IPMI goes offline after powering up machine

ipmisupermicro

Just got a Supermicro X7SPE-HF-D525 and it's my first time trying IPMI. I can connect to the IPMI web interface and use IPMIView to connect, but as soon as I power up the machine, I lose connection (and can't ping the IP anymore). Am I missing something? The firmware I found on SuperMicro's site is the same number (255) as what the web interface says is installed.

One thing in my BIOS that doesn't match the manual, is I can't find a "*" next to any of the COM ports.

Make sure that the COM port for SOL (COM2 or COM3) is enabled (marked 4.
with "*"). If not, Select the port for SOL and press . (For IPMI
to work properly, the BIOS will set the console redirection on this port by
default.)

Best Answer

It looks like your machine comes with Integrated IPMI. This means that your BMC may be configured to use either the dedicated IPMI port on the back of the machine, or it may share IPMI with one of the existing LAN ports (This is called sideband).

Read the manual, and make sure that your system is configured to use either dedicated IPMI (This is my preference) or IPMI sideband. Make sure it is what you expect it to be.

The Supermicro BMC sometimes tries to autodetect the IPMI port, and sometimes makes the wrong decision. I've actually had to do the following to get IPMI working:

  1. Configure IPMI to use either dedicated IPMI or sideband IPMI.

  2. (This is the tricky part) Unplug power from the machine. Let the capacitors bleed. Simply powering off the machine is not sufficient, since IPMI is intended to work when your machine is powered off. In fact, Embedded_BMC_IPMI.pdf says:

    Note 1: If you wish to use the IPMI-dedicated LAN port for your network connections, be sure to connect an RJ45 cable to your dedicated LAN port before you activate the BMC (at fi rst power-on or cold reset). Otherwise, the BMC will look for a shared LAN port to connect to if the IPMI-dedicated LAN cable is not detected upon BMC activation.

  3. Plug in an ethernet cable into the correct IPMI port. The link layer must be active-- the other end must be plugged into an active port on your network switch. e.g. Electrons must be flowing over the wire, so that the BMC can detect an active link.

  4. Power the machine back on.
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