Replacement of the corporate network switches how ESX and VM will react?
We replace all our switches in current network with new gear. All our ESX network connections are redundant (console, vmotion and virtual machine) with each connection associated with a different switch (for example the virtual machine NIC is connected to different switches and the same for other groups of ports). I was wondering what will happen when migrate us to the new switches. We intend to make this port a port at a time. My guess is that when we have the first virtual machine network cable and move again preconfigured port switch all the VMS on this NETWORK adapter will switch to the other NETWORK adapter as if it was a failure. The migrated Server NETWORK card will be auto-negotiation with the new port and become availble for use but VM will not request for load balancing between the two network cards. We then will at some point to move the other virtual machine from the old network card switch to a new switch and the VM are switched to the new other switch port and as the first card NETWORK occurs autonegotiation and the nic will become available. But how do I get the network traffic balancing across both connections of NIC's virtual machine? I understand that load balancing of virtual machine through the NETWORK interface only to the market and vmotions card - is this true and if so how can I force a reload balance or even manually load balance... Thank you
Failback only works when you run active / standby NIC. If you are running active-active, you can set the host mode maint, let it drain and then leave the mode maint to allow virtual machines to come back and live on some Teddy they land on.
With respect to the passage of the switch the riskier part is to make sure that you have all the VLAN defined on the 'new' switch and that there is a layer 3 path to the front door of this switch. When you migrate the first server I would put in mode now, put some DRS in manual mode and then make the transition. Then a vMotion machine virtual not essential (or 1 VM for each VIRTUAL local area network) on to this host to make sure that the installer of L2 and L3 works correctly. Make sure that the field of L2 on the old switches can talk to the L2 area on the new switches.
Ben
Tags: VMware
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NuttySquirrel wrote:
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