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Topic: Autonomous system (Internet)

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	Autonomous System number (ASN) resource guide
		Autonomous System numbers (ASNs) are globally unique identifiers for Autonomous Systems.
		An Autonomous System (AS) is a group of IP networks having a single clearly defined routing policy, run by one or more network operators.
		Use this form to transfer historical Internet resources to an APNIC account holder under the Policies for the transfer of historical Internet resources.
	www.apnic.net /services/asn_guide.html (268 words)

	ISP Column - Exploring AS Numbers
		The domain is in effect an autonomous unit in the overall routing architecture, and is termed an “Autonomous System” (AS).
		The use of the term Autonomous System here stresses the fact that, even when multiple IGPs and metrics are used, the administration of an AS appears to other ASs to have a single coherent interior routing plan and presents a consistent picture of what destinations are reachable through it.
		Autonomous Systems are simply numbered sequentially, allowing for a potential of 100% utilization of the number space.
	ispcolumn.isoc.org /2005-08/as1.html (2550 words)

	Autonomous system (Internet) - Wikipedia, the free encyclopedia
		In the Internet, an autonomous system (AS) is a collection of IP networks and routers, under the control of one or more entities, that presents a common routing policy to the Internet.
		The first are public AS numbers, which may be used on the internet and range from 1 to 64511.
		Autonomous Systems can be grouped into 3 categories, depending on their connections and operation.
	en.wikipedia.org /wiki/Autonomous_system_(Internet) (611 words)

	ietf-idr-bgp-confed-00.txt
		However, there is usually no need to expose the internal topology of this divided autonomous system, which means it is possible to regard a collection of autonomous systems under a common administration as a single entity or autonomous system when viewed from outside the confines of the confederation of autonomous systems itself.
		Expiration Date October 1996 [Page 2] INTERNET DRAFT December 5, 1995 Terms and Definitions AS Confederation A collection of autonomous systems advertised as a single AS number to BGP speakers that are not members of the confederation.
		Expiration Date October 1996 [Page 6] INTERNET DRAFT December 5, 1995 At the time of this writing, an implementation of this extension as documented is widely deployed throughout the Internet, therefore the value of any change that is incompatible with this document must be weighed against the benefit gained from a relaxation of this restriction.
	ietfreport.isoc.org /idref/draft-ietf-idr-bgp-confed (1457 words)

	Exploring Autonomous System Numbers - The Internet Protocol Journal - Volume 9, Number 1 - Cisco Systems
		Internet routing architecture is structured as a two-level hierarchy.
		The domain is in effect an autonomous unit in the overall routing architecture, and is termed an Autonomous System (AS).
		As of October 2005, the document defining this proposal is an IETF Internet Draft: draft-ietf-idr-as4bytes-12.txt.
	www.cisco.com /web/about/ac123/ac147/archived_issues/ipj_9-1/autonomous_system_numbers.html (7083 words)

	Encyclopedia: Autonomous system (Internet)
		The Internet Protocol (IP) is a data-oriented protocol used by source and destination hosts for communicating data across a packet-switched internetwork.
		An Internet service provider (ISP, also called Internet access provider) is a business or organization that offers users access to the Internet and related services.
		The border gateway protocol (BGP) is one of the core routing protocols in the Internet.
	www.nationmaster.com /encyclopedia/Autonomous-system-(Internet) (462 words)

	[No title]
		This document is intended as a necessary precursor to the design of a new inter- autonomous system routing protocol and specifies requirements for the Internet applicable for use with the current DoD IP, the ISO IP, and future Internet Protocols.
		An example of such a policy is one where an autonomous system allows the utilization of excess bandwidth by external users as long as this does not interfere with local usage of the link.
		IARP -- Inter-Autonomous System Routing Protocol This is the protocol used between boundary gateways for the purpose of routing between autonomous systems.
	www.isi.edu /in-notes/rfc1126.txt (8022 words)

	Autonomous System (Linktionary term)
		An AS (autonomous system) is a collection of networks, or more precisely, the routers joining those networks, that are under the same administrative authority and that share a common routing strategy.
		Autonomous confederations are assumed to have a higher level of trust protection against routing loops among member systems.
		Refer to "Routing on the Internet" for a historical perspective on the development of autonomous systems and the protocols associated with them.
	www.linktionary.com /a/autonomous.html (497 words)

	Autonomous System AS - Internet Encyclopedia - eLook.org
		Autonomous System AS In the arcane world of exterior routing and default-less routers, Autonomous Systems (AS's) reign as the world's largest routing entities.
		A more enlightening view is of an Autonomous System as a collection of CIDR IP address prefixes under common technical management.
		In fact, most networks with a single Internet connection don't have a unique AS number assigned, and their network addresses are treated as part of the parent AS.
	www.elook.org /internet/4.html (446 words)

