Publication

On Correctness of Dynamic Protocol Update

Olivier Rütti
2005
Conference Papers

Abstract

Replacing or adding network protocols at runtime is problematic – it must involve synchronization of the protocol switch with ongoing local and network communication. We define a formal mathematical model of dynamic protocol update (DPU) and use it to define two DPU algorithms. The algorithms are based on fully-synchronized and lazy strategies. The two strategies implement updates with respectively, strong and weak safety properties. Our model allowed us to express the properties and the DPU algorithms clearly and abstractly, aiding algorithm design and correctness proofs.

Official source

https://infoscience.epfl.ch/entities/publication/9cb0e299-6f1c-4d77-b85c-36e29b2fbbea

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Olivier Rütti
2005
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9cb0e299-6f1c-4d77-b85c-36e29b2fbbea

About this result

Related concepts (32)

Communication protocol

A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any variation of a physical quantity. The protocol defines the rules, syntax, semantics, and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages.

Multiprotocol Label Switching

Multiprotocol Label Switching (MPLS) is a routing technique in telecommunications networks that directs data from one node to the next based on labels rather than network addresses. Whereas network addresses identify endpoints the labels identify established paths between endpoints. MPLS can encapsulate packets of various network protocols, hence the multiprotocol component of the name. MPLS supports a range of access technologies, including T1/E1, ATM, Frame Relay, and DSL. In an MPLS network, labels are assigned to data packets.

Network switch

A network switch (also called switching hub, bridging hub, and, by the IEEE, MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality.

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