Border Gateway Protocol | Solutional Webdesign Antwerpen

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The Border Gateway Protocol (BGP) is a fundamental protocol designed to direct Internet^[2] traffic across the globe. First sketched out informally in 1989, it was officially described in the same year in RFC 1105, and has been actively used on the Internet since 1994. BGP works as a path vector protocol and operates based on Protocole de contrôle de transmission^[1] (TCP), using port 179 for communication. It establishes sessions between peers to exchange routing information, selecting the best routes through a decision process. BGP is essential for supporting policy-based routing, traffic engineering, and preventing routing loops. However, it does face challenges such as security^[3] vulnerabilities, scalability issues, route flapping, and a lack of built-in encryption, which can lead to resource consumption in large networks. Despite these, it remains a crucial component of the Internet’s infrastructure.

Définitions des termes

1. ↑ Protocole de contrôle de transmission ( Transmission Control Protocol ) The Transmission Control Protocol (TCP) is a key technology that makes the internet work. It was introduced by Vint Cerf and Bob Kahn in 1974 and detailed in the Request for Comments (RFC) 675. TCP is a set of rules for managing the delivery of data over the internet or other networks. It ensures data travels safely, quickly, and in the right order from one computer to another. TCP is responsible for creating a connection between computers, maintaining it, and ending it when it's no longer needed. It also takes care of re-sending any data that gets lost along the way. TCP is used by many internet applications like email, web browsing, and streaming media. It's also important for managing network performance and security. TCP's segment structure, which includes a header and data section, contains important information for data delivery. Despite its many strengths, TCP also has vulnerabilities that need to be managed, like the potential for denial of service attacks.

2. ↑ Internet. L'internet est un système mondial de réseaux informatiques interconnectés qui utilisent des protocoles de communication normalisés, principalement le TCP/IP, pour relier des appareils dans le monde entier. Issu du terme "internetted" utilisé en 1849, le terme "Internet" a ensuite été utilisé par le ministère américain de la guerre en 1945. Son développement a commencé avec des informaticiens qui ont créé des systèmes de partage de temps dans les années 1960 et a progressé avec la création d'ARPANET en 1969. L'internet est autogéré, sans autorité centrale, et ses principaux espaces de noms sont administrés par l'Internet Corporation for Assigned Names and Numbers (ICANN). Il a considérablement transformé les moyens de communication traditionnels et s'est développé de manière exponentielle au fil des ans, le nombre d'internautes augmentant de 20% à 50% par an. En 2019, plus de la moitié de la population mondiale utilisait l'internet. La suite de protocoles internet, qui comprend le protocole TCP/IP et quatre couches conceptuelles, guide les paquets internet jusqu'à leur destination. Des services essentiels comme le courrier électronique et la téléphonie par internet fonctionnent sur l'internet. Le World Wide Web, une collection mondiale de documents interconnectés, est un élément clé de l'internet.

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Glossaire

Protocole de passerelle frontalière (Wikipedia)

Protocole de passerelle frontalière (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet. BGP is classified as a path-vector routing protocol, and it makes routing decisions based on paths, network policies, or rule-sets configured by a network administrator.

Protocole de passerelle frontalière
Protocole de communication
BGP state machine
Abbreviation	BGP
Purpose	exchange Protocole Internet routing information
Introduction	June 1, 1989; 34 years ago (1989-06-01)
Based on	EGP
OSI layer	Application layer
Port(s)	tcp/179
RFC(s)	§ Standards documents

BGP used for routing within an autonomous system is called Interior Border Gateway Protocol (IBGP). In contrast, the Internet application of the protocol is called Exterior Border Gateway Protocol (EBGP).

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