IPMI and Dell ERA/O
rb at gid.co.uk
Fri Aug 29 09:04:06 UTC 2008
On 29 Aug 2008, at 08:44, Jeremy Chadwick wrote:
> [...]That said, the feature you're referring to (IPMI piggybacking
> on top of
> an existing NIC on the mainboard) is called "ASF" from a NIC driver
In implementations I've looked at, the interfaces really are distinct
hardware but they use a common phy. It's just about transparent to
> The NIC driver for the OS *must* have full awareness of
> said piggybacking, and if it doesn't, a couple different things can
> a) NIC simply does not work
> b) NIC works, but behaves oddly -- usually this is tracked down to
> the local network seeing the MAC address continually change for
> the IP address associated with the machine
That might just be be misconfiguration: the IPMI interface should have
an IP address distinct from (any address of) the 'proper' interface.
> c) NIC works, but IPMI and other features do not work
> There are a couple different drivers for FreeBSD which have ASF
> knowledge; bge(4) does, and I believe em(4) does (I could be wrong
em(4) does indeed work, we are using it on a couple of dozen boxes.
> bge(4) has a loader.conf tunable that tells the driver to
> understand ASF or not.
> In general, it's horrible, and I feel sorry for driver authors
> having to
> deal with it.
The only problem I have seen on em is that by default the driver
resets the phy during boot which confuses IPMI; if a SOL console
session is active, the driver is signalled not to do the reset.
> | Jeremy Chadwick jdc at parodius.com |
> | Parodius Networking http://www.parodius.com/ |
> | UNIX Systems Administrator Mountain View, CA, USA |
> | Making life hard for others since 1977. PGP: 4BD6C0CB |
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rb at gid.co.uk
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