[ovirt-users] bonding mode-alb

[Luca 'remix_tj' Lorenzetto]

Hi,

If you're looking at a simple ha bonding setup, why not using active-backup
(mode 1)?

We're using it in almost all our setups and switches toin backup interface
in 100ms when a link down is detected (Setting miimon=100).

Doesn't aggregate bandwidth but is a very good solution for high
availability whwn you can't configure lacp or a portchannel on switch side.

Luca


Il 12 dic 2017 7:06 PM, "Demeter Tibor" <tdemeter at itsmart.hu> ha scritto:

> Hi,
>
> Thanks for the answers.
>
> In this case the only question is: what is better for me? Mode 5 or 6?
> In which modes how is fast the switching?
>
> Until now I've use 802.3ad lacp on our old cluster. I did some tests and
> it was very fast. I know it is not same, but mode 5 or 6 how is safe?
> Thanks
>
> Regards,
>
> Tibor
>
>
>
> ----- 2017. dec.. 11., 13:24, Simone Tiraboschi <stirabos at redhat.com>
> írta:
>
>
>
> On Mon, Dec 11, 2017 at 12:53 PM, Demeter Tibor <tdemeter at itsmart.hu>
> wrote:
>
>> Hi,
>>
>> Could help anyone for me in this question?
>>
> Thanks.
>>
>> R.
>>
>> Tibor
>>
>>
>>
>> ----- 2017. dec.. 6., 14:07, Demeter Tibor <tdemeter at itsmart.hu> írta:
>>
>> Dear members,
>>
>> I would like to use two switch to make high-availability network
>> connection for my nfs storage.
>> Unfortunately, these switches does not support 802.3.ad lacp, (really I
>> can't stack them)  but I've read about mode-alb and mode-tlb bonding
>> modes.
>> I know,these modes are available in ovirt, but how is work that? Also how
>> is safe? Are there for HA or for load balance?
>>
>> I've read some forums, where does not recommended these modes to use in
>> ovirt. What is the truths?
>> I would like to use only for storage-traffic, it will be separated from
>> other network traffic. I have two 10Gbe switches and two 10Gbe ports in my
>> nodes.
>>
>>
> Look here:
> https://www.ovirt.org/documentation/admin-guide/
> chap-Logical_Networks/#bonds-1
>
> "Important: 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.¨
>
> So both tlb (mode 5) or alb (mode 6) are fine only if you use them just
> for the storage access but not for VMs.
>
>
>> Thanks in advance,
>>
>> R
>>
>> Tibor
>>
>>
>>
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