Random virtual machines after vMotion and Storage vMotion network loss

Hi all -

I have a couple of tickets open with VMware and our supplier of SAN, EqualLogic, on this issue.  Since the configuration of our production and DMZ clusters we noticed that the virtual machines will sometimes drop network connectivity after a successful vMotion and Storage vMotion.  Sometimes, although much less frequently, virtual machines also spontaneously lose network overnight.  What happened only a few times.  The strange thing is that the other guests on the VM host are fine - they lose any network.  Actually, I can do no more than 3 computers virtual host to another, and 2 of 3 can switch correctly, so that we lose the network.  The work around?  Simply 'disconnect' from the virtual NETWORK card 'reconnect' and the virtual machine will start the return packets.  I can also switch the VM troubled return to the host State and it will find the network.  I can it reboot and re - win network.  I can re - install the virtual card completely, and she re - win network.

VMware has seen a lot of mistakes of SAN in our log files in order to update us our SAN firmware to the latest version.  That seems to have fixed that but we still have the issue.  Here are some of the specifications - all environments are virtually identical except for memory:

Of PowerEdge R810

NICs Broadcom 5709

EqualLogic SAN running 5.0.5 F/W

We use frames.  ESXi is fully patched.  I haven't seen a boss or not, it is only some guest operating system that loses the network, but we are a Windows environment.

When a virtual machine loses the network, we can not:

  • Ping to it
  • Ping it
  • Ping him at the virtual machines on the same host or vSwitch
  • Ping outside our network
  • resolve DNS, etc..

I followed some KBs VMware without success, including:

http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1003839
http://KB.VMware.com/selfservice/microsites/search.do?cmd=displayKC & externalId = 1002811 (port security is not enabled)

-All the VMware tools have been updated to the latest version correct and corresponds to the ESXi host
-Connected to the service ESXi console, I cannot ping the VM problem by name of host or IP address, but I can ping do not affected by the issue of the OTHER virtual machines.  I can also pings the service console.
-Connected to the troubled virtual machine itself, I cannot ping other virtual machines, I can't resolve host names, I cannot ping by IP.  The machine virtual CAN ping itself by IP, but not hostname.  I cannot ping other virtual computers on the same virtual switch or network by either IP or host name.  I can't ping the vSwitch network management.
-All vSwitches are configured in the same way and the same.
-Notify the switches is set to yes
-There are a lot of available virtual ports
-We tried the E1000 and VMXNET virtual cards with no difference.
-All cards are configured to negotiate, but we tried to force individuals speeds as well as with no difference

I appreciate your help.  I have problems getting anywhere on this issue with the sellers.

wkucardinal wrote:

Still having the issue...

Sometimes, it might be useful to really check that all uplinks VMNIC for all VLAN does work them. Try this is to create a new portgroup on the vSwitch used by your virtual machines on the host of the first, put a test VM on the portgroup, then go into the NIC teaming policy from the new portgroup and select "Override switch command failover."

Then down vmnic all except one in unused, then only a single VMNIC is active. Then set the portgroup VLAN to a production of VLAN and try to see if we could ping some expected from the different addresses. If it works, then move VMNIC work until unused and move up to another asset. Try again, and this for all the vmnic. If it works, then you have verified that the configuration of VLANS and other settings are correct on the physical switch in the face of this host ports.

If several VLANs, repeat the process for all other productions VLAN. Then repeat on the other hosts.

While that may take some time, occurs if everything is properly configured on the physical switches. When occurs a vMotion virtual machine gets a new "Port code" and is assigned to a new outgoing VMNIC. If there is an error of configuration on one or more physical ports that might seem random, but may still happen on VLAN x on y VMNIC. Given that Port ID policy you use indeed spread randomly VMs on the vmnic these problems may be difficult to diagnose. (Make a disconnection of the VM vNIC gives the virtual machine a new port-ID, which it will move to a new outgoing VMNIC, which might seem to solve the problem.)

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