[dev][Tacker] Implementing Multisite VNFFG

nicolas at lrasc.fr nicolas at lrasc.fr
Fri Jan 11 14:28:12 UTC 2019

Hi all,
First, I am not involved in tacker or in networking-sfc, so I can be

Just to be sure by 'multiple VIM' you mean multi domains, multi
systems, multi OpenStack/VNFinfra sites that are all different?

When it comes to VNFFG over multiple VIM, I think a question is: what
does the 
networking-sfc driver already support?

Some other questions:
1. In a single VIM situation, does the networking-sfc driver support
(or port chaining) over multiple different IP subnets? 
2. Does networking-sfc support both IPv4 and IPv6?
3. What routing/steering protocol (NSH, SRv6) does networking-sfc
4. How healthy (or up to date) is the development of networking-sfc?

I think modifying tacker (or modifying any other VNF Orchestrator that
plugged to an OpenStack VIM with networking-sfc driver installed) alone
is not
enough. Maybe VNFFG over multiple VIM needs an SDN controller, maybe it
new feature in the networking-sfc driver or new features in neutron...


On 2019-01-11 12:31, Dharmendra Kushwaha wrote:

> Dear Lee, 
> Good point & Thanks for the proposal. 
> Currently no ongoing activity on that. And That will be great help if you lead this feature enhancement. 
> Feel free to join Tacker weekly meeting with some initial drafts. 
> Thanks & Regards 
> Dharmendra Kushwaha 
> FROM: 이호찬 [mailto:ghcks1000 at gmail.com] 
> SENT: 10 January 2019 13:21
> TO: openstack-discuss at lists.openstack.org
> SUBJECT: [dev][Tacker] Implementing Multisite VNFFG 
> Dear Tacker folks, 
> Hello, I'm interested in implementing multisite VNFFG in Tacker project. 
> As far as I know, current single Tacker controller can manage multiple Openstack sites (Multisite VIM), but it can create VNFFG in only singlesite, so it can't create VNFFG across multisite. I think if multisite VNFFG is possible, tacker can have more flexibility in managing VNF and VNFFG. 
> In the current tacker, networking-sfc driver is used to support VNFFG, and networking-sfc uses port chaining to construct service chain. So, I think extending current port chaining in singleiste to multisite can be one solution. 
> Is there development process about multisite VNFFG in tacker project? Otherwise, I wonder that tacker is interested in this feature. I want to develop this feature for Tacker project if I can. 
> Yours sincerely, 
> Hochan Lee.
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