Posted by I previously posted a script on how to change a distributed switch’s default settings. I’ve updated it to work on vSphere 5.5 and made some other improvements.
$vDSName = '' # Enter the name of the vDS here
$loadBalancingPolicy = 'loadbalance_ip' # IP hash
$numActiveUplinkPorts = 2
$activeUplinkNames = @('Uplink 1', 'Uplink 2')
$vds = Get-VDSwitch $vDSName
$spec = New-Object VMware.Vim.DVSConfigSpec
$spec.configVersion = $vds.ExtensionData.Config.ConfigVersion
$spec.defaultPortConfig = New-Object VMware.Vim.VMwareDVSPortSetting
$uplinkTeamingPolicy = New-Object VMware.Vim.VmwareUplinkPortTeamingPolicy
# Set load balancing policy to IP hash
$uplinkTeamingPolicy.policy = New-Object VMware.Vim.StringPolicy
$uplinkTeamingPolicy.policy.inherited = $false
$uplinkTeamingPolicy.policy.value = $loadBalancingPolicy
# Configure uplinks. If an uplink is not specified, it is placed into the ‘Unused Uplinks’ section.
$uplinkTeamingPolicy.uplinkPortOrder = New-Object VMware.Vim.VMwareUplinkPortOrderPolicy
$uplinkTeamingPolicy.uplinkPortOrder.inherited = $false
$uplinkTeamingPolicy.uplinkPortOrder.activeUplinkPort = New-Object System.String[] ($numActiveUplinkPorts)
for ($i = 0; $i -lt $activeUplinkNames.length; $i++) {
$uplinkTeamingPolicy.uplinkPortOrder.activeUplinkPort[$i] = $activeUplinkNames[$i]
}
# Set notify switches to true
$uplinkTeamingPolicy.notifySwitches = New-Object VMware.Vim.BoolPolicy
$uplinkTeamingPolicy.notifySwitches.inherited = $false
$uplinkTeamingPolicy.notifySwitches.value = $true
# Set to failback to true
$uplinkTeamingPolicy.rollingOrder = New-Object VMware.Vim.BoolPolicy
$uplinkTeamingPolicy.rollingOrder.inherited = $false
$uplinkTeamingPolicy.rollingOrder.value = $true
# Set network failover detection to “link status only”
$uplinkTeamingPolicy.failureCriteria = New-Object VMware.Vim.DVSFailureCriteria
$uplinkTeamingPolicy.failureCriteria.inherited = $false
$uplinkTeamingPolicy.failureCriteria.checkBeacon = New-Object VMware.Vim.BoolPolicy
$uplinkTeamingPolicy.failureCriteria.checkBeacon.inherited = $false
$uplinkTeamingPolicy.failureCriteria.checkBeacon.value = $false
$spec.DefaultPortConfig.UplinkTeamingPolicy = $uplinkTeamingPolicy
$vds.ExtensionData.ReconfigureDvs_Task($spec)
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