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Topic: Autonomous system number

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	Exploring Autonomous System Numbers-The Internet Protocol Journal - Volume 9, Number 1 - Cisco Systems
		The domain is in effect an autonomous unit in the overall routing architecture, and is termed an Autonomous System (AS).
		The left-most number in the AS path list is the ASN of the adjacent AS from which the address prefix advertisement was received.
		The ASN of the aggregating AS is attached to the aggregate prefix advertisement as an AGGREGATOR attribute.
	www.cisco.com /web/about/ac123/ac147/archived_issues/ipj_9-1/autonomous_system_numbers.html (7081 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.
		A unique AS number (or ASN) is allocated to each AS for use in BGP routing.
		Autonomous Systems can be grouped into 3 categories, depending on their connections and operation.
	en.wikipedia.org /wiki/Autonomous_system_(Internet) (600 words)

	RIPE \| Document Store \| RIPE-389 AS Number Assignment Policies and Procedures
		This document provides a description of Autonomous System Numbers, their assignment procedures and guidelines on how to obtain them in RIPE NCC service region.
		An Autonomous System (AS) is a group of IP networks run by one or more network operators with a single, clearly defined routing policy.
		If an organisation has an AS Number that is no longer in use, it can be returned to the public pool of AS Numbers by sending a message to hostmaster@ripe.net.
	www.ripe.net /ripe/docs/asn-assignment.html (949 words)

	Autonomous System Number (Site not responding. Last check: 2007-10-10)
		An Autonomous System Number (AS) is a set of routers under a single technical administration, using an interior gateway protocol and an exterior gateway protocol to route packets to other ASs.
		Sometimes, the term AS is misunderstood and used for grouping together a set of prefixes which belong under the same administrative umbrella.
		AS number are assigned by RIPE in Europe
	www.ceenet.org /workshops/lecture98/george/nameaddr/sld017.htm (104 words)

	PCH - INOC-DBA: What is an Autonomous System Number (ASN)?
		Autonomous System Numbers (ASNs) are globally unique identifiers for IP networks.
		When a new organization is created in our system we ask you to provide at least one ASN which will uniquely identify it.
		If you are unable to determine your organization's ASN or you do not have one assigned, please contact operator@pch.net for assistance.
	www.pch.net /inoc-dba/docs/what_is_asn.html (149 words)

	RFC 3065 (rfc3065) - Autonomous System Confederations for BGP
		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.
		Subdividing a large autonomous system allows a significant reduction in the total number of intra-domain BGP connections, as the connectivity requirements simplify to the model used for inter-domain connections.
		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.
	www.faqs.org /rfcs/rfc3065.html (1982 words)

	[No title]
		Autonomous system source routes When a system is processing a SRE with an Address Family indicating an AS source route, it MUST use the SRE Offset field to determine the next autonomous system.
		If the next autonomous system is the local autonomous system, the SRE Offset field should be increased by two (the size of an autonomous system number).
		Otherwise, the system should use the autonomous system number indicated by the SRE Offset field to replace the destination address in the delivery header and forward the packet.
	matrix.csustan.edu /docs/rfc/1501-2000/rfc1702.txt (827 words)

	European Autonomous System Number Application Form and Supporting Notes (Site not responding. Last check: 2007-10-10)
		For an explanation on when an AS Number is needed and policies and procedures to be followed when requesting an AS Number please see "Guidelines for creation, selection and registration of an Autonomous System" (RFC 1930), as well as section 7 of "European Internet Registry Policies and Procedures" (ripe-140).
		To express the Autonomous System Number that one is applying for, it is possible to use NEW as explained above.
		It is required for each "aut-num:" (autonomous number) object to reference a " mntner :" (maintainer) object.
	rtfm.edunet.ru /rtfm/ripe/ripe-147.html (1061 words)

	autonomous system - a Whatis.com definition - see also: AS
		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 (299 words)

	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.
		This includes IP address ranges and AS numbers that were transferred to the APNIC Whois Database as part of the ERX and AUNIC transfer projects.
	www.apnic.net /services/asn_guide.html (268 words)

	[No title]
		It is strongly advised that you follow the development of inter-autonomous systems protocols in the IAB task forces.
		To obtain an Autonomous System Number the following information must be provided: 1) The name of the sponsoring organization, and the name, title, mailing address, phone number, net mailbox, and NIC Handle (if any) of the contact person at that organization.
		This is the contact point for problems with the autonomous system and for updating information about the autonomous system.
	www.eff.org /Net_culture/Net_info/Technical/Registration/asn.template (773 words)

