Network Platform for Creating Services over Virtualized Networks

Transcription

1 Network Platform for Creating Services over Virtualized Networks August 24, 2012 Toru Hasegawa KDDI R&D Labs.

2 Outline Introduction Toy Programming Environment Network Platform Example Service Conclusion Acknowledgement 2 copyright by KDDI R&D Labs., The University of Tokyo, NEC and HITACHI

3 Introduction Virtual Network Service Infrastructure Project 1) The goal is to develop a network virtualization platform of achieving all the requirements below Funded by NICT, from 2011 to 2015 Requirements to Network Virtualization 2) Isolation of resources, Security, Scalability, Evolvability, Performance, Programmability and Management Network Platform for Flexibly-Programmable Advanced Service Composition over Virtualization Network Subproject The goal is to develop the technologies of supporting programmability and management KDDI R&D Labs, The University of Tokyo, Hitachi and NEC 3 1) 2) A. Nakao, Network Virtualization as Foundation for Enabling New Network Architectures and Applications, IEICE Transactions on Communications, Vol. E93B, Issue 3, pp , March 2010.

4 Network Platform for Creating Services over Virtualized Networks 4 What s a network platform? Programming and execution environment where anyone can easily program network services in a slice over a virtualized network Goals of Platform Programmability Toy block programming environment wherein a service is programmed as toy blocks would be assembled Service: a collection of network functions of nodes The main objective is to encourage a service designer to re-use of codes implemented by others instead of implementing them for themselves Codes of implementing protocol mechanisms. Management Execution environment where toy blocks are distributed to nodes in a slice reduces burdens of service Extending slices to different domains (Federation) in order to provide large scale tests copyright by KDDI R&D Labs., The University of Tokyo, NEC and HITACHI

5 Architecture: Toy Programming Framework User Interface Service = sofnodeslivers Distributed to node slivers in a slice Interface Layer Functional Unit Assembling blocks Component Component Composite Layer Component Interface Component Output Component Layer Component 5 copyright by KDDI R&D Labs. and The University of Tokyo Input

6 Toy Programming Framework: Current and Future Current : Modular Framework like (ex) SILO, RNA, x-kernel 6 Focuses on a program run on a single node s (modules) are assembled in a single node The frameworks supports how blocks in a node are connected Future : DHT TCP IP L2/PHY VM SMC (Secure Multiparty Computation) DHT (Distributed Hash Table) DHT SMC SMC TCP TCP IP DHT TCP IP DHTIP L2/PHYTCP IP L2/PHY TCP L2/PHY L2/PHY IP IP IP L2/PHY L2/PHY L2/PHY Focuses on program run on multiple nodes for providing a service ex) DHT service, SMC service s (Functional Units) on different nodes are assembled to a service The framework supports how blocks in multiple nodes are connected. Interface checking blocks in multiple nodes VM (Virtual Machine) copyright by KDDI R&D Labs DHT SMC reliable transport unreliable datagram delivery TCP TCP TCP IP IP IP IP VM VM VM VM VM VM VM

7 Overview of Network Platform Service Design Tool Functional Unit Programming a service as toy blocks would be assembled Service Deployment Tool Distributing functional units to virtual nodes in a slice Slice Exchange Point Federation to other virtual networks Access network Control Accomodating mobile devices スライス Node Sliver ( 仮想ネットワーク ) (Virtual node) Domain A Node Slice Domain B 7 copyright by KDDI R&D Labs., The University of Tokyo, NEC and HITACHI

8 Flow of Programming and Deploying a Service Definition eth (XMLFile) IP TCP Programmer (Programming a ) Slice Designer Service Blueprint (XMLFile) Node 2 Node 1 IP Node 4 TCP TCP eth0 eth1 IP IP eth0 eth1 Node 3 eth0 eth1 IP eth0 eth1 Service Designer Service Design Tool Slice Definition (XMLFile) Node 1 eth0 eth1 Node 2 eth0 eth1 Node 3 Node 4 eth0 eth1 Service Operator Service Deployment Tool eth0 eth1 8 copyright by KDDI R&D Labs. and The University of Tokyo

9 Service Design Tool Service Blueprint Design Tool Editing a service blue print Outputting an XML file of service blue print Invocation, edition Service Blueprint Design Tool Service Layout Plan Design Tool Reading a slice definition and a service blueprint Outputting a file specifying which blocks are allocated to which nodes Service Layout Plan Design Tool 9 copyright by KDDI R&D Labs. and The University of Tokyo

10 Implementation of Network Platform Node Sliver Service Service Blurprint Service Blueprint Node Sliver Contoller sshd Linux Kernel Library Click End User Service Operator Service Controller Service Control Node Network Platform Node Sliver Link Sliver Node Sliver Node Sliver Slice (Virtual Network) Control Plane for Distributing s 10 Virtualized Network Infrastructure Physical Network copyright by KDDI R&D Labs. and The University of Tokyo

