X-Ethernet Ethernet Everywhere
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1 thernet thernet verywhere Network Technology Lab of 2012 Labs
2 A Unified thernet Network thernet verywhere Broadband DC Service Latency jitter CPRI <100us ns CP Metro Network Inter-site CoMP 250us -- nterprise Router Router Router Smart Grid <5ms (<500km) +-10us Industry4.0 ns ~ ms Low jitter Router Fronthaul / Backhaul BBU Low latency S1 < 1ms -- thernet All thernet Standard, perfect interoperability Mature ecosystem, lost cost But difficult to support some new Apps Ultra-Low Latency Requirement New emerging service Different level of latency requirement Beyond packet latency / jitter capability 2
3 PHY D slot 19 PHY D slot 0 PHY C slot 19 PHY C slot 0 PHY B slot 19 PHY B slot 0 PHY A slot 19 PHY A slot 0 Flexthernet Use Cases Scenario1: Sub rate MAC Flex SHIM PHY Programmability Length 20n Master Calendar Scenario2:Channelized MAC MAC Flex SHIM PHY Isolation Scenario2: Channelized thernet is used for slicing. ach port has 20 channels at maximum. Minimum channel band is 1/20 port band. Scenario3: Bonding MAC Flex SHIM PHY PHY Flexibility 3
4 Flexthernet Implementation PCS Upper 64/66B ncode 64/66B ncode 64/66B ncode 64/66B ncode Client-a Client-b Client-x Client-y Flex Shim Slot Num a b b x a PCS Lower Scramble Scramble Scramble PMA / PMD PHY 1 PHY 2 PHY n 100G 100G 100G 4
5 What is thernet xpanded Applications NG DCN On-line AR/VR AI X-haul (Front haul + Back haul) xtremely Low Latency PCS layer switching Loss Less (no buffer reason Loss) xtremely Deterministic Latency Forwarding Based On Bit Block Deterministic Performance thernet verywhere Network Hard Slicing physical layer traffic isolation xtremely Simple Maintenance Auto Discovery, Auto Configuration Simplified Strong OAM thernet-compatible operation knowledge Hybrid Multiplexing hard pipe statistic multiplexing xtremely High Speed/Density High Level Modulation + FC Flexible Multi-Rate Channelized, Pipelined, Fast Hitless Resizing/Reconfiguration thernet is a technology set we are engaged in; Main purpose of thernet is resolving deterministic ultra-low latency challenge; 5
6 thernet thernet Forwarding Better Deterministic ffect Application Presentation Session TCP Windowing Flow Control Packet Retransmission Address Lookup Packet Forwarding Routing 2 Store-Forward Line Coding Switching 1 Framing FC Bits Frames Segments Packets Data Less Latency L7 L6 L5 L4 L3 L2 L1 L0 Application Presentation Session Transport Network Data Link Physical Medium IP / MPLS MAC RS PCS PMA PMD Medium L3 L2 thernet Forwarding in lower layer can have lower latency thernet make use of thernet PCS layer code block forwarding 6
7 thernet 2 Hard Pipe nd Station Node Node nd Station 100G Pipe Link Pipe L2 / L3 L2 / L3 forwarding L2 / L3 forwarding L2 / L3 PHY Media PCS PHY Relay PCS PHY Media PCS PHY Relay PCS PHY Media PHY 100G Link Pipe Pipe nd Station Node Node nd Station thernet can provide 2 hard pipes using PCS layer forwarding Why low latency No store-and-forward, no buffering No MAC/IP table lookup No scheduling / queuing, no congestion, no packet loss and retransmission 7
8 thernet Hybrid Multiplexing Foreground Traffic Hard Pipe 1 Foreground Traffic Hard Pipe 2 Background Traffic Network Node Network Node Foreground Traffic Hard Pipe 1 Foreground Traffic Hard Pipe 2 Background Traffic Traditional Hard Pipe (no sharing) Foreground Traffic Hard Pipe 1 Foreground Traffic Hard Pipe 2 Background Traffic thernet Node thernet Node Foreground Traffic Hard Pipe 1 Foreground Traffic Hard Pipe 2 Background Traffic thernet s Hard Pipe (Hybrid Multiplexing) Hybrid Multiplexing supports sharing unused bandwidth of hard pipes with background traffic to raise network utilization; 8
9 Multiple Forwarding Modes IP / MPLS Routing IP / MPLS MAC Switching MAC MAC / MPLS / IP Forwarding PCS PCS Up / Flex PCS Low thernet Forwarding PCS Up / Flex PCS Low PCS PCS Layer Forwarding Physical Medium Physical Medium PCS Code Block / L2 / L3 forwarding capability Multiple forwarding modes in parallel in a single device or even single link 9
