Innovative NFV Service-Slicing Solution Powered by DPDK
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1 DPDK Summit USA 2016 Innovative NFV Service-Slicing Solution Powered by DPDK Hayato Momma Advanced Technologist (Software) / Principal Engineer (Senior Manager Class) 1 st Software Development Division NEC Communication Systems, Ltd.
2
3 Who am I? Hayato Momma Principal Engineer (Senior Manager Class) at NEC Communication Systems, Ltd. Works for Many Carrier Grade Linux Systems: kernel and any other software engineer Carrier SIP Nodes, 3G/4G Mobile Core Nodes (xgsn, EPC), vcpe/vbras, and so on DPDK-OVS (OVDK) as CGHV-VS (Carrier Grade Hyper-Visor Virtual Switch) Little contributor (as old address DPDK: Reviewed (memnic) DPDK-OVS: Reviewed, Signed-Off Linux Networking: Reviewed (ixgbe) 3 NEC Communication Systems, Ltd. 2016
4 DPDK in NFV ~ 1st NFV Era with DPDK~ NFV: Network Functions Virtualisation
5 DPDK in NFV opened a new era 5 NEC Communication Systems, Ltd. 2016
6 World s 1st commercial VNFs NEC launched the World s 1st commercial vepc (Oct. 2013), vmvno-gw (Feb. 2014) and pre-commercial vcpe (Jun. 2016) 6 NEC Communication Systems, Ltd. 2016
7 NFV requests Software Server Virtualized Packet-forwarding functions powered by DPDK HSS ISP PCRF MME S-GW EPC P-GW LTE enodeb EPC : Evolved Packet Core LTE : Long Term Evolution PDN : Packet Domain Network ISP : Internet Service Provider MME : Mobility Management Entity S-GW : Serving Gateway P-GW : PDN Gateway HSS : Home Subscriber Server PCRF : Policy and Charging Enforcement Function Control-Plane (Signaling) User-Plane (User Data) 7 NEC Communication Systems, Ltd. 2016
8 Hard days NFV not yet understand People in telecom carrier operators and even vendors were negative against to virtualization, especially data plane nodes. Application Middle Ware OS ATCA SBC + + Application Middle Ware Guest OS Hypervisor Host OS IA Server ATCA: Advanced Telecom Computing Architecture 8 NEC Communication Systems, Ltd. 2016
9 Hard days Finding missing packets Performance target: Lossless 2Mpps at 512B (User) per 10G port (close to wire rate) Mostly went well, but sometimes massive loss occurred Why packets lost? Try and Error Set processor affinity done by DPDK Power Management set to disabled still occurred Guess why? 2Mpps -> if PMD stopped 10msec, RX 20K packets will be not handled -> Massive loss! Probably due to VM_exit Got ftrace log on the host. (cont d) 9 NEC Communication Systems, Ltd. 2016
10 Hard days Finding missing packets Root cause was, Someone typed ls on the host! We were aware pinning on the GUEST, But we forgot pinning on the HOST set processor affinity on the host for all of hypervisor threads set isolcpus parameter on the host loader to isolate hyper-visor threads from others And so on, we achieved goal with good performance for user data nodes by NFV! The Moment NEC got confident NFV is really possible! Finally, we could launched NFV product at 1st in the World 10 NEC Communication Systems, Ltd. 2016
11 Service Slicing Gateway ~ Ready for 5G/IoT Era with DPDK ~
12 TODAY: IoT era is coming IoT/M2M presents a different set of requirements for existing Mobile-Core-Network Smart Meter / Home Electronics Security Transportation Logistics POS / Vending Machine Government / Public Service 12 NEC Communication Systems, Ltd. 2016
13 Service Slicing Separates IoT/M2M traffic from the other traffic General Service IoT Service Can be isolated from IoT traffic "Noise" PCRF EPC EPC PCRF Can optimize to IoT traffic profile EPC for General purpose Slice- GW EPC for IoT purpose 13 NEC Communication Systems, Ltd. 2016
14 Service Slicing Gateway 'Service-Slicing-Gateway' realizes the IoT-service-slicing Can Flexible Service Slicing Service Slicing Gateway Data base Re-route and forward based on Control Plane data General Core(s) IoT Core Slices Smart Meter / Home Electronics Transportation Government / Public Service Logistics Security POS / Vending Machine 14 NEC Communication Systems, Ltd. 2016
15 Why DPDK?
16 Why DPDK? Need Massive Traffic Capacity Mobile Core Nodes can scale OUT Increase Nodes But Load balancer or Slicer is needed to scale UP Increase Ports & Link Aggregation NFV requests built with Software servers Forwarding Function : Fastpath with DPDK DPI Function : Software DPI Engine 16 NEC Communication Systems, Ltd. 2016
17 We chose DPDK NEC foresaw that virtualization is necessity. We chose DPDK. We ve contributed to DPDK. We are grateful to all the relevant, and we hope DPDK community continues growing up. 17 NEC Communication Systems, Ltd. 2016
18 Thank you very much If you have any questions, please contact: Hayato Momma
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