[ovirt-users] [ovirt 3.6] Logical network not working

Marcin Mirecki mmirecki at redhat.com
Fri Sep 9 08:37:55 UTC 2016

Hello Luca,

The description of your setup seems to be correct.
Can you please disable firewalld and iptables just to make sure this is not the cause.
I'll try to recreate and see what the possible causes can be.


----- Original Message -----
> From: "Luca 'remix_tj' Lorenzetto" <lorenzetto.luca at gmail.com>
> To: users at ovirt.org
> Sent: Thursday, September 8, 2016 5:44:27 PM
> Subject: [ovirt-users] [ovirt 3.6] Logical network not working
> Hello,
> i'm new to ovirt and i did some months ago a setup of ovirt 3.6 for
> playing. My setup is composed by two physical hosts with 6 nic each
> and another machine hosting the engine. All hosts are running RHEL 7.2
> Setup went well, no problems. I've been able to convert the kvm image
> provided by redhat and have it running on ovirt.
> Then i decided to configure a new network in addition to the
> ovirtmgmt. I went to networks, i created the logical network called
> Development and set the flag "Enable VLAN Tagging" and inserted the
> vlan tag.
> Once created the logical network i went to each host and did setup
> network and assigned the logical network to the interface where the
> vlan is connected. The interface is configured with bootproto=none, so
> no IP has been assigned to the eno5.828 that appeared after assigning
> logical network.
> I started then a vm and connected to the vNIC "Develoment/Development"
> and assigned an IP. But networking is not working: no ping, no traffic
> visible with tcpdump.
> I tested the single interfaces on the hosts and where the logical
> network is connected with tcpdump (both eno5 and eno5.828) i see tons
> of broadcast traffic of that interface.
> With brctl-show i see that assigned to the bridge Development there
> are both eno5.828 and vnic0.
> Any way to understand what's happening and why traffic is not passing?
> Thank you
> Luca
> --
> "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)
> "Internet è la più grande biblioteca del mondo.
> Ma il problema è che i libri sono tutti sparsi sul pavimento"
> John Allen Paulos, Matematico (1945-vivente)
> Luca 'remix_tj' Lorenzetto, http://www.remixtj.net ,
> <lorenzetto.luca at gmail.com>
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