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SYNHRONOUS TRANSMISSION OFC

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STM TRANSMISSION ON SDH

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  • En la pagina 41 hay un error. Donde dice que la cantidad máxima de VC-12 que pueden concatenarse es 64. En realidad la cantidad máxima es 63 (3x7x3). A partir de ahí ese error se propaga a las páginas 42 y 43
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SYNHRONOUS TRANSMISSION OFC

  1. 1. WELCOME TO PRESENTATION ON NEXT GENERATION SDH ARVIND
  2. 2. Agenda  Migration to NGN SDH Pre SDH & SDH Review Market & Technology Drivers  NGN SDH – Overview Virtual Concatenation (VCAT) Page 2 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Virtual Concatenation (VCAT) Link Capacity Adjustment scheme (LCAS) Generic Framing Procedure  Future SDH Technologies Siemens NGN SDH Products
  3. 3. PDH Bit rates Page 3 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  4. 4. PDH Multiplexing Structure Page 4 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  5. 5. Tributary Access Page 5 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  6. 6. Tributary Access Page 6 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  7. 7. No Common Standard Page 7 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  8. 8. Synchronisation Page 8 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  9. 9. Point to Point Networks Page 9 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  10. 10. Developing Networks Page 10 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  11. 11. Pre SDH Summary : Limitations of PDH Network Traffic Add Drop Inter vendor operability Bandwidth Utilisation of Transmission Media Synchronisation Efficient Network Management Page 11 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Efficient Network Management
  12. 12. SDH Definition Page 12 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  13. 13. Advantages of SDH Page 13 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  14. 14. Notes on SDH Rates Page 14 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  15. 15. SONET Page 15 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  16. 16. × 4 × 1 STM-16 AUG-16 VC-4-16c VC-4-4c STM-64 AUG-64 × 1 STM-4 C-4-4c C-4-16c × 1× 1 STM-256 VC-4-256c C-4-256c × 1 VC-4-64c C-4-64c AUG-4 × 4 AU-4-256c AU-4-64c AU-4-16c AU-4-4c AUG-256 × 1 × 4 × 1 × 1 Page 16 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. T1540590-00 (108449) C-11VC-11TU-11 × 1 × 3 × 3 × 1 × 1 × 3 × 4 × 7 × 7 STM-1 AUG-1 AU-4 VC-4 AU-3 VC-3 C-4 C-3 C-2 C-12 VC-3 VC-2 VC-12 TU-3 TU-2 TU-12 TUG-2 TUG-3 × 4 STM-0 × 1 × 1 Aligning Mapping Pointer processing Multiplexing
  17. 17. SDH / PDH Rates SDH 140 Mbit/s 34 Mbit/s Nx45 Mbit/s 100 Mbit/s 45Mbit/s 32 Mbit/s 400 Mbit/s PDH Level 4 Level 3 STM64 10Gbit/s STM16 2,48Gbit/s Page 17 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. 34 Mbit/s 8 Mbit/s 2 Mbit/s 45Mbit/s 6,3 Mbit/s 1,5 Mbit/s 32 Mbit/s 6,3 Mbit/s 1,5 Mbit/s PDH EUROPE PDH JAPAN PDH NOTH AMERICA Level 1 Level 3 Level 2STM4 620Mbit/s STM1 155Mbit/s STM16 2,48Gbit/s
  18. 18. ETSI Multiplexing structure 139 264Kb/sC-4 C-3VC-3 44 736Kb/s 34 368Kb/s x 7 x 3 x 1 x 1 x N STM-N AU-4 VC-4 TU-3 POH processing SOH TUG-3 AU-G POH POH Pointer Pointer POH Page 18 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. x 3 X 1 VC-12 C-12 VC-11 VC-2 C-11 2 048Kb/s 1 544Kb/s Pointer processing Multiplexing Mapping Aligning TU- 2 TU-12 TUG- 2 POH POH POH Pointer Pointer