	Autonomous System Number Report
		Any individual AS number can be in any one of four states: part of the IANA unallocated number pool, part of the unassigned pool held by an RIR, assigned to an end user entity but not advertised in the routing system, and assigned and advertised in BGP.
		The technique used here is to use recent AS number consumption data in a time series, apply a best fit to the data using a least squares best fit, and then using the derived slope and intercept to generate a predictive trend line.
		Using this exponential trend model of advertised AS number growth and a linear trend model of the ratio of unadvertised to advertised AS numbers, it is now possible to model each RIR's projected AS allocation rate and then look at the predicted behaviour of the RIR pool size for each RIR.
	www.potaroo.net /tools/asns (1774 words)

	Autonomous System Number ASN Extension for The Webalizer
		Init Seven AG has developed an extension of The Webalizer called 'webalizer-asn', that supports AS number (Autonomous System Number) lookups to generate additional statistics based on the origin of the hosts that have visited a website.
		The AS number identifies the AS (Autonomous System) a host is belonging to.
		An Autonomous System is a group of IP networks operated by one or more network operator/s which has a single and clearly defined external routing policy.
	www.init7.net /webalizer_asn (446 words)

	ASN - Abstract Syntax Notation, Autonomous System Number
		Numbers are in the range 0-65535, with 65024-65535 reserved for Private ASNs.
		ASNs may be paper based, however electronic notification is preferred.
		Advanced shipment notification systems are usually combined with bar coded compliance labeling that allows the customer to receive the shipment into inventory through the use of bar code scanners and automated data collection systems.
	www.auditmypc.com /acronym/ASN.asp (286 words)

	ipedia.com: Autonomous system (Internet) Article (Site not responding. Last check: 2007-10-10)
		In the Internet, an autonomous system is a collection of IP networks under control of a single entity, typically an Internet service provider or a very large organisation with redundant connections to...
		In the Internet, an autonomous system (AS) is a collection of IP networks under control of a single entity, typically an Internet service provider or a very large organisation with redundant connections to the rest of the Internet.
		The numbers are assigned by the same authorities that allocate IP addresses.
	www.ipedia.com /autonomous_system__internet_.html (171 words)

	[No title]
		For an explanation on when an AS Number is needed and policies and procedures to be followed when request- ing an AS Number please see "Guidelines for cre- ation, selection and registration of an Autonomous System" (RFC 1930), as well as section 7 of "Euro- pean Internet Registry Policies and Procedures" (ripe-140).
		is a positive number used to express a relative cost of default routes used.
		____________________________________________________ ripe-147.txt Page 4 European Autonomous System Number Application Form and Support- ing Notes ____________________________________________________ admin-c: The NIC handle of the person who is the administrative contact for the Autonomous System; The administrative contact must be physically located at the site that will be using the AS Number.
	www.ripn.net:8082 /nic/ripe-docs/ripe-147.txt (1089 words)

	Sprintlink FAQ's - BGP
		A prefix is composed of a path of AS numbers, indicating which networks the packet must pass through, and the IP block that is being routed, so a BGP prefix would look something like: 701 1239 42 206.24.
		To set up BGP, you need a router capable of running BGP (a Cisco router with 10.3 or later IOS will do), an Autonomous System Number from ARIN, and you must also be multi-homed.
		An autonomous system is one network or series of networks that are all under one administrative control.
	www.sprintlink.net /faq/bgp.html (674 words)

	Connected: An Internet Encyclopedia - Autonomous System AS (Site not responding. Last check: 2007-10-10)
		Autonomous System AS 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.
		In technical terms, an AS number is a 16-bit integer assigned by InterNIC and used by BGP to implement policy routing and avoid top-level routing loops.
		A more enlightening view is of an Autonomous System as a collection of CIDR IP address prefixes under common technical management.
	ie.activedomain.org /4.htm (475 words)

	AARNet: Network: Autonomous System Numbers (Site not responding. Last check: 2007-10-10)
		Other autonomous system numbers can be found by checking the route registries' servers.
		Single-homed networks cannot be assigned a public autonomous system number.
		Each directory is named with the convention of AS number first (digits) followed by a short description of the network involved, based upon the applicant's domain name (using lower case letters, digits and hyphens only).
	www.aarnet.edu.au /network/autonomoussystem (166 words)

