1. WELCOME

2. A Presentation on Resilient Packet Ring Technology
RPR TECH
RPR TECH
A Presentation on Resilient Packet Ring Technology
28-JUL-2013
DEPT OF ECE

3. CONTENTS INTRODUCTION. ETHERNET AND SONET.
RPR TECH
RPR TECH
CONTENTS
INTRODUCTION.
ETHERNET AND SONET.
LIMITATIONS OF ETHERNET AND SONET.
WHY RPR TECHNOLOGY ?
RPR TECHNOLOGY.
CLASSIFICATION OF QOS.
RPR CHARACTERISTICS.
PACKET RING STANDARD DEVELOPMENT .
CONCLUSION.
S7 ECE DEPT
DEPT OF ECE

4. INTRODUCTION Packet-based technologies from LAN to MAN
RPR TECH
INTRODUCTION
Packet-based technologies from LAN to MAN
MAC protocol for metro fiber ring networks.
Emerging network
Transport of data traffic over optical fiber ring networks.
Ethernet and sonet

5. Today’s Traditional Metro Access Networks
ETHERNET
SONET

6. ETHERNET Service offered via Ethernet interface.
RPR TECH
ETHERNET
Service offered via Ethernet interface.
Speed10 Mbps to 10 Gbps
Rapid acceptance in the marketplace.
Familiarity, simplicity, and low cost.

7. SONET Synchronous optical network. High speed. Run on optical fiber.
RPR TECH
SONET
Synchronous optical network.
High speed.
Run on optical fiber.
Multiplexing protocols.
Point-to-point circuits between ring nodes.

8. WHY RPR TECHNOLOGY ? Limitations of sonet and ethernet.
Fixed Circuits.
Multicast Traffic.
Wasted Protection Bandwidth.
Does not have a fast protection mechanism.
Not good at implementing global fairness.

9. WHY RPR TECHNOLOGY Reliability and manageability Advanced Protection.
Distributed Control.
Speed And Number Of Nodes.
Plug-and-play Operation.
Performance Monitoring Capabilities.
Bandwidth Management.
Unicast, Multicast And Broadcast Data Traffic.

10. WHAT IS RPR TECHNOLOGY Resilient Packet Ring Tech
Symmetric Counter-rotating Rings
Physical Layers
Spatial Reuse
Quality Of Service

11. Symmetric Counter-rotating Rings

12. Wrapping the Packets

13. Physical Layers
Physical layer: two existing physical layers of high interest – Ethernet and Sonet/SDH. There are two varieties of each:
Gigabit Ethernet reconciliation sublayer (GERS) for the Gigabit Ethernet  
10-Gigabit Ethernet reconciliation sublayer (XGERS) for the 10-Gigabit Ethernet
Sonet/SDH reconciliation sublayer (SRS) for Generic Framing Procedure (GFP)
GFP reconciliation sublayer (GRS) for GFP adaptation sublayer only
26-JUL-2011
S7 ECE DEPT

14. SPATIAL REUSE
Unlike SONET/SDH, bandwidth is consumed only between the source and destination nodes. Packets are removed at their destination, leaving this bandwidth availableto downstream nodes on the ring.

15. CLASSIFICTIONS OF QOS SERVICE TYPE Class A (high-priority)
Class B (medium-priority)
Class C (low-priority).

16. The MAC controls traffic access to four different logical services on the ring three of which provide different QOS capabilities: CLASS A It is a High priority Quality of service, it provides indefeasible reserved bandwidth that cannot be reclaimed by active lower-priority traffic, even if there is idle bandwidth available on the channel.

17. CLASS B It is a medium priority Quality of service it provides reserved bandwidth that may be reclaimed by active equal- or lower-priority traffic if there is idle bandwidth available on the channel.

18. CLASS C It is a Low priority Quality of Service it provides a share of any unused ring bandwidth. This channel is for best-effort services only.

19. RPR CHARACTERISTICS Packet ADM Architecture. Spatial Reuse.
RPR TECH
RPR CHARACTERISTICS
Packet ADM Architecture.
Spatial Reuse.
Resiliency.
Bandwidth Fairness.
Broadcast or Multicast Traffic.

20. SPATIAL REUSE Increase Efficiency. Bidirectionallytraffic.
RPR TECH
SPATIAL REUSE
Increase Efficiency.
Bidirectionallytraffic.
Provide Full Bandwidth.

21. Resiliency Recovery from a Fiber Cut
RPR TECH
Resiliency
Recovery from a Fiber Cut
Self-healing or automatic recovery.

22. Recovery from Fiber Cut

23. Broadcast or Multicast Traffic
RPR TECH
Natural fit for broadcast and multicast traffic.
Nodes can simply receive the packet and forward it.
Packet by sending one copy around the ring.
Reserved Bandwidth of RPR is ¼ the bandwidth
as the SONET multicast.

24. RPR TECH
Bandwidth Fairness
RPR TECH
ETHRNET

25. PACKET RING STANDARD DEVELOPMENT IN IEEE 802.17
The Institute of Electrical and Electronic Engineers (IEEE) began the RPR standards (IEEE ) development project in December 2000 with the intention of creating a new Media Access Control layer for fiber optic rings.

26. RPR TECH
Some of the goals of the
Supports dual counter rotating ring topology.
Full compatibility with IEEE's 802 architecture.
Protection mechanism with sub 50ms fail-over.
Packets destination stripping.
Avoid technical risk.

27. CONCLUSION True alternative to SONET transport for packet networks.
RPR TECH
CONCLUSION
True alternative to SONET transport for packet networks.
Fast protection, restoration, and performance monitoring comparable of SONET.
Unlike SONET RPR provides an ETHERNET like cost curve as well as superior bandwidth utilization.
RPR MAC with Ethernet offers highly efficient metro networks.

28. THANK YOU

29. RPR TECH ?
QUIESTIONS