Switch up eth0 and eth1 to BMC shared and dedicated resp. ( Zaius )

[Rob Lippert]

On Fri, Jun 9, 2017 at 10:03 AM, Adriana Kobylak <anoo at us.ibm.com> wrote:
> Looping in the community for feedback.
>
>
>
> ----- Original message -----
> From: Adi Gangidi <adi.gangidi at rackspace.com>
> To: "anoo at us.ibm.com" <anoo at us.ibm.com>, Kenneth Wilke
> <kenneth.wilke at RACKSPACE.COM>, Brad DeBauche <brad.debauche at RACKSPACE.COM>,
> Chad Somerlot <chad.somerlot at RACKSPACE.COM>, "abarrera at us.ibm.com"
> <abarrera at us.ibm.com>, "ryan.dc.yu at foxconn.com" <ryan.dc.yu at foxconn.com>,
> "Rob Lippert" <rlippert at google.com>
> Cc:
> Subject: Re: Switch up eth0 and eth1 to BMC shared and dedicated resp. (
> Zaius )
> Date: Fri, Jun 9, 2017 10:30 AM
>
> Sorry for couple of typo below, corrected them now.
>
> Please read again if it didn't make sense before.
>
> -Adi
> ________________________________________
> From: Adi Gangidi
> Sent: Friday, June 9, 2017 10:06 AM
> To: anoo at us.ibm.com; Kenneth Wilke; Brad DeBauche; Chad Somerlot;
> abarrera at us.ibm.com; ryan.dc.yu at foxconn.com; Rob Lippert
> Subject: Switch up eth0 and eth1 to BMC shared and dedicated resp. ( Zaius )
>
> Hi Adriana /.  Ryan ( Foxconn )
>
> Right now on openBMC
> BMC Shared      = eth0
> BMC Dedicated = eth1
>
>
> Instead, Is there a way we can make sure the BMC dedicated comes up as eth0
> and BMC shared link comes up as eth1, in Zaius / Barreleye G2 ?
>
>
> In how it works currently . you could have BMC dedicated be eth0 or eth1
> depending upon the hardware config ( Whether or not Broadcom 5719A is popped
> OR de-popped ) . That could confusing to support operators who don't
> understand the nuances .

The eth0 and eth1 on the BMC map to the BMC hardware MAC unit #.  On
Zaius MAC1 is connected to various NC-SI stuff and MAC2 is connected
to the dedicated BMC MAC.

So the eth numbers should not move around even if there is nothing
connected on the other end of eth0.  The only way the dedicated BMC
MAC MAC2 would become eth0 should be if the devtree entry for BMC MAC1
was removed.

-Rob

>
> If you guys are busy with other things to make the change  , can I have your
> thoughts on if this can be changed ? I'm guessing this is a u-boot change .
> Any thoughts on how we could make this change ourselves ?
>
> -Adi
>
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