IPMI on localhost

[Jonathan S. Billings]

On Wed, 2007-03-21 at 09:56 -0700, Kilian CAVALOTTI wrote:
> But I'm very curious to know why the LAN protocol doesn't work in this 
> case. Since the BMC and the OS's network interface have two different MAC 
> addresses, they should be considered by the switch as two different 
> network devices, right? 
> 
> So an IPMI request issued from the OS network interface (macA) to the BMC 
> (macB) should be sent to the switch, which knows that macA and macB are on 
> the same port (I checked that), so it should forward the IPMI packets back 
> to the the same port they're coming from, where the BMC should catch them, 
> since they're bound for macB, shouldn't it?

I believe most BMCs are designed so you can't talk to the BMC through an
out-of-band interface, such as the LAN.  Most likely, the BMC never even
sees the packets, by design.
-- 
Jonathan Billings <jsbillin at princeton.edu>
Computational Science and Engineering Support (CSES)
http://www.princeton.edu/~cses/