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Efficient and Safe Migration of Netw...

Liu, Sheng.

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Efficient and Safe Migration of Network Functions using Software-Defined Networking.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Efficient and Safe Migration of Network Functions using Software-Defined Networking./
作者:	Liu, Sheng.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	103 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
標題:	Computer science. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28419465
ISBN:	9798516057748

Efficient and Safe Migration of Network Functions using Software-Defined Networking.
Liu, Sheng.

Efficient and Safe Migration of Network Functions using Software-Defined Networking. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 103 p.

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2021.

This item must not be sold to any third party vendors.

Network function (NF) migration alongside (and possibly because of) routing policy updates is a delicate task, making it difficult to ensure that all traffic is processed by its required network functions, in order. Achieving traffic redistribution while ensuring correct processing of all packets requires an efficient network forwarding-state update and careful coordination between routing-policy change and NF migration. To achieve consistent network updates, in this dissertation, we propose a new method that is inspired by causal consistency, a consistency model for shared-memory systems. We propose and analyze a property called suffix causal consistency (SCC) as an interpretation of causal consistency for rule updates in an SDN network. We design an algorithm implementing this property and formally verify the correctness of this algorithm using model checking. Our evaluation results show that SCC provides greater efficiency than competing consistent-update alternatives while offering consistency that is strong enough to ensure high-level routing properties (e.g., black-hole freedom).To coordinate routing-policy updates with NF migration, we propose a design called Nimble for interleaving these tasks to achieve more efficient completion of both while ensuring complete processing of traffic by the required sequences of NFs. Our technique works with any route-update protocol that implements a property we call relaxed waypoint correctness, which includes our SCC algorithm and many consistent-update protocols. We also provide a route-update protocol that is customized to achieve relaxed waypoint correctness without conforming to conventional "consistent update'' semantics, as typically defined for such protocols. We confirm the sufficiency of relaxed waypoint correctness using model checking, and the implementation demonstrates the efficiency and efficacy of Nimble.

ISBN: 9798516057748Subjects--Topical Terms:

523869
Computer science.
Subjects--Index Terms:

Consistent update

Efficient and Safe Migration of Network Functions using Software-Defined Networking.
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300 $a 103 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
500 $a Advisor: Reiter, Michael K.
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506 $a This item must not be sold to any third party vendors.
520 $a Network function (NF) migration alongside (and possibly because of) routing policy updates is a delicate task, making it difficult to ensure that all traffic is processed by its required network functions, in order. Achieving traffic redistribution while ensuring correct processing of all packets requires an efficient network forwarding-state update and careful coordination between routing-policy change and NF migration. To achieve consistent network updates, in this dissertation, we propose a new method that is inspired by causal consistency, a consistency model for shared-memory systems. We propose and analyze a property called suffix causal consistency (SCC) as an interpretation of causal consistency for rule updates in an SDN network. We design an algorithm implementing this property and formally verify the correctness of this algorithm using model checking. Our evaluation results show that SCC provides greater efficiency than competing consistent-update alternatives while offering consistency that is strong enough to ensure high-level routing properties (e.g., black-hole freedom).To coordinate routing-policy updates with NF migration, we propose a design called Nimble for interleaving these tasks to achieve more efficient completion of both while ensuring complete processing of traffic by the required sequences of NFs. Our technique works with any route-update protocol that implements a property we call relaxed waypoint correctness, which includes our SCC algorithm and many consistent-update protocols. We also provide a route-update protocol that is customized to achieve relaxed waypoint correctness without conforming to conventional "consistent update'' semantics, as typically defined for such protocols. We confirm the sufficiency of relaxed waypoint correctness using model checking, and the implementation demonstrates the efficiency and efficacy of Nimble.
590 $a School code: 0153.
650 4 $a Computer science. $3 523869
650 4 $a Computer engineering. $3 621879
653 $a Consistent update
653 $a Model checking
653 $a Network Function
653 $a Software-defined networking
653 $a Safe migration
653 $a Suffix Causal Consistency
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792 $a 2021
793 $a English
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