Technology Advancements and Network Applications for Optical Burst Transport Networks

Transcription

1 echnology Advancements and Network Applications for Optical Burst ransport Networks Kent Jordan r. Manager Optical Network Marketing Huawei echnologies HUAWEI EHNOOGIE O., D.

2 Agenda Optical Burst technologies echnology viability Potential Benefits calability Applications Metro to ore aggregation PON-like data services Next-generation intra-data center switching ow latency metro access ontent delivery ummary and Q&A Huawei Optical Networks Research

3 Optical Burst ransport Network Viability Many implementations of OB/OP require fast, flexible optical buffers, and complicated scheduling to guarantee switching performance Huawei has adopted a novel approach to Optical Burst technology called Optical Burst ransport Network or OBN which minimizes dependencies on complex optical components WDM + ON + witch OP / OB OBN Number of ayers Number of ransponders High Greatly reduced Greatly reduced Electrical X / witch arge Greatly reduced Greatly reduced Photonic omponents ow Requirements Very High Requirements Medium-High Requirements Flexible Optical Buffer N/A arge / Many, FD arrays are feasible but scalability is an issue Burst Mode ransceiver N/A 10Gbps is available, scalability to 100G is challenging None calable to 100G+ Fast Optical Burst elector N/A mall scale Fast optical switches are available. arger scale fast optical switches or fast tunable optical filters on the horizon Optical Burst Amplification N/A May be challenging for multiwavelength signals implified design, many options, feasible today Near-term Viability Deployed today Poor Good Huawei Optical Networks Research Page 3

4 ayer onvergence urrent optical networks utilize λ-granularity switching at 0 (optical layer) and rely on 1 and 2 for aggregation / grooming / switching of sub-λ traffic 2 witch O/E E/O witch O/E E/O witch O/E E/O E/O O/E E/O O/E E/O O/E 1 ON X ON X ON X O/E E/O O/E E/O O/E E/O 0 ROADM NGWDM ROADM NGWDM ROADM NGWDM Unified 0&1&2 Fast optical switch Fast optical switch Fast optical switch OBN facilitates sub-λ burst switching and reduces costly O/E/O conversion and hidden costs due to layer transitions Huawei Optical Networks Research Page 4

5 ompatibility with urrent WDM/ON Networks OBN can co-exist or be co-deployed with WDM/ON networks upports fixed-wavelength transmitters (Fx) and does not require fast unable x Works across existing line amplifiers, ROADMs, etc. ame physical infrastructure Different logical networks WDM/ ON line card (R)OADM WDM/ ON line card Burst ADM OBN line card OBN line card ards can be deployed in the same physical shelf OBN may also share the same networking architecture with ON to enable all-optical multiplexing and cross connection of ODUs raditional ON O ODU O ODU O ODU HO ODUk OUk Oh OBN OB hannel OB hannel OB hannel OU OU OU Oh Huawei Optical Networks Research Page 5

6 OBN calability OBN ine Rate OBN technology has been demonstrated at 10Gbps line rates, and exhibits scalability to 100Gbps and beyond 400G 1 10G 40G 100G OF 2011 OBN Distance OBN technology scales to access and metro distances, but can be applied to H and UH technologies in the future <50km 100km 500km 1000km 1000km+ Huawei Optical Networks Research Page 6

7 Access and Metro Network Applications Metro-Access Facilitates high-bw access to end-users / businesses ong reach (100 km), wide coverage (>1000 users) via WDM+DMA Metro-Aggregation Decreases no. of transponders and network latency imple upgrade to higher line rates Metro-ore upports distributed services, realizes sub-wavelength bypass Reduces capacity and power constraints of core routers / electrical switches tar topology Ring topology Mesh topology MAN BRA/BA/ ME/BNG Router Huawei Optical Networks Research Page 7

8 Metro Aggregation and Access Applications Metro Ring Aggregation Node Node Node Node 3 Optical burst ring with multi-granularity flexible bandwidth provisioning and dynamic bandwidth allocation upports sub-λ and λ granularity services upports multiple service types Ethernet / IP Video services DM ompatible with current WDM systems upports Dynamic Bandwidth Allocation (DBA) PON-like Access for Business ervices 1 2 plitter MUX/DEMUX DMA OA WDM OA entral Office WDM+DMA metro-access architecture utilizing relatively mature devices and PON control schemes uitable for PON-like business services upports >1000 users (e.g. 32 λ x 32 split ratio) with up to 100km reach without O/E/O Improves upstream bandwidth vs. traditional PON architectures Huawei Optical Networks Research Page 8

9 Next-Generation Data enter Intra-networking EOR (End of Row) EOR OR (op of Rack) OR ypical data center network architecture utilizes a tree structure here is a significant amount of traffic between ORs (~ 80% of traffic, large packet flows) raffic between ORs is switched via EORs Requires many line cards & switch cards : line card : tributary (server access) card : switch card X: OBN alloptical switch card X By applying OBN, transmission and (distributed) switching are realized at ORs, and EORs can be saved X X X Huawei Optical Networks Research Page 9

10 ow atency Metro ervices Amazon: Every 100ms of latency costs 1% in sales Google and Bing: low page loads can significantly affect usage, especially delays > ms (Velocity 2009 O Reilly conference) Financial (High Frequency rading): If a broker s electronic trading platform is 5 ms behind the competition it could lose them at least 1% of their flow and 10ms of latency could result in a 10% drop in revenues (ABB Group 2008) Electrical latency Optical latency OBN is an all-optical technology which drastically reduces delay associated with Electrical switching and processing Reduces layer transitions and associated delay calable to higher bit-rates Huawei Optical Networks Research Page 10

11 ontent Delivery / Video Distribution Movie production house National distribution porting event Regional distribution Editing, postproduction Metro / access distribution ontent delivery and Video distribution Movie theater ransport vs. ache OBN can reduce video transport and distribution cost Video distribution and delivery of master digital file from movie house or sporting events to editing / post-production and content providers Accommodates short term peak demand on DN networks such as rewatching a previous sporting event game when a team makes it to the uper Bowl or World up finals Huawei Optical Networks Research Page 11

12 Key echnology Benefits Reduce transponders; offers dynamic bandwidth utilization O/E/O not required at intermediate nodes Better bandwidth utilization through DBA hift 1/2 X functions to 0 Optical-layer enables switching bypass and provides aggregation functions ayer convergence provides power consumption savings WDM networks OBN ~N 2 transponders Fixed bandwidth ~N transponders tatistical mux. urrent networks OBN Upgradeable and co-exists with today s WDM networks Optical-layer switch independent of modulation format and line rate OBN ring compatible with WDM/ON Viable for near-term development OBN does not require optical buffers or memory A pragmatic evolution towards all-optical router / all-optical networking 10G 40G 100G OBN X OA Band filter OBN ine Board FF WDM ine Board Band filter P-to-P WDM F-OADM ROADM OBN OB OP Huawei Optical Networks Research Page 12

13 ummary Optical Burst witching technologies are becoming more viable Novel approaches to implementation can alleviate the dependencies on advanced optical components, such as the Holy Grail of optical networking the optical buffer hese technologies have the potential to greatly reduce transport costs via layer convergence and elimination of costly O/E/O and electrical processing at various layers here appear to be a variety of applications for this technology Metro aggregation, Intra-data center connectivity, PON-like high bandwidth business services, Video and content distribution Huawei believes OBN is viable in the near-term and as scalability requirements are satisfied, it can scale to higher speed line-rates and to distances beyond the metro area network Huawei Optical Networks Research Page 13

14 hank You Huawei echnologies