The Declarative-Coordinated Model for Self-Optimization of Service Networks
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The document discusses a declarative-coordinated model for self-optimization of service networks, focusing on cloud networking, virtual network embedding (VNE), and the complexities involved. It emphasizes the importance of autonomy and coordination among network operators to efficiently manage resources and improve end-to-end performance. The proposed model aims to offer a solution to the challenges of optimizing service networks in a non-cooperative environment.
The Declarative-Coordinated Model for Self-Optimization of Service Networks
- 1. Marat Zhanikeev [email protected] maratishe.github.io 2016/01/21@NS研＠博多 The Declarative-Coordinated Model PDF: bit.do/160121 for Self-Optimization of Service Networks #VNE #SDN #NGN #QoS #agents #autonomy #probing #networkmanagement
- 2. . This Talk is about Cloud Networks • a network of DCs is a cloud -- say, Amazon EC2 with 9 regions • a network of clouds is a federation -- say, Amazon x 1dc + IDCF x 20dcs in Japan ◦ we already start hitting the heterogeneity wall, since there is no solution yet, no such federations exist today, but some are planned 03 • .. moving further to network edge, we find Akamai with its 30k+ cloudlets 02 -- a class of its own ◦ heterogeneity problem? in hardware NO, but in e2e network performance STRONG YES ◦ but, Akamai has all the control, so, they manage to balance the load properly • ... now, having incorporated all the devices at network edge you have the fog cloud • ... on a side note... why cloud networks? ... well, because most networking soon will be done inside and/or by clouds 03 "Chameleon project" https://www.chameleoncloud.org (2014) 02 B.Frank+8 "Pushing CDN-ISP Collaboration to the Limit" ACM SIGCOMM Computer Communication Review (2013) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 2/17 ... 2/17
- 3. . Cloudification Timeline and Scope WiFi Scale/sizeofcloudifieditems Timeline Mid-2015 Probably should not cloudify Should definitely cloudify Data Centers Racks IoV > VC Desktop APs, Beacons Smartphone Sensor IoT Delegated networking M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 3/17 ... 3/17
- 4. . One Cloud Service . VNE Problem .. ....stands for Virtual Network Embedding APP Cloud/DC APP APP VM Container APP Cloud/DC APP APP …. • service can provide the graph of its apps • graph can include end users in form of DC-user e2e network performance • federated cloud known its actual topology and can use VNE to map 04 04 M.Zhanikeev "A New VNE Method for More Responsive Networking in Many-to-Many Groups" 7th ICUFN (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 4/17 ... 4/17
- 5. . OSPF, QoS Routing → VNE • OSPF optimizes one parameter (cost/weight) for one physical graph, and is NP Hard • QoS Routing optimizes multiple parameters for one path, and is NP Hard • VNE maps one virtual graph on top of a physical graph and is NP Hard-er? ◦ both OSPF and QoS Routing generalize into a VNE problem if complexity is ignored M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 5/17 ... 5/17
- 6. . VNE: Virtual Network Embedding . VNE is all about... .. . ... multiple virtual graphs mapped onto one real/physical topology/graph Physical layer Virtual Layer1 VN Request 2 Make VN 3 VN Reply 4 Virtual Virtual Physical 1. service sends the request in form of a virtual graph 2. NOC casts its magic 04 -- here we depend on a good VNE heuristic (so far, non-existent) 3. the mapping (IPs, ports, etc.) is returned back to the service or, otherwise, the request is denied 4. the service uses its new service network 04 M.Zhanikeev "A New VNE Method for More Responsive Networking in Many-to-Many Groups" 7th ICUFN (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 6/17 ... 6/17
- 7. . The Half-Way Point M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 7/17 ... 7/17
- 8. . Solution to the Complexity Problem . The Obvious Solution is... .. .... the DiY design, that is, to let services self-optimize • however.... ◦ it is one thing to self optimize in a non-cooperative environment ◦ ... and quite another when clouds offer tools/envs/platforms that help self-optimize better . Cloud Probing Technology... .. ....is the best choice for non-cooperative environments M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 8/17 ... 8/17
- 9. . DiY (1) DC Probing • visualization of active probing across 8 Amazon regions 05 california ireland oregon saopaulo singapore sydney tokyo virginia same DC large bulk transfer california ireland oregon saopaulo singapore sydney virginia DC - other DC e2e delay 05 M.Zhanikeev "Performance Management of Cloud Populations via Cloud Probing" IPSJ JIP (related to http://goo.gl/f3QpiW) (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 9/17 ... 9/17
- 10. . DiY (2) Heroku Probing • this time probing between Amazon VMs and heroku dynos • obvious outcome (figures are vector=zoomable): heroku lives in Virginia DC • see details in 14 14 M.Zhanikeev "Heroku is Best Modeled as a Bottle" http://goo.gl/j6JzPz (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 10/17 ... 10/17
- 11. . The Declarative-Coordinated Model M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 11/17 ... 11/17
- 12. . Declarative-Coordinated Model . It is all about... .. . ...each provider declaring its own resources autonomously to facilitate coordination when optimizing service networks Network Provider s (NOC) Agent Service Traditional agents True Autonomy • declaration ◦ each NOC creates and declares its own resources ◦ example: e2e circuits to other domains? • autonomy ◦ the point is that declaration can be done completely autonomously, no need for global QoS management like in NGN • coordination ◦ under autonomy, optimization can be achieved via coordination, instead of the traditional VNE with the NP-Hard level complexity M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 12/17 ... 12/17
- 13. . The New NOC NOC AgentsService Local monitoring Req /Rep Optimize (VNE) Discover S-A Coordination A-A Coordination N-A Coordination TraditionalProposed M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 13/17 ... 13/17
- 14. . Numeric Analysis M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 14/17 ... 14/17
- 15. . Abilene Network and Setup . Abilene Network .. . ...11 nodes, 27 links, a real network in US, only topology is used, while node/link capacities are ignored (set to unit measures) • VNE: implemented a standard method, see review at 04 • Proposal: each node in a free agent, the service communicates to each and selects the one that provides the best choice at a given time -- the same stress (but distributed) is used 04 M.Zhanikeev "A New VNE Method for More Responsive Networking in Many-to-Many Groups" 7th ICUFN (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 15/17 ... 15/17
- 16. . Results 0 2.95 5.9 8.85 11.8 14.75 17.7 20.65 23.6 26.55 Decreasing order 0 20 40 60 80 100 Linkcongestion VNECoordination (proposed) Link states 0 2 4 6 8 10 Decreasing order 1.68 1.74 1.8 1.86 1.92 1.98 2.04 2.1 2.16 2.22 Nodecongestion Node states • link congestion is in % • node congestion is profile from 04 -- log of sum of link congestions, basically • one episode -- kept adding hub-n-spokes virtual networks until full • coordination method drastically outperforms the traditional VNE 04 M.Zhanikeev "A New VNE Method for More Responsive Networking in Many-to-Many Groups" 7th ICUFN (2015) M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 16/17 ... 16/17
- 17. . That’s all, thank you ... M.Zhanikeev -- [email protected] The Declarative-Coordinated Model for Self-Optimization of Service Networks -- bit.do/160121 17/17 ... 17/17