12:50 a.m.
Hi,
I had some questions a overt-provider-ovn based external network which is built on top of
an physical network. I notice that VLAN tagging gets greyed out when I try to create an
external provider network. Is it not supported by overt right now?I am on version 4.2.5.3.
Also, if I create NICs with the external provider network built atop a physical network on
VMs that are on different hosts, but the same cluster, I see they are unable to ping each
other, though it seems to work fine if they are on the same host. Is that elected
behaviour? Could you you please help me understand why?
Thanks,
Anurag
8:11 p.m.
On Tue, Aug 14, 2018 at 11:50 PM, Anurag Porripireddi
<anurag.porripireddi(a)bigswitch.com> wrote:
Hi,
I had some questions a overt-provider-ovn based external network which is built on top of
an physical network. I notice that VLAN tagging gets greyed out when I try to create an
external provider network. Is it not supported by overt right now?I am on version 4.2.5.3.
Also, if I create NICs with the external provider network built atop a physical network on
VMs that are on different hosts, but the same cluster, I see they are unable to ping each
other, though it seems to work fine if they are on the same host. Is that elected
behaviour? Could you you please help me understand why?
Currently, inter-host communication over an external network is only
supported *if* the cluster's switch type is OVS - could you confirm my
suspicion that the switch type of the cluster where you're creating
your VMs is indeed linux bridge?
You could achieve inter host communication in a linux bridge cluster
by specifying a pure overlay network - e.g. don't connect the external
network to a physical network.
Never-the-less, the 'correct' way would be to created both the
physical and the external network in another cluster, with switch type
OVS; which - AFAIK - is currently *not* recommended for production use
cases.
>
> Thanks,
> Anurag
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10:11 p.m.
New subject: Clarifications regarding ovirt-provider-ovn network
Well, you are right about that. My cluster's switch type is linux bridge. Regrding the
first question though, is VLAN tagging unsupported on external provider networks?
10:29 a.m.
On Thu, Aug 16, 2018 at 9:11 PM, <anurag.porripireddi(a)bigswitch.com> wrote:
Well, you are right about that. My cluster's switch type is linux
bridge. Regrding the first question though, is VLAN tagging unsupported on external
provider networks?
Yes, VLAN tagging is *not* supported on external provider networks.
The idea there is that you can create multiple isolated logical
networks in the external provider, providing the same functionality as
VLAN does.
You can though connect an external network to a VLAN tagged physical network.
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3 comments
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participants (3)
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Anurag Porripireddi -
anurag.porripireddi＠bigswitch.com
-
Miguel Duarte de Mora Barroso