	Pantek - Expert Linux and Open Source Services: : RFC #3065: Autonomous System Confederations for BGP. P. Traina, D.
		This document describes an extension to BGP which may be used to create a confederation of autonomous systems that is represented as a single autonomous system to BGP peers external to the confederation, thereby removing the "full mesh" requirement.
		These revisions are summarized in Appendix A. Terms and Definitions AS Confederation A collection of autonomous systems advertised as a single AS number to BGP speakers that are not members of the confederation.
		Discussion It may be useful to subdivide autonomous systems with a very large number of BGP speakers into smaller domains for purposes of controlling routing policy via information contained in the BGP Traina, et al.
	www.pantek.com /library/general/rfc/rfc3065.html (2296 words)

	RFC 1965 - Autonomous System Confederations for BGP
		Introduction It may be useful to subdivide autonomous systems with a very large number of BGP speakers into smaller domains for purposes of controlling routing policy via information contained in the BGP AS_PATH attribute.
		Subdividing a large autonomous system allows a significant reduction in the total number of intra-domain BGP connections, as the Traina Experimental [Page 1] RFC 1965 AS Confederations for BGP June 1996 connectivity requirements simplify to the model used for inter-domain connections.
		Terms and Definitions AS Confederation A collection of autonomous systems advertised as a single AS number to BGP speakers that are not members of the confederation.
	www.packetizer.com /rfc/rfc.cgi?num=1965 (1461 words)

	Glossary /// FixedOrbit (Site not responding. Last check: 2007-11-02)
		An Autonomous System (AS) is a group of IP networks operated by one or more network operator/s which has a single and clearly defined external routing policy.
		A public AS has a globally unique number, an Autonomous System number (ASN), associated with it; this number is used in both the exchange of exterior routing information (between neighboring Autonomous Systems), and as an identifier of the AS itself.
		In the most widely installed level of the Internet Protocol (IP) today, an IP address is a 32-bit number that identifies each sender or receiver of information that is sent in packets across the Internet.
	www.fixedorbit.com /glossary.htm (678 words)

	KLOTH.NET - ASN - Autonomous System Number
		An Autonomous System (AS) is a connected group of IP networks that adhere to a single and clearly defined unique routing policy, i.a.w.
		An ASN (Autonomous System Number) is a globally unique number that is used to identify an Autonomous System (AS) and it enables an AS to exchange exterior routing information with neighboring Autonomous Systems.
		AUTONOMOUS SYSTEM NUMBERS (last updated 12 April 2005) The Autonomous System (AS) numbers are used by various routing protocols.
	www.kloth.net /internet/asn.php (316 words)

	Autonomous system - Wikipedia, the free encyclopedia
		On the Internet, an autonomous system is a collection of IP networks under the control of a single entity; see autonomous system (Internet).
		In mathematics, an autonomous system is a certain kind of system of differential equations; see autonomous system (mathematics).
		This is a disambiguation page—a list of articles associated with the same title.
	en.wikipedia.org /wiki/Autonomous_system (128 words)

	Encyclopedia topic: Autonomous system (Internet) (Site not responding. Last check: 2007-11-02)
		A unique AS number (or ASN) is allocated to each AS for use in BGP (additional info and facts about BGP) routing (additional info and facts about routing).
		AS numbers are assigned by the IANA (additional info and facts about IANA), which also allocate IP address (additional info and facts about IP address) es, to regional internet registries (additional info and facts about regional internet registries) (RIRs) in blocks.
		The first are public numbers, which may be used on the internet (A computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange) and range from 1 to 64511.
	www.absoluteastronomy.com /encyclopedia/a/au/autonomous_system_(internet)1.htm (438 words)

	Multicast Status Web Page
		Each Autonomous System will have a set of address blocks (or prefixes), sets of Internet addresses assigned to it that are routed in common.
		A basic measure of the size of the Multicast Enabled Internet is given by Figure 1a, which shows the number of address blocks (or prefixes) that have multicast routing as seen from the Multicast Technologies Autonomous System.
		Figure 4 shows the relative size of the multicast enabled Internet for both address blocks (or prefixes), and for Autonomous Systems (i.e., the ratio of the number of multicast enabled Autonomous Systems to the total number active), in order to provide two independent estimates for the growth of the multicast enabled Internet.
	www.multicasttech.com /status (2065 words)

	autonomous system - a Whatis.com definition - see also: AS (Site not responding. Last check: 2007-11-02)
		On the Internet, an autonomous system (AS) is the unit of router policy, either a single network or a group of networks that is controlled by a common network administrator (or group of administrators) on behalf of a single administrative entity (such as a university, a business enterprise, or a business division).
		An autonomous system is also sometimes referred to as a routing domain.
		RFC 1786 refers to autonomous systems in describing the Representation of IP Routing Policies in a Routing Registry.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci213662,00.html (307 words)

