[Poweredgec-tools] BMC GUID

Les Begnaud LBegnaud at radersolutions.com
Mon Mar 17 14:18:18 CDT 2014

That's a great idea, Sven, but the issue is I don't know how to modify the mc guid.

In sure we could determine an internal way to uniquely identify our BMC... but I have yet to find any way to modify the BMC guid. I can modify the service tag, which changes the guid of the motherboard, but those are apparently different unique identifiers...

On Mar 17, 2014 12:00 PM, "poweredgec-tools-request at dell.com" <poweredgec-tools-request at dell.com> wrote:
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Today's Topics:

1. Re: BMC GUID (Sven Ulland)
2. C6220: "bmc Controller access degraded or unavailable
Deasserted" log and how to check FCB version in linux (n x)


Message: 1
Date: Mon, 17 Mar 2014 09:43:00 +0100
From: Sven Ulland <sveniu at opera.com><mailto:sveniu at opera.com>>
Subject: Re: [Poweredgec-tools] BMC GUID
To: <poweredgec-tools at dell.com><mailto:poweredgec-tools at dell.com>>
Message-ID: <5326B594.30507 at opera.com><mailto:5326B594.30507 at opera.com>>
Content-Type: text/plain; charset="windows-1252"; format=flowed

On 03/13/2014 07:03 PM, Les Begnaud wrote:
> I know that the motherboard GUID is based on the service tag of the
> node, but every one of our cloud servers have the same ?mc guid? for
> each node (we have 5 cloud servers)

Same here; the GUID varies only slightly between large sets (different
production runs, apparently) of C series servers. Globally unique,
indeed :)

An alternative is to construct a guid from the bmc lan port mac
address, obtained with 'ipmitool lan print', for example. Either hash
it with something like md5, or use a 10-byte prefix and tack the mac
address on at the end.



Message: 2
Date: Mon, 17 Mar 2014 17:36:34 +0100
From: n x <xn20131031 at gmail.com><mailto:xn20131031 at gmail.com>>
Subject: [Poweredgec-tools] C6220: "bmc Controller access degraded or
unavailable Deasserted" log and how to check FCB version in linux
To: <poweredgec-tools at dell.com><mailto:poweredgec-tools at dell.com>>
<CAMqZ+bYDsWRCrmi0yHd-HqhvWpZsGWX6M2ePyw4_zGHOLgdQfg at mail.gmail.com><mailto:CAMqZ+bYDsWRCrmi0yHd-HqhvWpZsGWX6M2ePyw4_zGHOLgdQfg at mail.gmail.com>>
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I have two questions about C6220, we use linux on all the machine.

1) After I used ipmi to shutdown some C6220 machines, they begin to give
plenty of "Controller access degraded or unavailable Deasserted" messages,
which makes sel log full quickly. I tried to update bios/bmc version to
2.25 to stop this kinds of warning, but on most of the machines, it didn't
solve this problem.
Any suggestions?

2) So I think to update the firmware of chassis(which is equal to fcb), but
I would like to know the version of FCB before I do theupdate. And I didn't
find how to check FCB version by command in linux? I don't want to check
the bios by reboot the machine because there are many machines, it is not
practic to do so.

Thanks in advance!

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