10 Multiple Modes for Various Services Internet Macro cell small cell 2G/3G/4G/5G RRU BBU Pool Multiple forwarding modes for various type of services respectively An Integrated network for multiple types of service 10
11 thernet Use Cases Financial DC DC VR DC DCN,DCI DC DC DC AR HFT: High Frequency Trading, Time is Money, Latency means profit loss Network based AR/VR with 20ms Motion to Photons Latency/Round Trip Time; Latency Budget for Network is limited as 1~5ms Cloud Service, Computation, CDN Low Latency Application xpanded High Density Low end to end latency, High Throughput Industrial Networking fficient Hybrid Multiplexing Std Flex asy Use, Simple Maintenance Future Mobile Fronthaul and Backhaul Low Latency and High Capacity/Density Internet of Things 4.0 Long Reach Flexible Multi Rate Low latency, Timing sensitive Unified th Based Network Low Latency, Vast Connectivity, 11
12 Use Case 1 thernet Leased Line Branch Headquarter DC A Branch Internet Office DC B 2 hard pipe fine granularity 1G, N*1G, which is an enhancement to Flex spec Security physical layer traffic isolation QoS Guaranteed bandwidth; very low latency; no packet loss Dynamic bandwidth adjustment 12 Company
13 UseCase 2:Xhaul - Converged Fronthaul/Backhaul 5G RRU 4.5G RRU LT RRU 3G/LT enodeb NGFI/eCPRI CPRI CPRI S1 N Inside N Inside N Inside N Inside DC1 DC2 vbbu Pool N Inside N Inside vbbu Pool -X2 One network, one technology for both Fronthaul and Backhaul Integrated Fronthaul / Backhaul XHAUL ( N Inside N Inside N PC X-Haul Network for integrated fronthaul and backhaul Fronthaul(CPRI) : 100us(20km)/200us(40km); Backhaul :10us~1ms; Provide deterministic ultralow latency closed to the physical limitation for wider Fronthaul scale; One Device,One interface, One Fiber for both Fronthaul and Backhaul traffic; Fronthaul/Backhaul On Demand; Hitless Bandwidth Adjustment High bandwidth utilization by creative hybrid multiplexing; Achieve deterministic ultralatency forwarding layer, based on thernet PHY Core; Leverage thernet mature ecosystem; 13
14 thernet Prototype
15 Copyright 2014 Huawei Technologies Co., Ltd. All Rights Reserved. The information in this document may contain predictive statements including, without limitation, statements regarding the future financial and operating results, future product portfolio, new technology, etc. There are a number of factors that could cause actual results and developments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any time without notice.
16 Flex Architecture Reference: 16
17 Reference: Flex Calendar Reference: 17
18 Reference: Flex Overhead Reference: 18
19 thernet volution Standard thernet Interface Standard Fix Rate Phase 1 10M,100M,1000M 10G,40G,100G Flex thernet Interface Flexible Multi Rate Phase 2 2.5G,5G,25G,50G 200G,400G, OIF Flex 10/40G, nx25g,mx5g Flexible Multi-rate interface Deterministic Xtremely low latency: ~100ns Xpanded service : XHAUL,HPC, SAN, Industrial Internet Xtremely Simple Maintenance Xtremely High Speed/Density FleXible rate pipe thernet Network thernet verywhere Phase 3 thernet will be the evolution direction of thernet 19
20 5G xhaul vs Crosshaul 20
21 Use Case 2 Xhaul Integrated Fronthaul/Backhaul Mobile Fronthaul + Backhaul Slice Fronthaul BBU IP / MPLS Backhaul PC Mobile Backhaul Slice IP / MPLS Backhaul IP / MPLS Backhaul PC Internet Fronthaul, Backhaul, IoT, Broadband, VPN, etc. dge DC Mobile Core One network, one technology for both Fronthaul and Backhaul Integrated Fronthaul / Backhaul XHAUL ( 21
22 Progress of thernet Prototype No.1 No.2 No.3 (CPRI Option7) (100G) CPRI Option7 100G CPRI Tester Use FPGA to prove two key features: 150/200ns single node Latency, 1ns jitter per 3 nodes CPRI transparently transmission Network Performance Tester Two 10G ports support CPRI Option7 and Native 10G. Six 100G ports support thernet and Native 100G 22
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