  19. 19. The STM1 Frame VC-12 TU-12 TUG-2 PTrVC-12 3 time TU-12TU-12 TU-12 7 time PO H C-12 C-12 Page 19 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. TUG-3 STM-1 VC-4 AU-4 7 time TUG-2 TUG-3 TUG-3 TUG-2 TUG-2 TUG-2 TUG-2 TUG-2 TUG-2 3 time PTrAU-4 TUG-3 SOHSOH 1 time PO H
  20. 20. Basic SDH frame STM1 linear structure 32 bytes  /125µs 2430 bytes /125µs 1st line 2nd line 3rd line 4th line 5th line 6th line 7th line 8th line 9th line 2M Page 20 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. SOH STM1 PointerSOH Transmission data carried by a VC4 (payload)
  21. 21. Basic STM1 frame ITU-T structure Pointer SOH (Payload) 9 rows Page 21 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. SOH 9 Columns 270 Columns 261 Columns
  22. 22. Path and section 26 1 2 Mbit/s Sectio nVC12 path Page 22 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. 3452 Mbit/s
  23. 23. Two types of section: Regenerator : (RSOH) Multiplexing : (MSOH) RSOH RSOHRSOHRSOH STM Overhead Page 23 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Regenerato r Section MSOH MSOH Multiplexin g Section Regenerato r Section Regenerato r Section
  24. 24. The situation The economic situation in the Telecom Industry has changed... Page 24 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. ...and so has the technological approach to meet new challenges!
  25. 25. The future - as seen in 2000 SONET/SDH Network SONET/SDH for VOICE Services Seen Status Future Network Page 25 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.  One new network for both applications! LAN Fully Routed Optical IP Network Optical IP for DATA Services Future Network
  26. 26. The Status Today SDH/ SONET - is the deployed technology in the core network with huge investments in capacity! Ethernet - is the dominant technology of choice at LANs and well known at all enterprises worldwide! Data traffic is still growing, but only at a slower speed than expected Page 26 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. All network topologies focusing on a IP/Ethernet ONLY approach are shifted to long-term future. The future today:  Bring SONET/SDH and Ethernet together!
  27. 27. New Customer Applications Virtual Private Network (VPN) Core Network LAN LAN PC ServerEthernet Page 27 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Storage Area Network (SAN) Edge Network Core Network Storage Server SONET/SDH Fibre Channel
  28. 28. Bringing it all together? Core Operator wants: • Reduce Opex • Realize revenue-earning services • Use bandwidth of Core Network X Customer expects: • QoS & BW at low costs • Native Data Interfaces •  Use & Improve what he knows! LAN Voice Page 28 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Edge • Use bandwidth of Core Network • Low investment  immediate ROI •  Close the edge bottleneck! X SAN Solution: Make SONET/SDH flexible & data aware at the edge and still use the existing core! Edge Manufacturer needs: • ...to develop solutions...fast!
  29. 29. Worldwide Optical Network Equipment Market 10,000.0 12,000.0 14,000.0 16,000.0 18,000.0 MillionsofU.S.Dollars NewGen Traditional SDH/SONET Page 29 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. 0.0 2,000.0 4,000.0 6,000.0 8,000.0 1999 2000 2001 2002 2003 2004 2005 2006 Year MillionsofU.S.Dollars Traditional SDH/SONET Source: Gartner
  30. 30. Mass market Carrier Class market Asynchronous Synchronous Ethernet vs. SONET/SDH Ethernet SONET / SDH Page 30 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Dynamic Bandwidth Fixed Bandwidth Connection less Connection oriented Best Effort Service High Quality of Service How to solve all these challenges?
