Dear Luca, I've created a config with two 16 port 10GBe switches,those does not connected to each other. I have 4 hosts and 1 storage host. I don't know why, but I can't ping from all of host to all of hosts. For example I can ping from .1 to .2 but not .3! From .3 I can ping .4 but don't .1 :) I don't know the cables how is connected to the switch, but I'm sure every host connected to switches whit two inferface (one-to-one) Thanks! Regards, Tibor ----- 2018. jan.. 26., 14:06, Luca remix_tj Lorenzetto lorenzetto.luca@gmail.com írta:
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@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@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@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@redhat.com> írta:
On Mon, Dec 11, 2017 at 12:53 PM, Demeter Tibor <tdemeter@itsmart.hu> wrote:
Hi,
Could help anyone for me in this question?
Thanks.
R.
Tibor
----- 2017. dec.. 6., 14:07, Demeter Tibor <tdemeter@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...
"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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-- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716)
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Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca@gmail.com>