the android project

14.3.02 ANDROID for IPv6 Concertation 1

The ANDROID Project

Peter T. KirsteinUniversity College London


Partners in ANDROID

MEDIASEC

UPM

6WINIT EURO6IX 6NET


The Nature of ANDROID

• An Active Network Technical Development• In NGI area• Planning to migrate all services to IPv6 • 28 Months from 1.6.99• Project Cost 4.2 M Euro (EC 7.1M Euro)• 643 man months• 7 partners


Project Overview• ANDROID will prove the feasibility of

– a managed, scalable, programmable infrastructure based on application layer active networking

• Technical approach– Application Layer Active Networking

• existing system (FunnelWeb) is starting point– Dynamic VPNs

• Cisco, 6WIND, Netcelo– Management, Flexibility, Modelling to assess

scalability


Main Activities

• Active Services Infrastructure• Active Server Implementation• Active Router Service implementation• Application Components• Modelling• Integration and Testing• All activities first in IPv4, then ported to IPv6


Active Infrastructure• Application Level Active Nets (ALAN)

– FunnelWeb is an implementation• Network contains Execution Environment

for Proxylets (EEPS) - in end-systems– Which may be active servers or routers

• EEPS use Application level framing• Proxylets are loaded from web server

– May itself be an HTTP cache– Are driven by policies written in XML


Schematic of System


System Schematic of A/Ss

AA

DEPOSITORY

SERVER

NODE MONITORING/MANAGEMENT

A/SCLIENT POLICY

DEPOSITORY

ER

EDGE NET

CORENET


Active Server Overview

AA

DEPOSITORY

SERVER

Node Management/Monitoring

Control I/F

Control I/F Control I/F

AAAA

AA

CLIENTEEAA

PMPMPM POLICY

DEPOSITORY


Funnelweb Overview• Adhoc project name• Produced Java-based Execution Environment

for Active Applications (EEAA)• Active Applications are “in between” Applet

and Servlet• EEs loads other Active Applications with

interface:– Load, start, modify, stop


Active Applications

• Active Applications are loaded from Web servers which we showed as AA Depository– These can be via cache servers– They can ensure that AA code can be shared– They can ensure trustworthiness of code

• Active Applications may be self-contained, or a control for other Active Applications– These may include dynamic protocol stacks

• Developing Mechanisms for storing and dis-tributing policies, shown as Policy Depository


Active Applications

• ‘Routing’ AA split in separate AAsApplications:– A Scaleable node discovery AA– Develop various routing AA

• Self organising Transcoding Active Gateway– Called ‘TAG’

• Application level and reliable multicast• Watermarking of streams (e.g. use in VPNs)• Media Record/replay including CDNs


End User Applications• Use as applications to stress system Mbone

multimedia conferencing– Applications multicast in local environment

• Environment to run conferences VPN– VPNs are set up dynamically– VPNs Unicast tunnels between local environments

• Hence requires Transcoding Active Gateway– Does Unicast-Multicast Relay– Some media adaptation


TAG Functions

• Automatic configuration of a multicast session using the secure conference store

• Use of active networking for locating and positioning a reflection point

• Re-multicasting reflecting streams to a client• Modular approach to media relay proxylets• Operation based on XML policies, generate

XML events


TAG Architecture

EEP

TAG client

WEB ServerEEP

TAG server

Discovery

DiscoveryEEP

Discovery

MBone

RMI

TAG proxylets

Reflector

Reflector

session

Media tool

session

session


6WIND Active Router

Mobile IPv6 components

Home agent

Correspondent Node

Mobile Node

Router

IPSec VPN

• Can set up Unicast VPNs based on Active Code• Runs IPv4 and IPv6 Stacks• Can support also Mobile IPv6


TAG - VPN mode

events

unicast stream(s)

VPN Manager

tunnel configEEPTAG client

Reflector

Mbone Tool

multicast stream(s)

SPAR

config

local site

Router

Router

Reflection Manager

Reflector

remote site

registration

MID


Other ANDROID Parts• Policies for TAG and VPNs written in JML• Policies and Active Server code stored in

replicated directories• The set of replicated directories becomes a

Content Distribution Network (CDN)• Need Neighbour Discovery to find Directory• Whole thing written in JAVA• Work on Mobility, security management,

resource management, network management


Major DemonstrationUCL-CSUCL-EE

Netcello

NTUA

BT

6WIND

Internet

-VPN Configure-VPN Manager

-Host + VIC

-VPN Query/Reply-VPN Join

-AS + TAG

-Unicast data-Multicast data

6-BoneLEARnet

-6Wind

-Router


IPv6 Migration• Non-Java Applications like Mbone tools have

APIs re-written to meet IPv6 stacks• All applications have addresses well

separated from rest of system• Use of JAVA 1.4 JDK now allows Java

portion to be fairly easily ported to IPv6• Use IPv6 PKI-enabled from U of Murcia• 6WIND routers, hosts, servers all dual stack• NETCELO management system still IPv4

– Can control IPv6 streams over IPv4 control path


Conclusions• ANDROID is developing major applications

– Which are useful broadly in real environments like wireless

• While initially developed in IPv4, all is being ported to IPv6

• By suitable policies, can be used directly in the 6WINIT environment

• The porting will teach us much for 6LINK– Will use in 6WINIT, 6NET and possibly Euro6IX

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