  31. 31. NNewew SSDH /DH / SSONETONET OOverviewverviewOOverviewverview
  32. 32. Going into Details Campus A Ethernet SONET/ SDHSONET/ SDH Campus B Ethernet FICON Page 32 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Optical CoreOptical Core NetworkNetwork Remote Servers Storage Servers Fibre Channel SONET/SDHSONET/SDH DWDMDWDM SONET/ SDH Let‘s zoom in! Core NE Edge NE
  33. 33. SONETMUX/DEMUX NativeInterfaces New SONET/SDH at the Edge ? VC LCASGFP Ethernet Ficon Edge CoreAdaptation Customer Operator Page 33 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. SONET/ SDH/ OTN SONETMUX/DEMUX NativeInterfaces ? That’s “ New SONET/SDH “ Virtual Concatenation Link Capacity Adjustment Scheme Generic Frame Procedure LAPS Ficon Escon Fibre Channel
  34. 34. Customer needs Ethernet Typical Ethernet Traffic Connections 100 75 Mbit/s Problem: How can we efficiently transport Ethernet over an existing SONET/SDH network? Customer 3 = 100M Customer 2 = 60M Page 34 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Connections 25 50 time 1 2 3 4 Ethernet Packet Example: For 10M available SDH - Containers are... VC-12 ...too small ! 2.176 Mbit/s VC-3 ... inefficient 20% 48.38 Mbit/s OR Customer 1 = 10M
  35. 35. SDH Line Rates 10 M Transport 10M Ethernet over SDH? C-11 1.600 Mbit/s C-12 2.176 Mbit/s C-2 6.784 Mbit/s C-3 48.384 Mbit/s C-4 149.760 Mbit/s SDH Payload Sizes Standard Containers are inefficient! ?5x Page 35 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. C-4-4c 0.599 Gbit/s C-4-16c 2.396 Gbit/s C-4-64c 9.584 Gbit/s C-4-256c 38.338 Gbit/s Contiguous ConcatenationContiguous Concatenation only large containers! Can’t 5 x VC-12 be concatenated?
  36. 36. VVirtualirtual CConcatenationoncatenation VC-n-X v
  37. 37. Concatenation? Contiguous Concatenation Offers concatenated payloads in fixed, large steps One towing truck (POH) for all containers All containers are on one path thru the network C4 C4 C4 C4 Page 37 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. C-4-4c 599.040 Mbit/s C-4-16c 2.396 Gbit/s C-4-64c 9.584 Gbit/s C-4-256c 38.338 Gbit/s Contiguous ConcatenationVirtual Concatenation Offers structures in a fine granularity Every container has its own towing truck (POH) Every container might take a different path VC-4-4v VC-4 #1VC-4 #2VC-4 #3VC-4 #4 VC-4-4c
  38. 38. VC Nomenclature VC-n Virtual Container n n=4, 3, 2, 12, 11 -X Number of virtually v Indictor for Virtual Page 38 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. n=4, 3, 2, 12, 11 Defines the type of virtual containers, which will be virtually concatenated. virtually concatenated containers All X Virtual Containers form together the “Virtual Concatenated Group” (VCG) Virtual Concatenation v = virtual concatenation c = contiguous concatenation Virtual Concatenated Group (VCG) of X VC-n containers!
