[ovirt-users] Why not bond0

[Dan Kenigsberg]

On Thu, Jun 04, 2015 at 04:12:01PM +0800, 肖力 wrote:
> Can you tell me:
> 
> virtual machine (bridged) and non-virtual machine (bridgeless) 
> Difference in detail? tks!
> 
> 
> 
> 在 2015-06-04 13:36:13，"Michael Burman" <mburman at redhat.com> 写道：
> >Hi,
> >
> >Create a bond via Setup Networks >> From the Bonding Mode list choose 'custom' >> in the new 'Custom Mode' layout enter -->  mode=0 miimon=100 and approve operation.
> >You can't choose bond0 from the list but you can create custom bond modes 0, 3 and 6 as explained above ^^
> >
> >Kind regards,
> >Michael
> >
> >----- Original Message -----
> >From: "肖力" <exiaoli at 163.com>
> >To: "Dan Kenigsberg" <danken at redhat.com>
> >Cc: users at ovirt.org
> >Sent: Thursday, June 4, 2015 5:11:07 AM
> >Subject: Re: [ovirt-users] Why not bond0
> >
> >
> >I confused about bond mode. 
> >I read from RHEV document: 
> >Modes 1, 2, 3 and 4 support both virtual machine (bridged) and non-virtual machine (bridgeless) network types. Modes 0, 5 and 6 support non-virtual machine (bridgeless) networks only. 
> >And in oVirt i can not choice bond mode 0 ,but can choice bond mode 5. 
> >But in my host , i use bond mode 0 two years, It is work fine. 
> >Can someone explain this,thk! 

Which network was defined on your bond mode 0 for two years? Was it a VM
network? Or did have some other role?

mode 0 may work for VM networks by accident. But it is not to be used. I
can only share jpirko words again:
https://bugzilla.redhat.com/show_bug.cgi?id=1094842#c0

    Do not use tlb or alb in bridge, never! It does not work, that's it. The
    reason is it mangles source macs in xmit frames and arps. When it is possible,
    just use mode 4 (lacp). That should be always possible because all enterprise
    switches support that. Generally, for 99% of use cases, you *should* use mode
    4. There is no reason to use other modes.