ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths
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1 ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths G. Karmous-Edwards, D. Reeves, L. Battestilli, P. Vegesna, A. Viswanath, G. N. Rouskas Department of Computer Science North Carolina State University Supported by DARPA under Grant No: HR ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.1
2 Outline Dynamic Optical Networking: Vision vs. Reality Edge Reconfigurable Optical Networks (ERONs) ERON Dimensioning Simulation Results ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.2
3 Dynamic Optical Networking Vision: E2E transparent lightpaths with optical switching Hundreds of λs On-demand optical connections Highly reconfigurable core networks ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.3
4 Dynamic Optical Networking Vision: E2E transparent lightpaths with optical switching Hundreds of λs On-demand optical connections Highly reconfigurable core networks Reality: P2P connections with OEO Few λs Long-lived, leased lightpaths Mostly statically configured core networks ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.3
5 Dynamic Optical Networking Vision: (DARPA CORONET) E2E transparent lightpaths with optical switching Hundreds of λs On-demand optical connections Highly reconfigurable core networks Reality: P2P connections with OEO Few λs Long-lived, leased lightpaths Mostly statically configured core networks ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.3
6 Application Requirements vs. Infrastructure Limitations Application and Research Collaboration Requirements: Lightpaths across multi-domain networks Distributed coordination of network & network-attached resources Connection establishment/termination based on user requirements ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.4
7 Application Requirements vs. Infrastructure Limitations Application and Research Collaboration Requirements: Lightpaths across multi-domain networks Distributed coordination of network & network-attached resources Connection establishment/termination based on user requirements Infrastructure Limitations: Lack of capabilities for rapid/automatic lightpath establishment High administrative burden coordinate multiple providers High cost of (semi-)permanent lightpaths ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.4
8 Static Topologies Collection of independent lightpaths; assembled by NRENs academic/research communities large government/private organizations ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.5
9 Static Topologies Collection of independent lightpaths; assembled by NRENs academic/research communities large government/private organizations Each lightpath: established on an as needed basis dedicated between two end-users high-end devices, instruments,... held in place for long time periods (> months) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.5
10 Challenges Applications require sporadic access to lightpaths extremely low utilization Dedicated lightpaths only available to small fraction of potential users ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.6
11 Utilization (1) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.7
12 Utilization (2) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.8
13 Utilization (3) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.9
14 Edge Reconfigurable Optical Networks ERON goal: transform a set of static optical connections into a flexible network topology that affords users the ability to reserve on demand, or in advance, lightpaths for any desired duration ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.10
15 Edge Reconfigurable Optical Networks ERON goal: transform a set of static optical connections into a flexible network topology that affords users the ability to reserve on demand, or in advance, lightpaths for any desired duration Overlay network: optical switching capabilities at edge nodes under user (not network provider) control ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.10
16 ERON Components 1. A collection of permanent lightpaths leased, connect organization s sites define static logical topology ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.11
17 ERON Components 1. A collection of permanent lightpaths leased, connect organization s sites define static logical topology 2. Edge hardware under user control MEMS optical switches Ethernet switches Short-reach optical interfaces ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.11
18 ERON Components 1. A collection of permanent lightpaths leased, connect organization s sites define static logical topology 2. Edge hardware under user control MEMS optical switches Ethernet switches Short-reach optical interfaces 3. Control software implements control overlay GMPLS signaling resource broker ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.11
19 ERON ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.12
20 ERON Benefits Dynamic connections over static topology Multihop connections (transparent to network provider) Lightpath sharing among multiple users Increased degree of connectivity Higher utilization Amortization of high resource cost over many users/applications ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.13
21 EnLIGHTened Computing Testbed ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.14
22 Research Question ERON deployment costs: hardware and software expense (one-time, mostly) possibility of blocking ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.15
23 Research Question ERON deployment costs: hardware and software expense (one-time, mostly) possibility of blocking Savings? reduced number of lightpaths blocking probability 10 3 QoS metric ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.15
24 Research Question ERON deployment costs: hardware and software expense (one-time, mostly) possibility of blocking Savings? reduced number of lightpaths blocking probability 10 3 QoS metric Objective: quantify practically achievable benefits no attempt to find optimal solutions ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.15
25 ERON Topology Design ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.16
26 ERON Topology Design 1. Start with static topology link capacities 2. Run simulation link utilizations 3. Consider each link in isolation Erlang-B target link utilization 4. Reduce capacity of link with smallest relative link utilization 5. Repeat from Step 2 while BP< 10 3 ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.16
27 Assumptions: Topology M = 100 users (end-devices) D = 3 domains N = 20 nodes ( MEMS switches) N L = 6 large nodes (including N R = 4 relay nodes) N S = 14 small nodes Domains under different administrative control lightpaths terminate at boundaries end-to-end lightpaths intra-domain lightpaths end-to-end lightpath consists of 1 3 intra-domain lightpaths ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.17
28 Three-Domain Topology Relay Node Relay Node Small Node Domain 1 Domain 2 Domain 3 Large Node Relay Node Relay Node ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.18
29 Three-Domain Topology Relay Node Relay Node Small Node Domain 1 Domain 2 Domain 3 Large Node Relay Node Relay Node ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.18
30 Assumptions: Traffic Lightpath capacity: 10 Gbps Traffic distribution: 40% Large-Large 40% Large-Small 20% Small-Small Traffic Pattern: uniform distance decreasing distance increasing ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.19
31 Simulation Scenarios Low traffic scenario aggregate traffic: 5, 10, 100, 150, 200, 250, 300 Gbps High traffic scenario aggregate traffic: 1.0, 1.5, 2.0, 2.5, 3.0 Tbps ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.20
32 Topology Visualizations: Low Traffic, 100 Connections Static topology: 141 LPs ERON: 114 LPs ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.21
33 Topology Visualizations: Low Traffic, 200 Connections Static topology: 254 LPs ERON: 143 LPs ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.22
34 Topology Visualizations: Low Traffic, 300 Connections Static topology: 376 LPs ERON: 173 LPs ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.23
35 Low Traffic Scenario: Effect of Traffic Amount K=100, BP=0.001 Dist-Dec Uniform Dist-Inc 40 % Decrease in Lightpaths Aggregate Traffic (Tbps) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.24
36 Low Traffic Scenario: Effect of # of Connections GBps, BP= % Decrease in Lightpaths Number K of Static Connections Dist-Dec Uniform Dist-Inc ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.25
37 High Traffic Scenario: Effect of Traffic Amount K=1000, BP=0.001 Dist-Dec Uniform Dist-Inc 50 % Decrease in Lightpaths Aggregate Traffic (Tbps) ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.26
38 High Traffic Scenario: Effect of # of Connections TBps, BP=0.001 Dist-Dec Uniform Dist-Inc 60 % Decrease in Lightpaths Number K of Static Connections ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.27
39 Summary ERON overlay control networks: medium-term solution static topologies ERON reconfigurable core Easy to implement and deploy use existing hardware and software technology Substantial benefits: user-controlled dynamic optical networking lightpath savings sharing higher utilization, degree of connectivity low blocking ERONs: Dynamic Optical Networking via Overlay Control of Static Lightpaths ONDM 2009, February 18, 2009 p.28
Dynamic Optical Networking via Overlay Control of Static Lightpaths
Dynamic Optical Networking via Overlay Control of Static Lightpaths George N. Rouskas Department of Computer Science North Carolina State University Joint work with: G. Karmous-Edwards, D. Reeves, L. Battestilli
JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 27, NO. 12, JUNE 15, [Online]. Available: /$25.
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