  39. 39. High and Low Order VC VC-4 High Order Virtual Concatenation • refers to virtually concatenated... VC-3 containers Page 39 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC-11 VC-12 VC-2 Low Order Virtual Concatenation • refers to virtually concatenated... containers
  40. 40. VCG Granularity Minimum VCGs: VC-4-1v Payload Size 149,76 Mbit/s VC-4-2v Payload Size 299,52 Mbit/s VC-4-Xv Granularity VC-4 Example High Order VC: VC-4 Container Size 150,3 Mbit/s VC-4 Payload Size 149,76 Mbit/s Page 40 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VCG Payload Capacity Maximum VC-4-2v Payload Size 299,52 Mbit/s VC-4-7v Payload Size 1048,3 Mbit/s VC-4-256v Payload Size 38338 Mbit/s
  41. 41. Minimum VCG Granularity VCGs: VC-12-1v Payload Size 2,176 Mbit/s VC-12-2v Payload Size 4,352 Mbit/s VC-12-Xv Granularity Example Low Order VC: VC-12 Container Size 2,240 Mbit/s VC-12 Payload Size 2,176 Mbit/s VC-12 Page 41 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC-12-2v Payload Size 4,352 Mbit/s VCG Payload Capacity Maximum VC-12-5v Payload Size 10,88 Mbit/s VC-12-64v Payload Size 139,26 Mbit/s
  42. 42. VC Granularity and max. Capacity Nomenclature Granularity Max. Capacity VC-4 –n v 149 M - 38.3G VC-3 –n v 48 M - 12.7 G VC-4 VC-3 Page 42 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC-12 –n v 2.2 M - 139 MVC-12 Maximum Concatenation: = 256 containers Max. Capacity: = 256 x granularity
  43. 43. VC Rate Efficiencies Ethernet (10M) VC3 20% VC-12-5v  92% Fast Ethernet (100M) VC-4 67% VC-12-46v  100% Data Rates Efficiency w/o VC using VC ESCON (200M) VC-4-4c 33% VC-3-4v  100% Fibre Channel (800M) VC-4-16c 33% VC-4-6v  89% Page 43 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. 100M Ethernet STM-1 = 64 x VC-12 VC-12-5v VC-12-46v 2x 10M Ethernet VC-12-5v 8x E1 Services Example: More services integrated- by using VC! Gigabit Ethernet (1G) VC-4-16c 42% VC-4-7v  85%
  44. 44. Transporting Concatenated Signals Contiguous Concatenation VC-4-4c C-4 C-4 C-4 C-4 C-4 C-4 C-4 C-4 NENE One Path C-4 C-4 C-4 C-4 Core Network Page 44 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC-4-2v Virtual Concatenation VC-4 #2 VC-4 #1 VC-4 #1 Path 2 Path 1 VC-4 #2 Differential Delay VC-4 #2 VC-4 #1 VC-4 #2 VC-4 #1 VC-4-4cCore Network
  45. 45. Virtual Concatenation - Benefits VC Economical Re-use core network equipment  invest only at the edge Efficient & Scalable Fine granularity & multi-path capability Page 45 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC BENEFITS Well-known SONET/SDH is well engineered & reliable & trained Low Investment deployment only on customer demand  Fast ROI
  46. 46. Challenges ahead... How can path bandwidth be increased or decreased?   Dynamic Bandwidth Provisioning  “..bring an additional truck on the road..” VC-3 #1VC-3 #2 VC-3 #? Page 46 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. VC-4 #1VC-4 #3 FAILED How can we ensure QoS for data services?   VCG - Protection one VC container fails - the whole Virtual Concatenation Group (VCG) fails!
  47. 47. Bandwidth on demand Bandwidth “Call-by-Call” NG NG Network Management VC-12-3v LCAS Page 47 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Transport Network NG NG ISP Customer’s LAN Customer  rents a 6M Internet connection (VC-12-3v)  calls to get additional 2M! Operator  will provision additional VC-12 path  ..and will hitless add it to existing connection via LCAS! +VC-12 LCAS
  48. 48. Bandwidth on demand Bandwidth on Schedule Transport Network NG NG 100M 100M 900M900M 100M 900M Page 48 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Location A Location B Offer a fixed bandwidth schedule: 24/7 - Virtual Local Area Network service at 100M Ethernet Every night for one hour - additional 900M ESCON service for data backup  New revenue opportunities at low traffic hours! 900M900M 900M
  49. 49. Bandwidth on demand Ethernet Traffic 1st VC-12 2nd VC-12 3rd VC-12 Variable VCG capacity Automatic Bandwidth Allocation - pay as you grow! Page 49 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. t 1 2 3 4 VCG capacity Automatic Bandwidth Allocation: Automatically, pre-provisioned VC capacity will be activated No paid, but unused link capacity for the customer Customized SLA possible!  Optimal bandwidth for the customer for min. $$  New revenues with pay per use & over-subscription!