	LACNIC - Internet Resource Management Policies in Latin America and the Caribbean - Autonomous System Number Allocation ...
		An Autonomous System (AS) is a group of IP address networks managed by one or more network operators having a unique, clear routing policy.
		Sharing the same ASN among a group of networks that are not under the same management will require additional coordination among network administrators and, in some cases, will require redesigning the network to a certain degree.
		It is the obligation of the organization receiving an Autonomous System Number from LACNIC to maintain updated records of postal addresses and points of contact.
	lacnic.net /en/politicas/2002-11-num_sis.html (518 words)

	AS Number Registration Services
		RFC 1930 Guidelines for creation, selection, and registration of an Autonomous System (AS).
		Autonomous System Numbers (ASNs) are globally unique numbers that are used to identify autonomous systems and which enable an AS to exchange exterior routing information between neighboring ASes.
		The policies governing AS number allocation and maintenance can be found in the Number Resource Policy Manual.
	www.arin.net /registration/asn (94 words)

	[No title]
		An allowed list of Source Autonomous System information will be used to convert from the IGP to EGP, on a Destination Autonomous System number basis, to allow for specific exclusion of definable remote Autonomous System information.
		A single Autonomous System number may not be used with two E-PSPs at the same time as long as the two E-PSP's belong to the same NSS.
		ASout If specified, this AS number is used on all EGP packets sent to thiqs neighbor nogendefault If specified, this neighbor is not considered when generating a gateway default.
	www.rpi.edu /AFS/campus/doc/sri-rfc/rfc1093.txt (2306 words)

	[No title]
		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.
		Standards Track [Page 4] RFC 3065 Autonomous System Confederations for BGP February 2001 a) When a given BGP speaker advertises the route to another BGP speaker located in its own autonomous system, the advertising speaker shall not modify the AS_PATH attribute associated with the route.
		Standards Track [Page 9] RFC 3065 Autonomous System Confederations for BGP February 2001 Appendix A: Comparison with RFC 1965 The most notable change from [1] is that of reversing the values AS_CONFED_SEQUENCE(4) and AS_CONFED_SET(3) to those defined in section "AS_CONFED Segment Type Extension".
	matrix.csustan.edu /docs/rfc/3001-3500/rfc3065.txt (2239 words)

	Autonomous System whois lookup (Site not responding. Last check: 2007-10-10)
		Currently this set of webpages is able to understand the output of over 110 NIC (Network Information Centre) whois servers located around the world.
		If you recieve email from Nigerian sources proposing either a "legitimate" business deal or one where they have a large sum of money and need assistance getting it out it is extremely likely you have been emailled by fraudsters.
		Read more on the 419 Coalion Website about this crime and how dangerous it can be to you.
	www.enc.com.au /itools/aut-num.php (258 words)

	[No title] (Site not responding. Last check: 2007-10-10)
		If your organisation is requesting an AS number on behalf of a customer, please be aware that your organisation must return the AS number to APNIC if the customer ceases connectivity with you.
		For more information, see section 6.2 of "Policies for Autonomous System number management in the Asia Pacific region" at: http://www.apnic.net/docs/policy/asn-policy.html There is also an online web version of this form at: http://www.apnic.net/db/aut-num.html Eligibility for an AS number ---------------------------- Organisations requesting an AS number should see RFC 1930 to determine whether an AS number is justified.
		If you are an APNIC non-member or requesting an AS number for your own network, you may leave this section blank.
	ftp.apnic.net /apnic/docs/asn-request (485 words)

	Guidelines for Requesting an
		This is an overview of the step-by-step processes by which an organization can request the assignment of an Autonomous System Number (ASN), and how to manage the record of that assignment.
		An ASN 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 AS numbers.
		The AS Number Modification (ASN-Mod) template can be used to change the POC handle associated with an AS number or to modify an AS name.
	www.arin.net /registration/guidelines/asn.html (1400 words)

	[No title]
		Any IPv6 system using these addresses will have to renumber at some time in the future.
		Autonomous System Number This is the current autonomous system number assigned to the provider providing internet service to the an IPv6 testers organization.
		For example for IPv6 testers receiving internet service from BBN Barrnet would use autonomous system number 189.
	www.isi.edu /in-notes/rfc1897.txt (627 words)

	AS Report (Site not responding. Last check: 2007-10-10)
		This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.
		This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
		Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
	www.cidr-report.org /cgi-bin/as-report?as=as8672 (175 words)

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