	Internet Resources Administration
		IANA delegates large ranges of Internet resources to the RIRs, which then allocate the resources within their regions.
		See also the Global Structure of the Internet Registry System, and the History of the RIRs (requires Flash player) to learn more about the hierarchy and dependencies between various organisations.
		Internet Number Resources (IP addresses and AS Numbers) are distributed in a hierarchical way.
	www.ripe.net /info/resource-admin (173 words)

	[No title]
		The Capability that is used by a BGP speaker to convey to its BGP peer the 4-octets Autonomous System number capability carries the 4-octets Autonomous System number of the speaker in the Capability Value field of the Optional Parameter.
		In all other cases the speaker MUST encode Autonomous System numbers as 2-octets entities in both the AS_PATH and the AGGREGATOR attribute in the updates it sends to the peer, and MUST assume that these attributes in the updates received from the peer encoded Autonomous System numbers as 2-octets entities.
		In this case the speaker may need to convert between the 2 and the 4 octets Autonomous System numbers, as a route received from one peer may carry Autonomous System numbers encoded as 4 octets, while re-advertising this route to other peer may require the speaker to encode Autonomous System numbers as 2 octets.
	www3.ietf.org /proceedings/01aug/I-D/draft-chen-as4bytes-00.txt (818 words)

	RFC 1930 (rfc1930) - Guidelines for creation, selection, and registration
		In the current classless Internet (see [CIDR]), a block of class A, B, or C networks may be referred to by merely a prefix and a mask, so long as such a block of networks begins and ends on a power-of-two boundary.
		The use of the term Autonomous System here stresses the fact that, even when multiple IGPs and metrics are used, the administration of an AS appears to other ASes to have a single coherent interior routing plan and presents a consistent picture of what networks are reachable through it.
		An AS has a globally unique number (sometimes referred to as an ASN, or Autonomous System Number) associated with it; this number is used in both the exchange of exterior routing information (between neighboring ASes), and as an identifier of the AS itself.
	www.faqs.org /rfcs/rfc1930.html (2675 words)

	On Inferring Autonomous System Relationships in the Internet - Gao (ResearchIndex) (Site not responding. Last check: 2007-11-02)
		Interdomain routing in the Internet is coordinated by the Border Gateway Protocol (BGP).
		BGP allows each autonomous system (AS) to choose its own administrative policy in selecting routes and propagating reachability information to others.
		Lixin Gao, "On inferring autonomous system relationships in the Internet," in Proc.
	citeseer.ist.psu.edu /453493.html (587 words)

	[No title]
		Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol.
		Member-AS An autonomous system that is contained in a given AS confederation.
		[4] Traina, P. "Autonomous System Confederations for BGP", RFC 1965, June 1996.
	www.ietf.org /rfc/rfc3065.txt (2239 words)

	Autonomous System Partitioning and Policy Routing in the Japanese Internet (ResearchIndex) (Site not responding. Last check: 2007-11-02)
		Abstract: As the number of connected networks increase and multiple service providers exist in a single autonomous system, the networks face routing problems including dependency on service providers, the chance of the appearance of unreachable networks, and overhead in terms of bandwidth used by routing protocols.
		This paper describes a case study on implementing autonomous system partitioning to solve the routing problems with the Japanese Internet.
		The authors examine a criterion of autonomous system...
	citeseer.ist.psu.edu /178170.html (301 words)

	ISP Column - month year
		To set the stage for this examination of Autonomous Systems Numbers it will be necessary to set the stage with a brief overview of the Internet’s routing architecture.
		The left-most number is the AS number of the adjacent Autonomous System from which the address prefix advertisement was received.
		He was an inaugural Trustee of the Internet Society, and served as Secretary of the Board of Trustees from 1993 until 2001, and as chair of the Board of Trustees in 1999 and 2000.
	www.potaroo.net /ispcol/2005-08/as.html (9819 words)

	Autonomous - Autonomous Robotic Soccer (Site not responding. Last check: 2007-11-02)
		Autonomous agents, more specifically cognitive agents, are offered as the But, they must be embodied in the situated sense of being autonomous agents
		The USC Autonomous Flying Vehicle Project was initiated in 1991.
		Autonomous Source So consider Autonomous Source to be in a holding pattern until that day.
	home-owner.siteslinks.com /sil/home-owner-autonomous.htm (144 words)

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