  50. 50. LLinkink CCapacityapacity AAdjustmentdjustmentAAdjustmentdjustment SSchemecheme
  51. 51. Los Angeles Seattle Dallas Washington Chicago San Francisco San Jose Atlanta New York Boston Kansas City Denver Columbus Los Angeles Seattle Dallas Washington Chicago San Francisco San Jose Atlanta New York Boston Kansas City Denver Columbus Location B Bandwidth Provisioning - today Page 51 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Houston OrlandoHouston Orlando Location A 50Mbit/s Ethernet Private Line (VC-3-1v/ STS-1-1v) The customer now requires 100Mbit/s But: Traffic will be interrupted to bring 100M into service!! Operator manually sets up a 2nd path  using the network management system  100M = VC-3-2v / STS-1-2v
  52. 52. LCAS Overview Link Capacity Adjustment Extension for Virtual Conc.  carried in H4/K4 byte Add/Remove bandwidth uninterrupted Page 52 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Adjustment Scheme End-to-end Real-Time Communication Standardized ITU-T G.7042, referred by ANSI Handshake Protocol between edge NE
  53. 53. Los Angeles Seattle Dallas Washington Chicago San Francisco San Jose Atlanta New York Boston Kansas City Denver Columbus Los Angeles Seattle Dallas Washington Chicago San Francisco San Jose Atlanta New York Boston Kansas City Denver Columbus LCAS - Add Bandwidth hitless Location B NE NE Page 53 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Houston OrlandoHouston Orlando Operator manually provisions add. 50M path Location A Operator installs VC & LCAS edge equipment LCAS protocol runs between the two edge NE! NE negotiate - when the additional path gets valid and into service! LCAS Succeeds  A connection with 100M is in service!
  54. 54. Link Capacity Adjustment Scheme LCAS Cost Efficient New NE necessary only at the edge Transparent to core network Enables Value added services Bandwidth on demand ”Soft” Protection 99.999% up-time Page 54 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. LCAS BENEFITS Flexible & scalable Offers variable VC bandwidth in real- time! Restoration Virtual Concatenation link protection & recovery
  55. 55. Challenges ahead Efficient & suited mappings for all diverse data clients!  “...one mapping fits all...?!?” SONET/SDH Page 55 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Rate adaptation between asynchronous clients and synchronous transport network Asynchronous Rates Synchronous Rates
  56. 56. GGenericeneric FFramerame PProcedurerocedurePProcedurerocedure
  57. 57. SONETMUX/DEMUX NativeInterfaces New SONET/SDH at the Edge ? VC LCASGFP Ethernet Ficon Edge CoreAdaptation Customer Operator Page 57 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. SONET/ SDH SONETMUX/DEMUX NativeInterfaces ? That’s “ New SONET/SDH “ Virtual Concatenation Link Capacity Adjustment Scheme Generic Frame Procedure LAPS Ficon Escon Fibre Channel
  58. 58. GFP Overview Generic Frame Data En- capsulation for various services Rate Adaptation Mechanism Page 58 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Frame Procedure Asynch. clients over synchronous networks Standardized ITU-T G.7041 referred by ANSI
  59. 59. SANs FICON ESCON Ethernet DVI HDLC Frame Relay POS DATA (IP, IPX, MPLS,...) RPR FibreChannel Voice Video Private Lines The Big picture Page 59 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. ATM HDLC Fiber GFP-T SONET/SDH WDM / OTN GFP-F GFP
  60. 60. GFP - Layer Model GFP - Client Specific Aspects (payload dependent) GFP - Common Aspects Ethernet IP/PPP Fibre Channel OthersClients GFP Frame Mapped Transparent Mapped ESCON Page 60 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. GFP - Common Aspects (payload independent) SONET/SDH VC-n Path OTN ODUk Path Others (e.g. Fibre) Transport
