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> did you mean to say contrail with ML2 not ML3 ?

Should be ML3 since it provides layer 3 networking.

> I am not quite sure contrail integration but is ml3 available in icehouse yet ?

It is not.


From: Raghu Vadapalli [mailto:rvatspacket at gmail.com]
Sent: Monday, September 29, 2014 1:38 PM
To: NAPIERALA, MARIA H
Cc: dennisml at conversis.de; openstack at lists.openstack.org
Subject: Re: [Openstack] Rackspace abandons Open vSwitch ?



---
Raghu V. Vadapalli
Principal Software Architect
Smart Packet Solutions

On Monday, Sep 29, 2014 at 1:33 PM, NAPIERALAMARIA H <mn1921 at att.com<mailto:mn1921 at att.com>>, wrote:

On 27.09.2014 06:37, Jason Kölker wrote:
>> On Sat, Sep 27, 2014 at 3:50 AM, Raghu Vadapalli <rvatspac... at gmail.com<mailto:rvatspac... at gmail.com>>
>> wrote:
>>> As per this news article listed below, Rackspace is abandoning Open vSwitch.
>>> Is this where everyone else going in general ?
>>
>> That conclusion is inaccurate. The entirety of the public cloud runs
>> openvswitch for both public/servicenet connectivity as well as
>> isolated tenant network features.The article is referring to the
>> private cloud distribution no longer choosing to use the Neutron
>> OpenVswitch plugin
>> (https://github.com/openstack/neutron/tree/master/neutron/plugins/openvswitch)
>> as it is being deprecated. The ML2 plugin replaces this and can use a
>> variety of mechanisms including openvswitch.
>>
>> The article's conclusion that openvswitch is not ready for production
>> and high-volume workloads is ludicrous. Versions 2.0+ perform very
>> well with multithreading in the vswitchd process and megaflows in the
>> datapath. However it is important to point out that datapath
>> performance is very much related to the flows programmed. A poorly
>> written flow set will result in bad performance. Tuning the flows and
>> optimizing the ability for megaflow'ing is the key to high throughput.

> That's the theory though and the article seems to talk about practical
> problem Rackspace ran into with OVS so it would have been nice to learn
> what specifically was the problem.

> What are the alternatives though? As far as I know the regular linux
> bridge lacks most of the features of OVS and these are the only to
> options I've played with so far. Is the a third alternative out there
> that they've switched to?

One alternative is OpenContrail vRouter as ML3 plugin. It meets the scale and feature requirements.

Maria

​did you mean to say contrail with ML2 not ML3 ? I am not quite sure contrail integration but is ml3 available in icehouse yet ?


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