The Evolution Path from Frames to Services

Transcription

1 The Evolution Path from Frames to Services Alberto Degradi Manager Systems Engineering Core Technology HPSR Turin 26th June 1

2 Agenda Market Trends Lan Switching Evolution Routing evolution 2

3 Agenda Market Trends Lan Switching Evolution Routing evolution 3

4 On Customers Minds What s Driving Infrastructure Investments Merrill Lynch survey of IT Managers, Oct/ Nov Demand for intelligence in the network to support new applications Upgrades Convergence/IP Telephony Network/Data security Business resiliency Productivity improvement Operational simplicity, Manageability Total cost of ownership

5 Cisco Technology Foundation Intelligent Services Performance Evolutionary Infrastructure 5

6 Technology Differentiators Intelligence Quality of service Availability Security Managebility Convergence Innovation Speed Longevity Silicon Hardware Cost riduction Architecture Evolution Generational Approch Investment Protection 6

7 Spread of Advanced Functionalities through the Product Portfolio Advanced Functionalities High Performance Integrated Services Investment Protection Time Base Functionality Semplicity 7

8 Agenda Market Trends Lan Switching Evolution Routing evolution 8

9 Catalyst 6500 chassis options 9

10 Catalyst st Generation System Released in 1999 Flexible architecture allows for a system deployable from the critical wiring closet to the Enterprise core and up through the Service Provider Edge. 32 Gb/s Shared BUS PFC MSFC Supervisor Engine Interface Line Card Interface Line Card PSU PSU 10

11 Catalyst nd Generation System Released 2000/2001 PFC MSFC CEF256 dcef256 Fabric Line Card Distributed Fabric Line Card Distributed Fabric Line Card dcef 256 (6816) Switch Fabric Module 32 Gb/s Shared BUS Supervisor Engine 2 Interface Line Card Interface Line Card PSU PSU 11

12 Catalyst 6500 Switch Architecture XBAR in action Crossbar Switch Switch fabric fabric scales scales to to higher higher performance levels levels than than shared shared memory Multiple simultaneous unicast transmissions at at THE THE SAME SAME TIME TIME 14

13 Catalyst 6500 Switch Architecture XBAR in action Single Single Multicast or or Broadcasts transmission at at ANY ANY ONE ONETIME 15

14 Catalyst 6500 Switch Architecture Local Switching DFC Contains local copy of the forwarding tables so that the DFC can make its own L2 and L3 switching decisions FIB FIB Forwarding Information Base is obtained from the PFC2 on the Supervisor used to assist in determining forwarding path of packet Data Data 16

15 LAN Switching: Catalyst 6500 Full Investment Protection CEF720 System CEF256 and Switch Fabric 32Gb/s Shared Bus Classic System 18

16 Catalyst 6500: Services Modules IDS Intrusion Detection better securing your networks CSM Content Switching to better balance server requests across server farms 20

17 Catalyst 6500: Services Modules Firewall Module VPN Module NAM Module SSL Module 21

18 Agenda Market Trends Lan Switching Evolution Routing evolution 28

19 First Generation Routers Shared Backplane CPU Route Table Buffer Memory CPU Memory Line Interface Line Interface Line Interface Line Interface MAC MAC MAC Typically <0.5Gb/s aggregate capacity 29

20 Second Generation Routers CPU Route Table Buffer Memory Line Card Line Card Line Card Buffer Memory Fwding Cache MAC Buffer Memory Fwding Cache MAC Buffer Memory Fwding Cache MAC Typically <5Gb/s aggregate capacity 30

21 Third Generation Routers Switched Backplane Line Card CPU Card Line Card Line Interface CPU Local Buffer Memory Routing Table Local Buffer Memory Memory Fwding Table Fwding Table MAC MAC Typically <50Gb/s aggregate capacity 31

22 Fourth Generation Routers/Switches Optics inside a router for the first time Optical links 100s of metres Switch Core Linecards Tb/s routers 32