  61. 61. Generic Frame Procedure G.7041 Generic Frame Procedure defines  Client encapsulation - for transport over SONET/SDH or OTN networks  Frame formats - for various clients  Mapping Procedures - for client signals into GFP Page 61 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Why do we need a new framing procedure?  simple and scalable traffic adaptation for different transport rates  flexible approach for data transmission which requires stringent delay, QoS
  62. 62. SStructuretructure ooff GGFPFP -- FFramesramesGGFPFP -- FFramesrames
  63. 63. Core Header GFP Frame Overview Client Payload Field Payload Headers gives type of client and supports client specific management procedures  Includes CRC detection & correction  Length 4 to 64 byte Payload Headers Core Header contains the length of the payload area  and start of frame info  and CRC-16 error detection & correction  Length 4 byte Page 63 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. Payload Area 8 bit GFP Payload Area transports higher layer specific information  Length 4 to 65535 byte Client Payload Field contains client frames (GFP-F) or client characters (GFP-T) Client Payload Information Optional Payload FCS protects the client payload information field  CRC-32 Length 4 byte Optional Payload FCS GFP gets scrambled before transmission!
  64. 64. GGFPFP -- OOperationperation MModesodesMModesodes
  65. 65. GFP Operation Modes GFP-T (Transparent Mapped):  Client characters are directly mapped in GFP-T 00 GFP-F (Framed Mapped):  For packet oriented clients, e.g. Ethernet  One Client Packet = packed in one GFP frame (1:1)  Minimal overhead Page 65 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. GFP IDLE Frame:  Rate Adaptation (“stuffing”) GFP Management Frame:  under study  Client characters are directly mapped in GFP-T frames e.g. Fibre Channel  Fixed length GFP frames  Minimal Latency
  66. 66. GFP Operation Modes 1GigE GFP-F Frame by Frame GFPEthernet FrameGFP GFP GFP EthGFPGFPEth. Frame variable Page 66 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. GFP-T 1GigE IDLELE EthEth. Frame IDLEEthernet Frame TransparentGFP TransparentGFP TransparentGFP GFP GFP GFP Header or IDLE frames Block by Block fixed GFP
  67. 67. GFP-F Client vs. Transport Rate Variable Client Rate GFP-F Mbit/s F I F O IDLEs + M a p p e Constant Transport Rate Mbit/s Page 67 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. t O GFP-F Mapper +e r t GFP-F IDLEs Client Ethernet Fast Ethernet Gigabit Ethernet IP PPP
  68. 68. GFP-T Client vs. Transport Rate M a p p Decoder / Coder 100+x % GFP-T Mbit/s Constant Client Data Rate 100 % Mbit/s Constant Transport Rate Page 68 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. GFP-T Mapper p e r / Coder t Effective Payload Client IDLEs Fibre Channel ESCON FICON Gigabit Ethernet 10 GigE Anything! t GFP Overhead Effective Payload Client IDLEs
  69. 69. Generic Frame Procedure GFP Reliable Easy & stabile algorithm Header Correction Expandable with no need for new transport equipment Page 69 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved. GFP BENEFITS New Opportunities Technological & Economical Compatible works with basically any higher layer service and lower layer network!
  70. 70. Granularity at VC12 level in Switch Matrix to ensure compactness and effective use of container capacity. DCC Transparency to ensure Network management in Multi Vendor Environment Open interface for NMS - CORBA Additional issues – for New GEN. SDH Page 70 May 2007 SPCNL / SLW / SCM TR Copyright Siemens Public Communication Networks (Pvt.) Ltd., 2007. All rights reserved.
  71. 71. TThankhank yyou!ou!TThankhank yyou!ou!

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