Telco use cases do require a multiple-tier NFVi Point of Presence (PoP) or Central Office (CO) or Mobile Switching Center/Office (MSC/MSO) a.k.a micro DC severely constrained in:
Minimal upfront cost Control vs. Compute foot print. Centralized operation/maintenance (includes Upgrades)
From connectivity standpoint, telcos can provide guaranteed bandwidth and latency between Main DC and the micro DC.
This requirement basically asks for RHOSP to support:
1. Deploying a compute node over WAN: Need not be through PXE booting using OSPd or image transfer. It can be bringing up a preinstalled compute node talking to the main DC controllers.
2. Support inter-service communication between compute and controller to ensure OpenStack service do not error out. It is safe to assume that the infrastructure provides l2 connectivity between controller and remote compute nodes, enough bw (upto 2Gbps) and latency <2ms.
3. A micro DC can be as simple as a single server. The idea is that the server will be an OpenStack host where the OpenStack control entities reside in the central DC. This implies a distributed OpenStack instance where the control is in one location and some of the OpenStack hosts are remote.
4. The main difference is for the networking part. For that it is suggested using the Neutron ODL plugin. HPE OpenSDN, implementing a Neutron ODL plugin addresses these issues.
5. The solution is fully managed from the central DC. As an example, a user can choose to instantiate a new VNF on one of the remote OpenStack hosts. Thus a VM image from the central DC will spawned on the remote OpenStack host.
6. Sometimes the remote location isn't easily accessible to the carrier technical team. Need to be be able to support (e.g. upgrade, install patches) the remote OpenStack host without accessing the actual server (remote support).
Created attachment 1239346 [details]
Graphical representation of scenario and requirement
This is related to multi-site, adding the proper PM in the loop
This won't be ready for RHOSP12, flagging for RHOSP13 tentatively , to be reassess when scoping RHOSP13.
Obsolete RFE. DCN has been delivered.