051307)

Resolution

This issue is resolved in ESXi 5.5 Patch 03 Build 2143827 and later versions. For more information on ESXi 5.5 Patch 03, see VMware ESXi 5.5, Patch Release ESXi550-201410001 (2087358).

Note: These warning messages are benign and can be safely ignored.

Additional Information

For more information on configuring Multiple Link Aggregation Groups (LAGs) with the vSphere Web Client, see the LACP Support on a vSphere Distributed Switch section in the vSphere Networking Guide.

Depending on the options that you select, vSphere Distributed Switch Health Check can generate a significant number of MAC addresses for testing teaming policy, MTU size, VLAN configuration, resulting in extra network traffic. For more information, see Network health check feature limitations in vSphere 5.1 and 5.5 (2034795).

After you disable vSphere Distributed Switch Health Check, the generated MAC addresses age out of your physical network environment according to your network policy.

VMware ESXi 5.5, Patch Release ESXi550-201410001
vSphere 分散仮想スイッチの健全性チェックの機能で [VLAN および MTU] を有効にすると、次のメッセージが vmkernel.log に大量に出力される： VLANMTUCheck: NMVCPortVLANResultPoll:320: not find psReq for ps DvsPortset