SOFTWARE DEFINED NETWORKING: A PATH TO PROGRAMMABLE NETWORKS. Jason Kleeh September 27, 2012

Transcription

1 SOFTWARE DEFINED NETWORKING: A PATH TO PROGRAMMABLE NETWORKS Jason Kleeh September 27, 2012

2 What if you could Build your next data center optimized for highest demands in flexibility, reliability, and scale Virtualize your network starting now for greater responsiveness and increased asset utilization Create and deliver customized services and new offerings at the speed of customer need 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only Unlock the intelligence from your network for real-time orchestration and analytics 2

3 Why can t you do these things today? Traditional Network Hierarchical Closed North/Southoptimized Monolithic Inflexible Network changes are difficult, slow, and risky Can t handle rapid swings in traffic demands New services requires too new specialized skills 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 3

4 What is Software-Defined Networking (SDN)? Software abstraction layer on top of networking infrastructure Allows external controller to control how packets are forwarded by routers and switches Key customer benefits: Decouple network application innovation from dependency on new router OS releases Accelerate automation of network changes to increase service velocity 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 4

5 Brocade Cloud-Optimized Networking Architecture for building the software-defined network Cloud-Optimized Network Stack Enabling Technologiesn Key Benefits Cloud Management Layer Cloud APIs: OpenStack, VMware, Microsoft, CloudStack, etc. Automation and orchestration Services Layer Programmatic Control: OpenFlow; OpenScript Personalization and monetization Network Virtualization Layer Overlay Networking: VXLAN, NVGRE, STT; MPLS Flexibility and efficient asset utilization Network Fabric Layer Any-to-any connectivity: Ethernet Fabrics; TRILL; IP routing Reliability and simplicity 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 5

6 Who is behind Software Defined Networking? Open Networking Foundation (ONF) ONF launched publicly in March, 2011 Support from more than 70 major companies The ONF defines OpenFlow and API specifications Founding members of ONF: x Physical Network Orchestration App App App App Virtualization Network OS Features OS Hardware OpenFlow Features Features ONF SDN Model (simplified) OS Hardware OS Hardware Features OS Hardware Features OS Hardware 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 6

7 Software Defined Networking and IETF Similar Goals, Similar Architecture SDN Problem Statement and Use Cases for Data Center Applications draft-pan-sdn-dc-problem-statement-and-usecases-02.txt Flexible in terms of provisioning protocols OpenFlow, NetConf, PCE App App App App SDN Layer (Network Virtualization, Programmability, and Monitoring Physical Network Provisioning Protocols Features OS Hardware Features Features SDN-enabled Network OS Hardware OS Hardware Features OS Hardware Features OS Hardware 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 7

8 OpenFlow Basics 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 8

9 OpenFlow Overview Protocol that enables communication between an OpenFlow controller and an OpenFlow router Control plane routing decisions are made by the controller, which typically runs on a server Data plane forwarding is still done by the router Router and controller communicate via the OpenFlow protocol, which defines messages Router maintains flow tables, which are maintained by the controller using APIs OpenFlow Client Flow Table Control Plane OpenFlow Controller Control Plane Router OS Data Plane 2012 Brocade Communications Systems, Inc. 9

10 OpenFlow Router Operation Flow table contains entries that define a flow based on the packet header Flows are sorted by priority as defined by the controller, highest priority flows match first Ingress Port MAC DA Flow Table Flow Action Counters Flow Action Counters Flow Action Counters Flow Action Counters? Does the packet belong to this flow? MAC SA Flow Action Counters Layer 2 Layer 3 Ether VLAN 802.1p IP IP IP Type ID Bits Src Dst Protocol IP DSCP TCP/UDP Src Port Add, Remove, Modify VLAN Tag Forward to a Port List Drop Send Packet to Controller Forward Via Control Plane* TCP/UDP Dst Port 2012 Brocade Communications Systems, Inc. 10

11 OpenFlow Applications What can we do with OpenFlow? OpenFlow itself does not define or mandate any specific application OpenFlow enables a large set of applications due to its flexibility Supported applications should increase over time as new functionality is added to the OpenFlow specification E.g., flow policing/rate limiting Ideal for automating common operations E.g. security via ACLs, isolation via VLANs or VRFs etc Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 11

12 SDN USE CASE WAN Traffic Engineering with OpenFlow Example SDN Use Case 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 12

13 Internet2 BROCADE OPENFLOW ENABLED 100G NATIONWIDE BACKBONE Olympia Portland Eugene Sacramento Sunnyvale San Luis Obispo Los Angeles Seattle Reno San Diego IP router node Spokane Bozeman Boise Las Vegas Optical add/drop facility Missoula Salt Lake City Phoenix Billings Tucson Miles City Dickinson Denver Albuquerque El Paso Bismarck Minneapolis Kansas City San Antonio Fargo Houston (2) Chicago (3) Tulsa Dallas Madison Memphis St. Louis Jackson Detroit Chattanooga Baton Rouge Nashville Buffalo Cincinnati Louisville Cleveland Indianapolis Ashburn Atlanta Pittsburgh Charlotte Albany Boston Philadelphia New York (2) Washington DC Raleigh Jacksonville Internet 2 Exchange Point 49 Custom Location Facilities 15,500 miles of dark Fiber 8.8 Tbps of Optical Capacity Hybrid Mode with protected OpenFlow traffic 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 13

14 Research and Education Network (REN) WAN Use Case Protected Production IP Network with OpenFlow Overlay Protection Layer Features (Applications) Network Controller OpenFlow Overlay Traditional MPLS/IP Routing WAN Physical Infrastructure Hybrid port mode OpenFlow overlay runs concurrently with traditional MPLS/IP routing OpenFlow enabled on existing production network without disruption Protected OpenFlow experimentation by researchers does not affect production traffic OpenFlow/Production traffic isolation in hardware 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 14

15 SDN USE CASE Large-Scale Data Center and Network Virtualization 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 15

16 Cloud-Optimized Networks via SDN are the Solution Brocade delivers a clear path to Software Defined Networking Cloud Management System Network Controller Network changes are quick and easy VM VM VM PHY PHY VM VM VM PHY PHY Network Fabric VM VM VM PHY PHY Rapid deployment of new services Flexible, on demand networks Open Automated Personalized Flexible More Resilient Highly automated environments 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 16

17 Cloud Providers Will Face Same Challenges Increasing virtualization in cloud providers environments Number of VMs in Use as Service Providers Cloud IaaS Offerings Source: Gartner, March Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 17

18 Network Virtualization Using L2 over L3 Tunnels An Industry Trend for Hyper-Scale Data Centers VM VM VM PHY PHY VM VM VM PHY PHY VM VM VM PHY PHY Network Virtualization created using L2 over L3 tunnels Tunnels Tunnels L2 over L3 Tunnels Tunnels SP Physical Infrastructure Programmatic interface may use OpenFlow Requires additional management protocols beyond OpenFlow to provision tunnels 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 18

19 Network Virtualization Using L2 over L3 Tunnels TUNNEL TECHNOLOGY: RECENT INDUSTRY PROPOSALS VxLAN (IETF draft, August 2011) Author: VMware NVGRE (IETF draft, September 2011) L2 L2 over L3 tunnel L2 L3 L2 Author: Microsoft STT (IETF draft, March 2012 Payload Tunnel header Author: Nicira BROCADE SOLUTIONS WILL BE TUNNEL AGNOSTIC 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 19

20 Thank You 2012 Brocade Communications Systems, Inc. PROPRIETARY AND CONFIDENTIAL Discussed under NDA Only 20