Acknowledgements This research was funded by IWT.
1
Acknowledgements This research was funded by IWT. Further information Sam Michiels K.U.Leuven – Dept. Computerwetenschappen DistriNet Research Group Celestijnenlaan 200A 3001 Leuven (Heverlee), Belgium [email protected] Supervisors: Pierre Verbaeten Wouter Joosen Tel.: +32 16 32 70 68 Fax: +32 16 32 79 96 www.cs.kuleuven.ac.be Problem context Research relevance DiPS+ Strategy Gold users Silver users Bronze users I II III I II III I II III In = 30 r/s In = 30 r/s In = 30 r/s In = 30 r/s In = 60 r/s In = 30 r/s In = 60 r/s In = 30 r/s In = 30 r/s Non DiPS+ RADIUS randomly drops packets DiPS+ server protects itself against overload (self-healing) In = 30 r/s Out = 30 r/s In = 30 r/s Out = 20 r/s In = 300 r/s Out = 200 r/s In = 200 r/s Out = 200 r/s Authentication requests Authentication requests Accounting requests Accounting requests UDP/IP protocol stack RADIUS accounting RADIUS authentication GSB scheduler strategy •Protocol stack problems & characteristics •Poor separation of concerns •Poor customizability •Poor reusability •Unpredictable load conditions •Protocol stack development productivity must increase •Growing demand for application- specific customizations •Customizable protocol stacks require powerful software design concepts Distrinet Protocol Stack component framework Protocol stacks in control Sam Michiels Dept. of Computer Science Research results Functional/concurrency/ dispatching components Separate data & management plane Software architecture (pipe & filter, blackboard, layered) Self-healing system behavior (e.g. load management) Heade r parse r Concurren cy component DC Attribu te parser NAS checke r Authenticator Accept reply preparator Reject reply preparator Attribute constructo r Header constructo r Heade r parse r Attribu te parser NAS checke r Header constructo r Attribute constructo r Acct reply preparator Accounter AcctReqAut h checker Concurren cy component
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Protocol stacks in control Sam Michiels Dept. of Computer Science. G. B. S. scheduler strategy. Problem context. Research relevance. Protocol stack problems & characteristics Poor separation of concerns Poor customizability Poor reusability Unpredictable load conditions. - PowerPoint PPT Presentation
Transcript of Acknowledgements This research was funded by IWT.
AcknowledgementsThis research was funded by IWT.
Further informationSam MichielsK.U.Leuven – Dept. ComputerwetenschappenDistriNet Research GroupCelestijnenlaan 200A3001 Leuven (Heverlee), [email protected]
Supervisors: Pierre Verbaeten Wouter JoosenTel.: +32 16 32 70 68Fax: +32 16 32 79 96www.cs.kuleuven.ac.be
Problem context Research relevance
DiPS+ Strategy
Gold users Silver
usersBronze users
I II III
I II III
I II III
In = 30 r/s
In = 30 r/s
In = 30 r/s
In = 30 r/s
In = 60 r/s
In = 30 r/s
In = 60 r/s
In = 30 r/sIn = 30 r/s
Non DiPS+ RADIUS randomly drops packets
DiPS+ server protects itself against overload
(self-healing)
In = 30 r/sOut = 30 r/s
In = 30 r/sOut = 20 r/s
In = 300 r/sOut = 200 r/s
In = 200 r/sOut = 200 r/s
Authentication requests
Authentication requests
Accounting requests
Accounting requests
UDP/IP protocol stackUDP/IP protocol stack
RADIUS accountingRADIUS authentication
G S B
schedulerstrategy
•Protocol stack problems & characteristics
•Poor separation of concerns
•Poor customizability
•Poor reusability
•Unpredictable load conditions
•Protocol stack development productivity must increase
•Growing demand for application-specific customizations
•Customizable protocol stacks require powerful software design concepts
Distrinet Protocol Stack component framework
Protocol stacksin control
Sam MichielsDept. of Computer Science
Research results
Functional/concurrency/dispatching components
Separate data & management plane
Software architecture(pipe & filter, blackboard, layered)
Self-healing system behavior(e.g. load management)
Headerparser
Concurrencycomponent
DC
Attributeparser
NASchecker
AuthenticatorAccept replypreparatorReject replypreparator
Attributeconstructor
Headerconstructor
Headerparser
Attributeparser
NASchecker
Headerconstructor
Attributeconstructor
Acct replypreparator
AccounterAcctReqAut
hchecker
Concurrencycomponent
