Virtual machines lose connectivity after enabling Port Mirroring on vSphere Distributed Switch

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• Virtual machines lose connectivity after enabling Port Mirroring on vSphere Distributed Switch.
• ESXi host or virtual machines running on this host loses network connectivity after enabling Port Mirroring sessions using Remote Switched Port Analyzer (RSPAN) or Encapsulated Remote Switched Port Analyzer (ERSPAN) on the vSphere Distributed Switch.
• In the vmkernel.log file, located at /var/log on the ESXi host, you see entries similar to:
  
  00:29:08.719Z cpu9:23180708)WARNING: Heap: 3529: Heap etherswitch already at its maximum size. Cannot expand
  

Resolution

This issue is resolved in:

• VMware ESXi 5.1, Patch Release ESXi510-201503001 (2099286)
  
• VMware ESXi 5.5, Patch Release ESXi550-201505002 (2114245)
• VMware ESXi 6.0, Patch Release ESXi600-201507001 (2111982)
  

Note: If you experience the preceding symptoms:

1. Gather diagnostic information from the ESXi host.For more information, see Collecting diagnostic information using the vm-support command in VMware ESX/ESX (1010705).
   
2. Contact VMware Technical Support by filing a support request, and note this KB article ID (2099838) in the problem description. For more information, see How to Submit a Support Request.
   

Additional Information

To be alerted when this document is updated, click the Subscribe to Article link in the Actions box. VMware ESXi 5.1, Patch Release ESXi510-201503001
vSphere 分散仮想スイッチでポートミラーリングを有効化すると、仮想マシンのネットワークが切断される
VMware ESXi 5.5, Patch Release ESXi550-201505002
在 vSphere Distributed Switch 上启用端口镜像后，虚拟机连接断开