June 28, 2017 Workflow review
Chengli Wang and Lingli Deng from China Mobile presented VoLTE use case. They went through the work flow for service design, instantiation, auto healing/auto scaling and termination. 31 Participants joined the meeting and discussion. The meeting recording can be accessed here: https://zoom.us/recording/play/zClGuWa2cFq-g3YEWC-sZ74V9iJaHAx2Iw7ePKuhh1q1ttjSSFXRyoJhYxpmk8bC
Meeting minutes:
At high level, there are edge and core data centers in the use case. EPC components split between edge and core data centers. Similarly IMS components also split between edge and core. A WAN network with underlay and overlay connects the two data center.
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2. Discussed the updated version of network diagram on wiki. Underlay network between two PEs is MPLS L3VPN; and from DC-GW to PE is VLAN. VXLAN overlay is set up between two DC-GWs by EVPN. VTEP is on DC-GW. DC-GW is controlled by SDN local controller provided by vendor.
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4. Discussed the solution that SDN local controller provides some APIs to map DC-side VXLAN with WAN-side VXLAN on DC-GW. Chengli will provide the SDN local controller APIs which CMCC used in its lab to set up VXLAN tunnel with EVPN. Based on that information, we will provide a diagram on wiki to illustrate how the VXLAN mapping is done.
5. MultiVIM project proposed to handle DC-GW through SDN local controller and expose APIs for ONAP to set up Depend on the interface and capability of SDN local controller, we will decide in the next meeting how modules (MultiVIM, Neutron, SDN local controller, SDN WAN controller, DC-GW) work together to provide VXLAN overlay between data centers via EVPN.
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