The future of SDN: Transforming the REN in support of Big Data

Transcription

1 The future of SDN: Transforming the REN in support of Big Data Oct 9th, 2013 Eric Choi Senior Product Manager, Data Centre Business Unit APAC and Japan

2 Data Intensive Science Main Driver for High Capacity Research Education Networks Large Hadron Collider- ATLAS Genomics Square Kilometer Array Commercial networks Research/collaboration network #flows Many (mouse flows) Few ( elephant flows) Flow sizes Typically follows Internet mix (IMIX) Very large- up to 50% of link bandwidth in a single flow TCP effectiveness Very good Weak: result in loss sensitivity, increased CPU load ON DEMAND NETWORKING, LARGE BUFFER, SINGLE FLOW AT 100Gbps

3 hashing Typical 100GbE Forwarding Engine Architecture Suitable for internet traffic but not elephant flows in REN 10 wavelengths of 10Gbps 10 x10g 10 x10g 64B/66B PHY 50Gbps PFE 50Gbps PFE 10 wavelengths of 10Gbps 10 x10g 10 x10g 64B/66B PHY Lkup hashing. 100Gbps Buffering ASIC Lkup COMPROMISED NETWORK PERFORMANCE DUE TO UNEQUAL LOAD BALANCING Brocade Communications Systems, Inc. Company Proprietary Information

4 Packet Buffer for 10Ge/100Ge port Uniqueness of Research Networks 40G 25G Avg 25Gbps No Congestion? 100Ge Router 40G Avg 25Gbps 25G 120G Avg 25Gbps 40G 100GbE 75G 100GbE 25G SUFFICIENT PACKET BUFFER IS REQUIRED TO TCP SESSION BACKOFF Brocade Communications Systems, Inc. CONFIDENTIAL For Internal Use Only

5 Typical Firewall Architecture Multi-Processors Architecture Not suitable for mouse and elephant flow WORKAROUND BY MOVING FIREWALL FUNCTION TO OPENFLOW ROUTER 10/11/ Brocade Communications Systems, Inc. CONFIDENTIAL For Internal Use Only

6 Internet2 Requirement of On-Demand L2 Connectivity Olympia Portland Eugene Sacramento Sunnyvale San Luis Obispo Los Angeles San Diego Seattle Reno IP router node 6 Spokane Bozeman Boise Las Vegas Optical add/drop facility Missoula Salt Lake City Phoenix Tucson Billings 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 Baton Rouge Detroit Chattanooga Nashville Buffalo Cincinnati Louisville Cleveland Indianapolis Ashburn Atlanta Pittsburgh Charlotte Albany Philadelphia Boston New York (2) Washington DC Raleigh Jacksonville 2013 Brocade Communications Systems, Inc. Company Proprietary Information Exchange Point Internet 2 49 Custom Location Facilities 15,500 miles of dark Fiber 8.8 Tbps of Optical Capacity Hybrid Mode with protected OpenFlow traffic PROVIDED BY ROUTER WITH PROGRAMATIC CONTROL FORWARDING PLANE

7 Network Programmability For Physical Network Devices Control Plane OpenFlow Controller Control Plane Plugin Plugin OpenFlow Client Flow Table Develop Once Control Plane Use forever Router OS Control Plane Router OS Data Plane Data Plane SDK +Control SDK +Control Develop Plane every time Plane Router OS Router OS for new Platform SDK+Data SDK+Data Plane Plane

8 OpenFlow-Enabled Device Operation How it works? The Flow Table contains Flow Entries Each Flow Entry represents a Flow, e.g., packets with a given destination IP address Incoming packets are matched against the Flow Entries in priority order Matching stops when a match occurs, and the actions for that Flow Entry are performed Unmatched packets are typically dropped Flow Entry Matching Fields Actions Flow Table Flow Entries Highest Priority Lowest Priority Stats Matching search Brocade Communications Systems, Inc. PROPRIETARY

9 SDN WAN Use Case 1 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 Protected OpenFlow experimentation by researchers does not affect production traffic OpenFlow/Production traffic isolation in hardware Brocade Communications Systems, Inc. Company Proprietary Information

10 SDN WAN Use Case 2 Unprotected Production IP Network with OpenFlow Overlay Hybrid port mode OpenFlow overlay runs concurrently with traditional MPLS/IP routing OpenFlow enabled on existing production network Unprotected OpenFlow allowed as an exception rule to MPLS/IP forwarding Service Provider can add new WAN Physical Infrastructure revenue-generating features on top of existing production network 2013 Brocade Communications Systems, Inc. Company Proprietary Information 10 Features (Applications) Network Controller OpenFlow Overlay Traditional MPLS/IP Routing

11 Summary Key benefits of SDN: agility, operational efficiency Network programmability, openness, control/data plane separation. Near-term use cases on WAN/DC network virtualization Hybrid port mode simplifies transition to SDN 2013 Brocade Communications Systems, Inc. Discussed under NDA

12