Hi.
I used iper3 for testing. It happened only with geneve and vxlan. I can get full bandwidth with vlan.

My env:

Openstack 2025.1
Kolla Ansible master-2025.1
Ubuntu 24.04 with uplink 25gbps x 2 for bonding, lacp 802.3ad, layer3+4

Noticed: I used distributed floating IP for my system. I tried without distributed floating IP and got the same result. 

Nguyen Huu Khoi


On Mon, Apr 28, 2025 at 11:15 PM James Denton <james.denton@rackspace.com> wrote:

What is your testing methodology? Is it iPerf? Trex? Something you can share so we might recreate and compare on our side?

 

-- 

James Denton

Principal Architect

Rackspace Private Cloud - OpenStack

james.denton@rackspace.com

 

From: Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com>
Date: Monday, April 28, 2025 at 7:28 AM
To: OpenStack Discuss <openstack-discuss@lists.openstack.org>
Subject: Re: [neutron][ovn] both vxlan and geneve cannot get full bandwidth

CAUTION: This message originated externally, please use caution when clicking on links or opening attachments!

 

Hello.

Could I have some ideas on it please?

Nguyen Huu Khoi

 

 

On Thu, Apr 17, 2025 at 9:53 PM Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com> wrote:

Hello.

 

I am going with ovn for my system but when I use vxlan and geneve, my instance cannot get full bandwidth(12 gbps)-instance to instance with private network. It is ok if I use vlan or floating ip for instances.

 

My env:

 

Openstack 2025.1

Kolla Ansible master-2025.1

Ubuntu 22.04 with uplink 25gbps x 2 for bonding, lacp 802.3ad, layer3+4

 

 

Ps give me some points.

 

Thank

 

Nguyen Huu Khoi