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The Seattle Internet Exchange (SIX) is an
Internet exchange point Internet exchange points (IXes or IXPs) are common grounds of IP networking, allowing participant Internet service providers (ISPs) to exchange data destined for their respective networks. IXPs are generally located at places with preexisting ...
in
Seattle Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...
, USA. Its switch fabric is centered at the
Westin Building The Westin Building Exchange is a major telecommunications hub facility located downtown Seattle, Washington. The building was constructed in 1981 as the Westin Building, housing the corporate offices of Westin Hotels, which was then based in Se ...
and extended to KOMO Plaza, Sabey Intergate, and other locations. The SIX is one of the most successful examples of neutral and independent
peering In computer networking, peering is a voluntary interconnection of administratively separate Internet networks for the purpose of exchanging traffic between the "down-stream" users of each network. Peering is settlement-free, also known as "bill-a ...
points, created as a free exchange point originally sponsored only by donations. The SIX is the most frequently cited model upon which other neutral Internet exchanges are based, and its financial and governance models are often cited as inspiration for other exchanges. It continues to run without any recurring charges to the participants and current major funding comes from one-time 10, 100, and 400
Gbit/s In telecommunications, data-transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are mul ...
port fees, as well as from voluntary contributions from stakeholders. The SIX is a 501(c)(6) tax-exempt non-profit corporation. As of April 21, 2023, there are 364 networks connected to the SIX advertising at least 194,000 (143,000 IPv4, 51,000 IPv6) unique
Border Gateway Protocol Border Gateway Protocol (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 mak ...
(BGP) routes. There are two route servers running the
Bird Internet routing daemon BIRD (recursive acronym for ''BIRD Internet Routing Daemon'') is an open-source implementation for routing Internet Protocol packets on Unix-like operating systems. It was developed as a school project at the Faculty of Mathematics and Physics, ...
(BIRD).


Technology

The core of the SIX consists of
Arista Networks Arista Networks (formerly Arastra) is an American computer networking company headquartered in Santa Clara, California. The company designs and sells multilayer network switches to deliver software-defined networking (SDN) for large datacenter ...
switches, with a 7808R3, 7512R, and 7508R at the Westin Building, a 7504R3 at KOMO Plaza, and a 7280SR-48C6 at Sabey Intergate. Participants may connect to the SIX core using a 1 Gbit/s, 10 Gbit/s, 40 Gbit/s, 100 Gbit/s, or 400 Gbit/s Ethernet connection (fiber) or to one of several extensions. Extensions are sponsored by colocation facilities or transport providers. Both
IPv4 Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. IPv4 was the first version d ...
and
IPv6 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. I ...
peering is available and encouraged at the SIX, with availability dependent on the peer. Jumbo frame peering at 9000-byte
maximum transmission unit In computer networking, the maximum transmission unit (MTU) is the size of the largest protocol data unit (PDU) that can be communicated in a single network layer transaction. The MTU relates to, but is not identical to the maximum frame size th ...
(MTU) is available.


Extensions

The following is a list of SIX extensions: * Archeo Futurus: Connects participants at H5 Data Centers Seattle. *
Astound Broadband Astound Broadband is an American telecommunications holding company based in Princeton, New Jersey. It was formed on January 24, 2018, with the completion of the $2.36 billion purchase of Kirkland-based Wave Broadband by private-equity firm TPG ...
: Regional network. * BSO/IX Reach: Worldwide WAN. *
Equinix Equinix, Inc. is an American multinational company headquartered in Redwood City, California, that specializes in Internet connection and data centers. The company is a leader in global colocation data center market share, with 240 data center ...
: PAIX SEA, which is a neutral Internet exchange point operated by Equinix in Seattle, Washington. * Minnesota VoIP:
Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the List of U.S. states and territories by population, 22nd most populous, with over 5.75 million residents. Minne ...
area. * NOCIX: North Kansas City area. * Ptera:
Spokane Spokane ( ) is the largest city and county seat of Spokane County, Washington, United States. It is in eastern Washington, along the Spokane River, adjacent to the Selkirk Mountains, and west of the Rocky Mountain foothills, south of the Canada ...
area. * Reliable Internet (Arrow Calgary):
Calgary Calgary ( ) is the largest city in the western Canadian province of Alberta and the largest metro area of the three Prairie Provinces. As of 2021, the city proper had a population of 1,306,784 and a metropolitan population of 1,481,806, maki ...
area. * Wholesail Networks: Regional network. * Wowrack: Wowrack datacenter in
Tukwila, Washington Tukwila ( ) is a suburban city in King County, Washington, United States, located immediately to the south of Seattle. The population was 21,798 at the 2020 census. Tukwila is a community of communities, with residents of many diverse origi ...
.


See also

*
List of Internet exchange points This is a list of Internet exchange points ( IXPs). There are several sources for IXP locations, including Packet Clearing House, who have maintained the earliest list of IXPs, with global coverage since 1994. Also, Telegeography, PeeringDB and ...


References


External links

* {{Official website, https://www.seattleix.net/ Internet exchange points in the United States Network access 1997 establishments in Washington (state)