Neutron FIP Qos with OVN Backend

Erlon Cruz sombrafam at
Fri Sep 24 11:50:00 UTC 2021

Hi folks,

I'm confused now. I have recently read that [1]:

"Currently the Neutron L3-agent supports floating IP and gateway IP
bandwidth limiting based on Linux TC. OVN L3 plugin supports floating IP
bandwidth limiting based on the OVN’s QoS rules. Neutron OVN backend does
not yet support bandwidth limiting for gateway IP"

So, QoS, especially FIP QoS is not present in OVN yet. I'm I missing
something? If it supports, what versions that was added?


Em qui., 23 de set. de 2021 às 08:37, Rodolfo Alonso Hernandez <
ralonsoh at> escreveu:

> Hello Ammad:
> This is not possible. You can create a default QoS policy that will apply
> to a network and thus to the internal ports created on this network.
> When you create a FIP, a port on the external network is created and this
> port receives a QoS policy (the default policy). However, the FIP QoS
> driver reads the *FIP QoS* policy, not the associated *FIP port QoS*
> policy. That means, for now, what you need is not possible.
> Regards.
> On Thu, Sep 23, 2021 at 1:14 PM Slawek Kaplonski <skaplons at>
> wrote:
>> Hi,
>> On czwartek, 23 września 2021 12:33:13 CEST Ammad Syed wrote:
>> > Hello,
>> >
>> > I am using Neutron wallaby with OVN backend. I am testing QoS FIP and it
>> > works fine.
>> >
>> > I have created a QoS policy and attached it with FIP, It works fine. Is
>> it
>> > possible to set one of the QoS policy as default that each time I
>> acquire a
>> > floating IP, the QoS should be attached to it by default ?
>> >
>> > Ammad
>> You can mark QoS policy as default for the project: https://
>> detail#qos-default-extension
>> <>
>> But TBH I'm not sure if that will work with FIPs - You should test it and
>> if
>> that will not work, probably You can open bug for Neutron about that :)
>> --
>> Slawek Kaplonski
>> Principal Software Engineer
>> Red Hat
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