Internet transit

Internet transit

Internet transit consists of two bundled services: the advertisement by an Internet service provider (ISP) of routes to a customer's Internet Protocol addresses to the other ISPs who constitute the rest of the Internet, thereby soliciting inbound traffic from them on behalf of the customer; and the advertisement of a default route, or a full set of routes to all of the destinations on the Internet, to the ISP's customer, thereby soliciting outbound traffic from them.

In the 1970s and early 1980s-era Internet, the assumption was made that all networks would provide transit for one another, since all were ultimately publicly funded by the United States government's National Science Foundation. In the modern private-sector Internet, two forms of interconnection exist between Internet networks: transit, and peering. Transit is distinct from peering, in which only traffic between the two ISPs' downstream customers is exchanged over the peering connection, and neither ISP can see upstream through the other's transit providers to the rest of the Internet.

The transit service is typically priced per megabit per second per month, and customers are often required to commit to a minimum volume of bandwidth, and usually to a minimum term of service as well. Some transit agreements provide "service level agreements" which purport to offer money-back guarantees of performance between the customer's Internet connection and specific points on the Internet, typically major Internet exchange points within a continental geography such as North America. These service level agreements still provide only best-effort delivery since they do not guarantee service the other half of the way, from the Internet Exchange Point to the final destination.

See also

* Peering

External links

* [http://www.interstream.com/resources/index.html#Transit InterStream List of IP Transit Providers]


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Transit — may refer to:Media* Transit (film), a 2006 film about Russian and American pilots in World War II * Transit (Sponge Cola album), an album by Sponge Cola * Transit (Staying Alive film), a film produced by MTV and Staying Alive about 4 people in… …   Wikipedia

  • Internet control message protocol — Pile de protocoles 7 • Application 6 • Présentation 5 • Session 4 • …   Wikipédia en Français

  • Transit Center at Manas — (Manas Air Base) Manas International Airport, Kyrgyzstan …   Wikipedia

  • Internet eXchange Point — Un Internet Exchange Point (ou IX ou IXP ou point d’échange Internet), également appelé Global Internet eXchange (ou GIX), est une infrastructure physique permettant aux différents fournisseurs d’accès Internet (ou FAI ou ISP) d échanger du… …   Wikipédia en Français

  • Transit (film québécois) — Transit (film, 2008) Transit est un film québécois réalisé par Christian de la Cortina en 2008. Distribution Cette section est vide, pas assez détaillée ou incomplète. Votre aide est la bienvenue ! Lien externe (fr+en) Transit sur l’Internet …   Wikipédia en Français

  • Internet Neutral Exchange — (INEX) is an Internet exchange located in the Republic of Ireland, with points of presence in Dublin at Citywest and Kilcarbery Park.The system provides a modern layer 2 ethernet switching network supporting IPv4, IPv6 and facilitating multicast… …   Wikipedia

  • Internet service provider — Fournisseur d accès à Internet Pour les articles homonymes, voir FAI. Un fournisseur d accès à Internet (FAI), est un organisme (généralement une entreprise) offrant une connexion au réseau informatique Internet. Le terme en anglais désignant un… …   Wikipédia en Français

  • Internet —  Ne doit pas être confondu avec World Wide Web. Internautes par millier d habitants dans le monde en 2009 …   Wikipédia en Français

  • Internet Control Message Protocol — Pile de protocoles 7.  Application 6.  Présentation 5.  Session 4.  Tr …   Wikipédia en Français

  • Internet service provider — ISP redirects here. For other uses, see ISP (disambiguation). An Internet service provider (ISP) is a company that provides access to the Internet. Access ISPs directly connect customers to the Internet using copper wires, wireless or fiber optic …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”