PaxComm Co. Ltd. 라우터 / 스위치 Chipset ㈜ 팍스콤

PaxComm Co. Ltd. 백 영식 2 목차 1. Layer 2, Layer 3 switching 2. Switching Chip architectures 3. Galileo-I architecture 4. Galileo-II architecture 5. MMCnet architecture

PaxComm Co. Ltd. 백 영식 3 Layer 2, Layer 3 Switching (1)  User 의 요구  Dedicated high speed port 를 필요  다양한 application 의 사용 (Video, Audio 등의 multimedia application)  Network 의 요구 사항  고속 WAN link speed  Adapting to evolving traffic patterns  Support multiple service levels  Broadcast 의 처리  Security and firewall

PaxComm Co. Ltd. 백 영식 4 Layer 2, Layer 3 Switching (2)  Layer 2 Switching  Efficient and high-speed multi-port learning bridge  Easy implementation and installation  Large Flat Network  Broadcast, Security problem  Can be solved by VLAN  Intercommunication problem between VLANs  Forwarding Model  cut-through  store-and-forward  adaptive cut-through

PaxComm Co. Ltd. 백 영식 5 Layer 2, Layer 3 Switching (3)  Layer 3 Switching  High speed(Wire speed)  Quality of Service  Multicast  Layer 3 switch 구현  Traditional software-based routing -> hardware  Route once, switch many  Cut-through

PaxComm Co. Ltd. 백 영식 6 Switching Chip Architecture (1)  I-Cube : Pure Crossbar (16 Port and 16 Port plus 1 Gigabit I-Cube Design, simplified) Four Ethernet Ports Cross Bar Four Ethernet Ports Four Ethernet Ports Four Ethernet Ports Four Ethernet Ports Cross Bar Four Ethernet Ports Four Ethernet Ports Four Ethernet Ports Single Gigabit Port

PaxComm Co. Ltd. 백 영식 7 Switching Chip Architecture (2)  PMC-Sierra and Texas Instrument : Ring Device A eight Fast Ethernet Ports Device D eight Fast Ethernet Ports Device C eight Fast Ethernet Ports Device B eight Fast Ethernet Ports

PaxComm Co. Ltd. 백 영식 8 Switching Bus Ports Switch Engine Memory Ports Switch Engine Memory Ports Switch Engine Memory Ports Switch Engine Memory Switching Chip Architecture (3)  Galileo - I : Distributed Switching Architecture

PaxComm Co. Ltd. 백 영식 9 Switching Chip Architecture (4)  Galileo-II : Hybrid Cell Crossbar Cell Crossbar 8 Fast Ethernet Ports 8 Fast Ethernet Ports 8 Fast Ethernet Ports 8 Fast Ethernet Ports Ethernet Packet Traffic Cell Traffic

PaxComm Co. Ltd. 백 영식 10 Switch Engine Shared Memory Port Ports Switching Chip Architecture (5)  MMC networks : Share Memory Architecture

PaxComm Co. Ltd. 백 영식 11 Galileo-I Architecture (1)  Direct support for packet buffering  High-performance Distributed switching engine  VLAN support  Quality-of-Service Queuing  Address Resolution  Distributed Address Table management  5 종 17 개의 GalNet Protocol message 를 이용한 Packet forwarding  NEW_ADDRESS  BUFFER_REQUEST  START_OF_PACKET  PACKET_TRANSFER  END_OF_PACKET

PaxComm Co. Ltd. 백 영식 12 Galileo-I Architecture (2) PROCESSORMEMORY PCI BRIDGE Galileo 10/00 device DRAM Galileo 10/00 device DRAM OTHER WAN INTERFACE PCI BUS  Implementation example

PaxComm Co. Ltd. 백 영식 13 Galileo-II Architecture (1) Switch Controller GT ports Fast Ethernet Switch Controller GT ports Fast Ethernet Switch Controller GT ports Gigabit Ethernet Switch Controller (Future) WAN 4 Port G.Link Crossbar GT (12Gbps) PCI used for CPU interface and for connection to other switching devices (66M PCI) G.Link Interconnects (2.4 Gbps each)  Galileo-II Switch Using G.Link Crossbar

PaxComm Co. Ltd. 백 영식 14 Galileo-II Architecture (2) Switch Controller 4 Port G.Link Crossbar Switch Controller 4 Port G.Link Crossbar  Peer-to-peer Galileo-II Configuration

PaxComm Co. Ltd. 백 영식 15 Galileo-II Architecture (3) Switch Controller Switch Controller Switch Controller 4 Port G.Link Crossbar Switch Controller Switch Controller Switch Controller 4 Port G.Link Crossbar Switch Controller Switch Controller Switch Controller 4 Port G.Link Crossbar Switch Controller Switch Controller Switch Controller 4 Port G.Link Crossbar  Hierarchical G.Link Configuration

PaxComm Co. Ltd. 백 영식 16  Current Approaches to Networking Equipment Design Flexibility Time to Market Performance Cost Low High Slow High Low High Fast General Purpose Processor Network Processor Custom ASICs MMCnet Architecture (1)

PaxComm Co. Ltd. 백 영식 17  Basic Switch Architecture MMCnet Architecture (2) nP5400 BitStream Processor BitStream Processor Link Memory Data Memory Packets Headers Cells Headers Cells ViX Interconnect

PaxComm Co. Ltd. 백 영식 18 MMCnet Architecture (3)  Switch Component Requirements  AF5400 switch Configuration(5.5Gbps) nP5400 packet Switching Module CPU Data Memory Link Memory ViX Interconnect EPIF Fast Ethernet

PaxComm Co. Ltd. 백 영식 19 MMCnet Architecture (4) nP5400 packet Switching Module CPU Data Memory Link Memory ViX Interconnect EPIF Fast Ethernet EPIF Fast Ethernet nP5400 packet Switching Module CPU Data Memory Link Memory  11.0-Gbps switch Configuration

PaxComm Co. Ltd. 백 영식 20 MMCnet Architecture (5) nP5400 packet Switching Module CPU Data Memory Link Memory EPIF Fast Ethernet Fast Ethernet Fast Ethernet Fast Ethernet  22.0-Gbps switch Configuration nP5400 packet Switching Module CPU EPIF Fast Ethernet Fast Ethernet Fast Ethernet Fast Ethernet nP5400 packet Switching Module CPU EPIF Fast Ethernet Fast Ethernet Fast Ethernet Fast Ethernet nP5400 packet Switching Module CPU EPIF Fast Ethernet Fast Ethernet Fast Ethernet Fast Ethernet ViX Interconnect Data Memory Link Memory Data Memory Link Memory Data Memory Link Memory

PaxComm Co. Ltd. 백 영식 21 MMCnet Architecture (6)  5400 Architecture Ingress Processing Switching Queuing Scheduling Egress Processing Bit Stream Processor 5400 Switch Fabric Bit Stream Processor

PaxComm Co. Ltd. 백 영식 22 MMCnet Architecture (7) Search Machine Micro Controller Statistics Routing Table Memory Slicer MAC CHANNEL Up to 64K entries per channel Wire speed search using any key Packet to Cell Conversion ViX Switch Interface Wire speed parsing and manipulation of ingress and egress packets RMON Group 1, 2, 3, and 410/100 Ethernet MACs MII Interface  EPIF Architecture

PaxComm Co. Ltd. 백 영식 23 MMCnet Architecture (8)  System Architecture Bit Stream ProcessorSwitching Fabric System CPU Driver Microcode (L2 learning and Aging, IP, IPX Routing RTOS nP Independent API Routing software