I have two HP DL 380 G8 servers with Windows server 2012 R2 OS. I have formed NIC teams by using Windows – built-in NIC teaming.
It Works perfectly but after a week or two teams stop working – the only mode to get server online again is to disable and re-enable physical network cards.
Server uses: HP Ethernet 1Gb 4-port 331FLR Adapter – I have upgraded firmware to latest version (that was available on 1.2.2015) and also updated drivers – but the problem persist.
For a current workaround I have scripted a powershell script that checks connectivity and cycle network adapters:
if (Test-Connection 8.8.8.8 -Count 1 -ErrorAction SilentlyContinue)
{
Add-Content C:watchdogresult.txt “`nUP”
}
else
{
Disable-NetAdapter -Name “Ethernet” -Confirm:$false
Enable-NetAdapter -Name “Ethernet”
Disable-NetAdapter -Name “Ethernet 2” -Confirm:$false
Enable-NetAdapter -Name “Ethernet 2”
Disable-NetAdapter -Name “Ethernet 3” -Confirm:$false
Enable-NetAdapter -Name “Ethernet 3”
Disable-NetAdapter -Name “Ethernet 4” -Confirm:$false
Enable-NetAdapter -Name “Ethernet 4”
$datenow = Get-Date
$datesult = “`n” + $datenow + ” Repaired”
$datesult | Add-Content C:watchdogresult.txt
}
Save as script.ps1
and create a task scheduler task with parameters:
Security options:
Run whether user is logged on or not
Run with highest privileges
Trigger:
Daily
Repeat every 5 minutes for 1 day
Action:
Start program: powershell
Add argument: -ExecutionPolicy bypass -file “C:watchdognet.ps1”
Your txt file should have similar entries – UP if network is working and Repaired with date and time if team failed and was repaired by scrpt:
UP
UP
UP
02/01/2015 12:25:49 Repaired
UP
UP
Do the VMs loose connectivity or the server itself? Have you perhaps tried disabling VMQ: Get-NetAdapterVmq | Disable-NetAdapterVmq
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