Virtualized ESXi5 - network problems with nested VMS

Happy new year!

I am facing some issues on my test environment, which is as follows:

  • -my host system is a step of laptop Linux Mint 11 (2.6.38 - 8-generic #42 - Ubuntu SMP)
  • -I'm using VMWare Workstation 8.0.1 build-528992
  • -J' I install bridged networking on a virtual interface (made with brctl) for all virtual machines and the host provides dhcp, dns, tftp, etc... facilities
  • -All virtual machines are on the network briged and all see each other, the host and the internet perfectly well

Now the part ESXi:

  • -the server ESXi 5 (free basic license) is vitualized with a single vnic and bridged networks (same as all other virtual machines) and as a virtual machine of ESXi 5 (was a nice surprise to see that the 8 WS knows out-of-the-box)
  • -J' I install that some virtual machines nested in this virtual ESXi
  • -the VM ESXi can talk to other systems, that is, the host, the other virtual machines and its own virtual machines

The problem is that nested virtual computers can talk to each other or the console, but not to the computer host or other virtual machines, except the ESXi itself.

I have tried the following with no chance:

  • -Add an another vnic to the ESXi and devote a vswitch for virtual machines
  • -use NAT or network invited only for the VM ESXi
  • disable/unload the ESXi firewall

The only thing that works are a little DHCP, although it seems the acknowledgement never reach nested VMs. However, they still get a correct, but after that IP address are not able to receive any ARP traffic. If you manually add arp entries and can see CIMP inquiry vnet0 (bridge) of VMs nested to other machines as well as the corresponding answers. If ping on the other hand, I see only the applications, which means that the traffic is not sent to the nested virtual machines.

The vswitch ESXi is configured to accept the promiscuous mode, change MAC address and forged passes.

Thanks in advance if anyone has an idea

"Promiscuous" mode is enabled for/dev/vmnet0 on the physical host?  See http://kb.vmware.com/kb/287 for more details.

Tags: VMware

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