1. Classical Ethernet Services, Evolution to VPLS (an L2VPN), VPLS Operation Vishal Sharma, Ph.D. Metanoia, Inc. Email: experts@metanoia-inc.com Web: http://www.metanoia-inc.comhttp://www.metanoia-inc.com +1 650-641-0082 Metanoia, Inc. Critical Systems Thinking™ © Copyright 2005-2014 All Rights Reserved

2. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 2 Classical L2 VPNs Provider provisions circuits between CE devices (p2p VCs) PE’s act as virtual circuit switch Forwarding between CE’s depends on on VC, not frame contents High availability  use ATM restoration, run circuits over Layer 1 Provider’s Core Network

3. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 3 Classical Ethernet Service LAN Switching Application LAN Routing Application

4. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 4 L2 VPN Components What does the P1-PE2 connection really look like?

5. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 5 L2 VPN Component Details PSN: Packet Switched Network PWs: Pseudo-Wire(s) CE: Customer Edge (device) PE: Provider Edge (device) P: Provider Router (interior)

6. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 6 Virtual Private Wire Service (VPWS) Control Plane Operation

7. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 7 VPWS – Data Plane Operation

8. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 8 Virtual Private LAN Service (VPLS) Control Plane

9. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 9 VPLS – Data Plane

10. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 10 VPLS Network Overview

11. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 11 VPLS Protocols Involved

12. Metanoia, Inc. Critical Systems Thinking™  Copyright 2005-2014 All Rights Reserved 12 Data Plane: Flooding, Address Learning and Forwarding All address unknown frames (unicast, multicast, broadcast) flooded over corresponding PWs to all relevant PEs only