23 Service Provider Challenge Deliver Value-Added Services to High-Speed Customers ASIC-based platforms Provide high-performance forwarding optimized for core/backbone applications Require ASIC respins (HW replacement) to extend beyond fixed feature set Lack flexibility to adapt to rapidly changing features required to support new edge services CPU-based platforms Feature rich edge feature set Performance ASICs Technology Gap Microprocessors Flexibility Flexible SW upgrade to enhance features Excellent service delivery vehicles for low-speed customers Lack performance to deliver services to high-speed customers Lack capacity for dense aggregation solutions 33

24 Service Provider Challenge High-Speed Edge Processing Requires Distributed Architecture Centralized platforms Require an extremely fast forwarding engine (for example, 40 Mpps) 40 Mpps -> 25 ns to process a packet 25 ns to process packet requires extremely fast memory fast memory components are small Software is constrained by fewer clock cycles and less memory space Reduced functionality and fewer features in parallel Distributed platforms Forwarding engine is 1/n system capacity (n = number of slots) 4 Mpps -> 250 ns to process a packet Allows greater flexibility in choice of memory and software optimization Rich edge feature set with all features in parallel Performance ASIC Technology Frontier Centralized (Total System) Cisco Series (Total System) Functionality Cisco Series (Individual Line Card) 34

25 IP Services Engine (ISE) Optimized for the High-Speed Provider Edge Distributed Architecture Allows Greater Aggregate Scalability than Centralized Architectures ACLs (000s) Feature Scalability with ACLs Cisco ISE Centralized QoS Queues Functionality Scalability with QoS Queues Centralized Routers Line Cards Line Cards 35

26 IP Services Engine (ISE) Optimized for the High-Speed Provider Edge ISE Memory Optimized Ternary Content Addressable Memory (TCAM) Architecture Enables All Features Simultaneously while Maintaining High-Performance Forwarding Packet Data Forwarding xacl Processing CAR Processing NetFlow + Stats Processing Policing Classification NetFlow Processing Buffering and QoS/CoS Feature Implementation TCAM memory block allows parallel feature processing 38

27 IP Services Engine (ISE) Optimized for the High-Speed Provider Edge ISE Programmable Architecture Enables a Broad Range of New Services with a Simple Software Upgrade Instead of a Costly Hardware Replacement FIB TCAMs and SRAMs ucode Prefix/Adj Lookup ucode TCAM Lookup ucode Micro-coded stages in ISE give an ASIC-based forwarding engine programmability 39

28 IP Services Engine (ISE) 10G Enabling the High-Speed Provider Edge ISE Delivers the Only 10G-Enabled Edge SP Backbone High-Speed Edge Demands High- Bandwidth Uplinks Service Provider POP 10G-Enabled High-Speed Edge Cisco OC-192 OC-192 Cisco OC-192 ISE Line Card Cisco 12406/12404 ISE Line Card OC-192 OC-192 ISE Line Card OC-192 OC-192 Cisco 12416/ ISE Line Card Cisco 12416/ OC-3 OC-3 OC-3 CHOC-12 CPE Routers OC-12 LEC Grooms Customer DS3 or OC-3 Lines onto a CHOC-12 OC-48 41

29 IP Services Engine (ISE) Operational Efficiency at the High-Speed Provider Edge Before 16 Cisco 7513s (eight racks) 384 CU DS3 terminations 25,000 watts 80 sq ft of rack footprint SP Edge Before ISE Cisco Series 32 Uplinks 16 Cisco 7513s 384 CU Lines SONET SDH N/W 43

30 IP Services Engine (ISE) Operational Efficiency at the High-Speed Provider Edge After 1x12410 (half rack) 8 x 1port CHOC-48 (DS3) eight fibers to DACS/ADM ~ 2700 watts 5 sq ft of rack footprint SP Edge ISE with Optical Channelization Cisco Uplinks 16 Times Less POP Space 1 Cisco SONET SDH N/W 80+% Less Power Consumption 8 Optical Fibers 44

31 Summary A new need is emerging to deliver valueadded services to high-speed customers Service Blades Distributed architecture Edge application-optimized line cards Performance Feature richness and flexibility 46

32 PS _05_2002_c1 2002, Cisco Systems, Inc. All rights reserved. 47