Fujitsu ServerView Operations Manager showing Link Up/Link Down alerts in every one or two minutes for Windows Server

When you manage your Fujitsu PRIMERGY servers running Windows Server with ServerView Agents, you sometimes see a lot of "Link Up/Link Down" alerts in ServerView Operations Manager like the following screenshot:

In this case, check what interface is reporting the link problem. In the above example, it shows "Communication link failed at the station 15.", so the interface index you should check is 15. In most cases, it is "Teredo Tunneling Interface".

Log in to the Windows Server system, and bring up a command prompt. Run the following commands to find out the interface:

C:\> netsh interface ipv4 show interfaces
C:\> netsh interface ipv6 show interfaces

In the above, the interface index 15 is "Teredo Tunneling Pseudo-Interface", so if you don't need this, disable it.

C:\> netsh interface teredo set state disable

This should stop the frequent up/down events in SVOM. If you see this for an interface other than "Teredo Tunneling Pseudo Interface", you probably have a real connection issue.