Dear all, I need your help to understand how to configure the network of a new oVirt cluster. My new system will have a 4.3 engine that runs in a virtual machine, and some Dell R7525 AMD EPYC hypervisors, each holding two 4-port PCI network cards. These servers will have node-ovirt image again in version 4.3. As for the network, there are two HPE Aruba 2540G, non-stackable, with 24 1Gbs ports and 2 10Gbs uplinks to the star center. This is a simplified scheme: My goal is to make the most of the server's 8 ethernet interfaces to have both reliability and maximum possible throughput. This cluster will have two virtual networks, one for ovirt management and one for the traffic of individual virtual machines. With that said here's what my idea is. I would like to have two links aggregated by 4Gbs, one for ovrtmgt and the other for vmnet. With the ovirt web interface I can create an active-passive "Mode 1" bond, but this won't allow me to go beyond 1Gbs. Alternatively I could create a "Mode 4" bond 802.3ad but unfortunately the switches are not stacked and therefore not even this solution applies. This is an example with active passive configuration: Can you tell me if ovirt can generate nested bonds? Or do you have other solutions ? Thanks a lot ! Best Regards Enrico -- _______________________________________________________________________ Enrico Becchetti Servizio di Calcolo e Reti Istituto Nazionale di Fisica Nucleare - Sezione di Perugia Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY) Phone:+39 075 5852777 Skype:enrico_becchetti Mail: Enrico.Becchetti<at>pg.infn.it Pagina web personale: https://www.pg.infn.it/home/enrico-becchetti/ ______________________________________________________________________

Dear all, I need your help to understand how to configure the network of a new oVirt cluster. My new system will have a 4.3 engine that runs in a virtual machine, and some Dell R7525 AMD EPYC hypervisors, each holding two 4-port PCI network cards. These servers will have node-ovirt image again in version 4.3. As for the network, there are two HPE Aruba 2540G, non-stackable, with 24 1Gbs ports and 2 10Gbs uplinks to the star center. This is a simplified scheme: My goal is to make the most of the server's 8 ethernet interfaces to have both reliability and maximum possible throughput. This cluster will have two virtual networks, one for ovirt management and one for the traffic of individual virtual machines. With that said here's what my idea is. I would like to have two links aggregated by 4Gbs, one for ovrtmgt and the other for vmnet. With the ovirt web interface I can create an active-passive "Mode 1" bond, but this won't allow me to go beyond 1Gbs. Alternatively I could create a "Mode 4" bond 802.3ad but unfortunately the switches are not stacked and therefore not even this solution applies. This is an example with active passive configuration: Can you tell me if ovirt can generate nested bonds? Or do you have other solutions ?

Thanks a lot ! Best Regards Enrico -- _______________________________________________________________________ Enrico Becchetti Servizio di Calcolo e Reti Istituto Nazionale di Fisica Nucleare - Sezione di Perugia Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY) Phone:+39 075 5852777 Skype:enrico_becchetti Mail: Enrico.Becchetti<at>pg.infn.it Pagina web personale: https://www.pg.infn.it/home/enrico-becchetti/ ______________________________________________________________________ _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/YZUTTTLTKRI...

Dear all, I've made this settings: after that reading /var/log/messages I've seen this: _Nov 10 08:01:06 infn-vm09 kernel: ovirtmgmt: received packet on bond0 with own address as source address (addr:68:05:ca:b9:72:2e, vlan:0)_ and when I run a virtual machine I've notice that ssh from my desktop is extremely slow and in some cases the ssh session is terminated, for example from my desktop: $ ssh -l enrico 1.1.1.1 X11 forwarding request failed on channel 0 Last login: Tue Nov 9 14:34:58 2021 from becchetti-pc [enrico@centos-7 ~]$ Connection reset by 1.1.1.1 port 22 likely that this bond has features that are not compatible with my network. Thanks again. Best regards Enrico Il 10/11/2021 07:42, Ales Musil ha scritto: Hi, On Tue, Nov 9, 2021 at 4:24 PM Enrico Becchetti <enrico.becchetti(a)pg.infn.it&gt; wrote: Dear all, I need your help to understand how to configure the network of a new oVirt cluster. My new system will have a 4.3 engine that runs in a virtual machine, and some Dell R7525 AMD EPYC hypervisors, each holding two 4-port PCI network cards. These servers will have node-ovirt image again in version 4.3. As for the network, there are two HPE Aruba 2540G, non-stackable, with 24 1Gbs ports and 2 10Gbs uplinks to the star center. This is a simplified scheme: My goal is to make the most of the server's 8 ethernet interfaces to have both reliability and maximum possible throughput. This cluster will have two virtual networks, one for ovirt management and one for the traffic of individual virtual machines. With that said here's what my idea is. I would like to have two links aggregated by 4Gbs, one for ovrtmgt and the other for vmnet. With the ovirt web interface I can create an active-passive "Mode 1" bond, but this won't allow me to go beyond 1Gbs. Alternatively I could create a "Mode 4" bond 802.3ad but unfortunately the switches are not stacked and therefore not even this solution applies. This is an example with active passive configuration: Can you tell me if ovirt can generate nested bonds? Or do you have other solutions ? No oVirt can't create nested bonds. This might be possible if created manually and then the network is assigned on top of that. However note that this was never tested and might not work at all. My guess would be that the oVirt UI would not be able to display it. As it was suggested by Strahil Nikolov, bond mode 2 might be the way to go. Best regards, Ales Thanks a lot ! Best Regards Enrico -- _______________________________________________________________________ Enrico Becchetti Servizio di Calcolo e Reti Istituto Nazionale di Fisica Nucleare - Sezione di Perugia Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY) Phone:+39 075 5852777 Skype:enrico_becchetti [1] Mail: Enrico.Becchetti<at>pg.infn.it [2] Pagina web personale: https://www.pg.infn.it/home/enrico-becchetti/ ______________________________________________________________________ _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/YZUTTTLTKRI... -- Ales Musil Software Engineer - RHV Network Red Hat EMEA [3] amusil(a)redhat.com IM: amusil [4]