[ovirt-users] bonding mode-alb

[Luca 'remix_tj' Lorenzetto]

Hi Demeter,

i don't know how the switch setup is done here, but as far as i know
they aren't stacked through interconnect.

Luca

On Fri, Jan 26, 2018 at 1:44 PM, Demeter Tibor <tdemeter at itsmart.hu> wrote:
> Dear Luca,
>
> Sorry for the very late reply..
>
> I want to try out now your mentions.
> Should I make an interconnect the two switches in active/backup mode?
> Thanks!
>
> Tibor
>
> ----- 2017. dec.. 12., 19:35, Luca 'remix_tj' Lorenzetto
> <lorenzetto.luca at gmail.com> írta:
>
> 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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>>
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>



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Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca at gmail.com>