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Conduct research on Internet Backbone/Internet infrastructure by selecting a Tier-1 network
(such as ATT, Verizon, Comcast, Level 3), an IXP, or a submarine communication cable;
studying its history, current status, map, provided services, and/or wellknown customers. More
Information is better!
Solution
Internet backbone may be defined by the principal data routes between large, strategically
interconnected computer networks and core routers on the Internet. These data routes are hosted
by commercial, government, academic and other high-capacity network centers, the Internet
exchange points and network access points, that exchange Internet traffic between the countries,
continents and across the oceans. Internet service providers, often Tier 1 networks, participate in
Internet backbone traffic by privately negotiated interconnection agreements, primarily governed
by the principle of settlement-free peering.
The first packet-switched computer network was the NPL network, followed closely by the
ARPANET. The latter used a backbone of routers called Interface Message Processors. Both the
NPL and ARPANET networks were interconnected in 1973, while other packet-switched
computer networks began to proliferate in the 1970s, eventually adopting TCP/IP protocols or
being replaced by newer networks. The National Science Foundation created NSFNET in 1986
by funding six networking sites using 56kbit/s interconnecting links and peering to the
ARPANET. In 1987, this new network was upgraded to 1.5Mbit/s T1 links for thirteen sites.
These sites included regional networks that in turn connected over 170 other networks. IBM,
MCI and Merit upgraded the backbone to 45Mbit/s bandwidth (T3) in 1991. The combination of
the ARPANET and NSFNET became known as the Internet. Within a few years, the dominance
of the NSFNet backbone led to the decommissioning of the redundant ARPANET infrastructure
in 1990.
The largest providers, known as tier 1 providers, have such comprehensive networks that they
never purchase transit agreements from other providers. As of 2014 there are six tier 1 providers
in the telecommunications industry. Current Tier 1 carriers include Level 3 Communications,
Telia Carrier, NTT, Cogent, GTT, and Tata Communications

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Conduct research on Internet BackboneInternet infrastructure by sel.pdf

  • 1. Conduct research on Internet Backbone/Internet infrastructure by selecting a Tier-1 network (such as ATT, Verizon, Comcast, Level 3), an IXP, or a submarine communication cable; studying its history, current status, map, provided services, and/or wellknown customers. More Information is better! Solution Internet backbone may be defined by the principal data routes between large, strategically interconnected computer networks and core routers on the Internet. These data routes are hosted by commercial, government, academic and other high-capacity network centers, the Internet exchange points and network access points, that exchange Internet traffic between the countries, continents and across the oceans. Internet service providers, often Tier 1 networks, participate in Internet backbone traffic by privately negotiated interconnection agreements, primarily governed by the principle of settlement-free peering. The first packet-switched computer network was the NPL network, followed closely by the ARPANET. The latter used a backbone of routers called Interface Message Processors. Both the NPL and ARPANET networks were interconnected in 1973, while other packet-switched computer networks began to proliferate in the 1970s, eventually adopting TCP/IP protocols or being replaced by newer networks. The National Science Foundation created NSFNET in 1986 by funding six networking sites using 56kbit/s interconnecting links and peering to the ARPANET. In 1987, this new network was upgraded to 1.5Mbit/s T1 links for thirteen sites. These sites included regional networks that in turn connected over 170 other networks. IBM, MCI and Merit upgraded the backbone to 45Mbit/s bandwidth (T3) in 1991. The combination of the ARPANET and NSFNET became known as the Internet. Within a few years, the dominance of the NSFNet backbone led to the decommissioning of the redundant ARPANET infrastructure in 1990. The largest providers, known as tier 1 providers, have such comprehensive networks that they never purchase transit agreements from other providers. As of 2014 there are six tier 1 providers in the telecommunications industry. Current Tier 1 carriers include Level 3 Communications, Telia Carrier, NTT, Cogent, GTT, and Tata Communications