Residential CORD. Jonathan Hart, ONF. ONOS Build 2017, Seoul September 22, 2017
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1 Residential CORD Jonathan Hart, ONF ONOS Build 2017, Seoul September 22, 2017
2 Disaggregation vsg vrouter volt CPE ONU OLT ETH AGG BNG BNG Residence Switching Fabric Central Office Backbone Network CPE: Customer Premises Equipment ONU: Op#cal Network Unit OLT: Optical Line Termination BNG: Broadband Network Gateway 2
3 Residential CORD Service Composition in CORD ler (XOS) Residen#al Subscribers ler vg.fast ler volt ler ler vsg vrouter ler vcdn Blue: plane services running on ONOS Red: Dataplane services running on x86
4 Residential CORD Service CreaLon and OrchestraLon Plane VNFs as SDN apps AAA DHCP Relay CORD ler (XOS) volt Fabric vrouter SDN ler (ONOS Cluster) NETCONF OpenFlow 1.3 MulL-vendor ONT/ONUs & RG XGS-PON Whitebox OLT (EdgeCore) Bare-metal Open-source Leaf-Spine Fabric Spine Spine Spine Maple Maple QumranAX QumranAX ToR ToR ToR ToR ToR ToR ToR ToR Dataplane VNFs in Edge Compute VOLTHA VOLTHA CDN vsg CDN vsg Metro Routers 3rd Party Service VNFs
5 Disaggregating the OLT with VOLTHA 5
6 OLT Disaggregation volt AAA Mcast ONOS OpenFlow NetConf OpenFlow Agent NetConf OLT API volt Agent OMCI Stack GPON OLT L2/OMCI This is what we (the CORD community) accomplished as part of the R-CORD POCs 6 GPON OLT MAC (MicroSemi)
7 How to expand to support multiple vendors? How do we expand support for this so that many vendors can par#cipate and not have to rebuild the same volt agent stack while providing some abstrac#on to the control and management planes? volt ONOS AAA volt Mcast volt OpenFlow Config Calix volt Agent Ciena volt Agent Tibit volt Agent Nokia volt Agent Adtran volt Agent Calix OLT Ciena OLT Tibit OLT Nokia OLT Adtran OLT 7
8 Virtual OLT Hardware Abstraction (VOLTHA) VOLTHA hides PON-level details (T-CONT, GEM ports, OMCI etc.) from the SDN controller, and abstracts each PON as a pseudo-ethernet switch easily programmed by the SDN controller VOLTHA northbound VOLTHA core VOLTHA southbound adapters Envoy (REST) OpenFlow Agent NetConf agent global_handler dispatcher config_root grpc_server ka_a_client adapter_agent fluentd config_proxy consul registrator Calix Ciena ASFvOLT16 Tibit Nokia Adtran Common control and management framework shared by all OLTs &ONUs Calix OLT Ciena OLT Whitebox OLT (EdgeCore) 8 Tibit Micro-OLT Nokia OLT Adtran OLT
9 Virtual OLT with VOLTHA volt AAA OpenFlow Mcast DHCP IGMP ONOS VLAN provisioning, multicast, IGMP snooping/proxy, AAA NetConf Legacy control plane functions run as control apps on ONOS (802.1X, RADIUS), DHCP relay OF/Netconf OpenFlow voltha Core NetConf VOLTHA handles PON specifics and abstracts different HW ASFvOLT16 adapter uses BAL API to program device ASFvOLT16 adapter BAL API over grpc EdgeCore ASFvOLT16 Whitebox open HW (EdgeCore ASFvOLT16) 16 10G XGS-PON ports based on BRCM Maple chip 1x 100GBE Qumran AX switching chip 9
10 Disaggregating the BNG with vsg and vrouter 10
11 Virtual Subscriber Gateway (vsg) Subsumes per-subscriber functionality from CPE and BNG A separate vsg instance is create for each subscriber Runs as a container VNF Reference implementation is a simple Docker container running DHCP, DNS, NAT on behalf of each subscriber Many design options available regarding which functions get moved to vsg 11
12 Upstream Connectivity with vrouter CORD ler (XOS) AAA Fabric Mcast DHCP Relay vrouter SDN ler (ONOS Cluster) NETCONF OpenFlow 1.3 Spine Spine Spine Maple Maple QumranAX QumranAX ToR ToR ToR ToR ToR ToR ToR ToR OSPF/BGP VOLTHA VOLTHA CDN vsg CDN vsg Quagga Quagga Metro Routers
13 Roadmap Integrate VOLTHA into R-CORD Add automated deployment of volt and vrouter Investigate how to implement vsg functionality in programmable switches using P4 (e.g. QoS, PPPoE termination) Multi-access edge (R+M-CORD) 13
14 Conclusion R-CORD disaggregates residential broadband access using three main services: volt, vsg, vrouter Reference implementation uses completely open, commodity hardware Functions implemented in software as ONOS control apps or VNFs VOLTHA agent provides common abstraction across different OLT access hardware Pathway for fast path entirely in hardware 14
15 Thank you! Questions? 15
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