"ignore booting" and failover?

[Drew Weaver]

Have you ever used a Server before?

A BMC is a baseboard management controller it is used to perform system management tasks out of band such as IPMI, etc.

While a server with a BMC is booting up it will say 'Press CTRL-[something]' to configure the baseboard management controller.

Simply assign a fake static IP to it so it will stop trying to get a IP from DHCP.

By default it comes with a 192.168.x.x IP assigned to it from Dell so someone there (you or one of your "colleagues") must have told it to use DHCP.

I'm not sure why it's a "#"!?** Dell server" when its doing exactly what you told it to do.

-Drew


-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf Of Tina Siegenthaler
Sent: Friday, October 24, 2008 7:09 AM
To: dhcp-users at isc.org
Subject: "ignore booting" and failover?

Hi list

I've been having this problem for some time, asked this list already
once, tried different things - now I was able to nearly solve it, but
not entirely... so I'm asking again (sorry).

We have this #"!?** Dell server which insist on sending DISCOVERS
every minute or so on some virtual interface / MAC address ("BMC"),
but we never found out how to disable that. These DISCOVERS are
cluttering our dhcp.log, so we'd like to just ignore them and - very
important - not to log them, but we don't want to give that MAC
address a valid IP. I added "ignore booting" to the host statement of
that MAC address, and now at least one of our failover peers indeed
ignores that client (and also logs nothing). But the other peer still
logs them with this line:

Oct 24 12:50:25 DHCP-0339 dhcpd: DHCPDISCOVER from 00:14:22:72:6d:cb
via 130.60.145.1: load balance to peer DHCP-Zool

Hmph. Nearly there, but not entirely. How can I get rid of these, too?
Ideas?
We used to use some workaround, giving that MAC an IP but with an
invalid router address so that it couldn't do anything, but this still
eats up one valid IP which is not ideal...

TIA, Tina




**********************************************
Dr. Tina Siegenthaler

IT support

Institute of Zoology
University of Zurich
Winterthurerstr. 190
8057 Zürich

tel : ++41 44 6354891
email: tina at zool.uzh.ch
**********************************************