11 Service Deployment Tool Click ex.) IP Routing Control, Routing Table Search User Process (Socket Program) ex.) Web server, Transcoder Service Control Node Node Sliver Service Controller User Space Node Sliver Controller sshd User Process User Process Click Click Clock User Level Click Driver TCP/IP Stack Kernel Space TCP,UDP/IP Satck Kernel Leve; Click Driver Click Click eth eth0 eth1 eth2 eth3 eth4 Control Plane To Other Node Slivers Link Sliver 11 copyright by KDDI R&D Labs. and The University of Tokyo

12 How a service is deployed 1Slice Creation Service Operator Slice Definition Virtualized Network Infrastructure Service Controller Resource Allocation Node Sliver (sshd) 2Service Deployment Service Allocation Plan, Slice Definition, Definition Node Sliver Control port Information Request Controller Control Port Information Node Sliver Controller Install and Invoke denifinition Install 3Service Invocation Service Invocation Service Invocation Invocation 12 copyright by KDDI R&D Labs. and The University of Tokyo

13 Slice Exchange Point (1) Slice Exchange Point SEP enables the federation (slice creation/deletion/modification, resource information exchange) between heterogeneous virtualization infrastructures. SEP introduced the common APIs to federate many types of infrastructures. Virtualized Network Infrastructure A Controller Slice Exchange Point (SEP) Virtualized Network Infrastructure B Contoller Slice GW SEP Core GW Slice Federated slice across the two infrastructures APIs Proprietary To Infrastructure A Common APIs Common APIs APIs Proprietary To Infrastructure B 13 copyright by KDDI R&D Labs. and HITACHI GW : Gate Way SEP : Slice Exchange Point

14 Slice Exchange Point (2) Platform-A Control system APIs Proprietary To Infrastructure A (Slice creation/deletion/ modification, resource info, etc) GW APIs/parameters conversion differential absorption function Common APIs for SEP (Slice creation/deletion/ modification, resource info, etc) SEP CORE Slices (Node slivers, Link slivers) Data-plane conversion 14 copyright by KDDI R&D Labs. and HITACHI

15 Implementation Status The prototype implementation of platform is done. The prototypes of service design/deployment tools have been implemented. The prototype of SEP has been implemented, too. Implementing services over the platform is on going. Disaster Victim Information Query Service Service wherein functional units (blocks) are replicated or reduced Intelligent Cache Service etc. 15

16 Service Example 1: Disaster Victim Information Discovery Query service provides how many disaster victims are at which evacuation sites When a disaster occurs, a slice for victim information discovery is created Disaster victims uploads at which evacuation sites they are Such information pieces are searched and collected by the collectors and then are finally stored at the store Query Sever Information Collector Slice Information Store Information Collector Web Browser Information Collector Node Sliver Wireless -link 16 Rescue Person copyright by KDDI R&D Labs Ad-hoc link

17 Service Blueprint Slice CGI Apache INET,Stream TCP/IP Query Interface INET,Stream MySQL SQL/UNIX Stream Information manager TCP/IP INET,Stream MySQL SQL/UNIX Stream Information Name server collector dynamic DNS/INET Stream INET, Dgram INET,Stream TCP/IP eth1 eth2 eth1 eth2 eth1 eth2 Query Sever Information Store Information Collector Web Browser Name resolver Client for victim TCP/IP TCP/IP eth0 eth0 17 Rescue Person copyright by KDDI R&D Labs Victim

18 Example Service 2: Replication and Reduction of FUs Replicating or Reducing FUs (peers) during their execution depending the load of nodes (Sample service) BitTorrent-like network is created and its structure changes depending on the load of download. FU (Tracker) Slice Service Controller FU (Peer) FU (Peer) FU (Peer) Replicating FUs at high load Consolidating FUs at low load 18 copyright by KDDI R&D Labs. and NEC

19 Motivation: Dynamism in Allocating s Virtual network service infrastructure need allow a service to be provisioned so that network resources are utilized optimally Function Units (FUs) are replicated when the load is increasing. FUs are reduced when the load is decreasing. FU is relocated to a suitable node sliver after a user moves to another location However, such dynamisms introduce complexities into the infrastructure. Thus, these are performed by FUs themselves, so far. FU replication needs initial settings of added FU to fit the on-going service provisioning. FU reduction needs preparation to migrate processed user accesses to remaining FUs. FU relocation needs combination of FU initial settings and migration of user accesses. 19

20 How FU is replicated in on-going service Service Operator Virtualized Network Infrastructure Service Controller Node Sliver (sshd) Node Sliver Controller Replication request (block id) Replication req. Selecting Service Definition Node Sliver (sshd) Node Sliver Controller Node Sliver Controller Install and Invoke 4Dynamic replication Same procedure as service deployment denifinition (Begin to run) Install Initial settings for replica FU Service Invocation Replication response (block id) Replication res. Invocation 20

21 Conclusion Proposal of network platform for creating services over virtualized networks A new service is easily and lightly programmed in a slice A service is deployed in a slice covering different types of virtual networks Openness of programming and execution environment Open API Rich sample functional units (blocks) The prototype is implemented The experiments over the JGN-X Testbed are planned 21

22 Acknowledgements Network Platform Project for Virtualized Networks funded by NICT From 2011 to Collaborators KDDI R&D Laboratories, Inc. The University of Tokyo NEC HITACHI 22 copyright by KDDI R&D Labs., The University of Tokyo, NEC and HITACHI