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Topic: IP address shortage

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IP address allocation

Classes of IP addresses

IP address

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	IP address - Wikipedia, the free encyclopedia
		An IP address can also be thought of as the equivalent of a street address or a phone number (compare: VoIP) for a computer or other network device on the internet.
		An IP address can appear to be shared by multiple client devices either because they are part of a shared hosting web server environment or because a proxy server (e.g.
		IP addresses may either be assigned permanently (for example, to a server which is always found at the same address) or temporarily from a pool of available addresses.
	en.wikipedia.org /wiki/IP_address (876 words)

	Private network - Wikipedia, the free encyclopedia
		Computers may be allocated addresses from this address space when it's necessary for them to communicate with other computing devices on an internal (non-Internet) network but not directly with the Internet.
		Another reason for the extensive use of private IP addresses is the shortage of publicly registerable IP addresses.
		The intention behind these RFCs is to provide an IP address (and by implication, network connectivity) without a DHCP server being available and without having to configure a network address manually.
	en.wikipedia.org /wiki/Private_IP_address (527 words)

	Find IP Address (Site not responding. Last check: 2007-10-25)
		The IP Address above is what all websites record when you visit them, and seeing as your ISP (internet service provider) has been issued with a certain range of IP Address's then it does not take very long to track you down if there was ever a need.
		IP is a network layer protocol in the internet protocol suite and is an upper layer protocol that also provides globally unique addresses (e.g., MAC address for ethernet) but two of these addresses will not necessarily be able to communicate to each other.
		IP adds a service on top of these data link layer protocols — through the use of an IP address — that provides the ability to uniquely identify with and communicate with any other device on the network.
	www.tamarsolutions.co.uk /whatsmyip.aspx (940 words)

	IP Addressing
		The identification of the network and device address within the IP address depends upon the classification of the network.
		Shortage of IP addresses The number of networks and devices has exploded in the recent past.
		One solution to overcome the IP address shortage is to provide temporary addresses to devices as and when the device connects to the Internet.
	www.securityideas.com /ipaddressing.html (462 words)

	RFC 3102 - Realm Specific IP: Framework
		Once an address is allocated to a particular host, only that host may use the address until the address is returned to the pool.
		After verifying that the source public IP address and source port number is valid, RSIP gateway A transmits the packet on the public network.
		In particular, IP addresses may be passed from party to party under the assumption that they are global endpoint identifiers.
	www.packetizer.com /rfc/rfc.cgi?num=3102 (9318 words)

	Private IP address (Site not responding. Last check: 2007-10-25)
		This means the addresses are available for any use by anyone and therefore the same RFC 1918 IP addreses can be reused.
		They are used extensively in private networks due to the shortage of publicly registerable IP addresses and therefore NAT is required to connect those networks to the Internet.
		Private IP addresses also provide a basic form of security as in a typical network configuation of this type it isn't possible for the outside world (Internet) to establish a connection directly to a host using these addresses.
	www.explainthis.info /pr/private-ip-address.html (236 words)

	Why IPv6 will not loosen IP address allocation
		This is leading to a worldwide crunch in the availability of addresses, and rationing is in effect, specially in Asia, which came late to the Internet party and has a short allocation (Stanford University has more IPv4 addresses allocated to it than the whole of China).
		Many people make do today with Network Address Translation (NAT), where a box (like a DSL router) allows several machines to share a single global IP address, but this is not an ideal solution, and one that only postpones the inevitable (but not imminent) reckoning.
		One misconception, however, is that that the slow pace of the migration is somehow related to the fact you get your IP addresses from your ISP, and don't "own" them or have the option to port them the way you now can with your fixed or mobile phone numbers.
	www.majid.info /mylos/weblog/2004/06/17-1.html (1157 words)

	What is Network Address Translation (NAT)?
		To conserve IP address space, networks which are not directly connected to the Internet are often given private address space.
		Private address space are ranges of IP address which cannot be routed over the Internet.
		This is where a host with a private IP address is given a dedicated public IP address in the NAT device.
	www.tech-faq.com /nat-network-address-translation.shtml (491 words)

	SB-Projects: TCP/IP Theory (Site not responding. Last check: 2007-10-25)
		Please note that this is the result of the boolean AND function between the IP address and the network mask.
		IP addresses are divided into 5 classes, of which 3 are generally used.
		Remember though that we are only using IP addresses from the private network ranges, so we personally will not be affected by the IP shortage in the world.
	www.xs4all.nl /~sbp/projects/tcpip/theory/theory2.htm (1134 words)

	[address-policy-wg] IPv4 Address Space
		When IPv4 address space finally "runs out" this will occur at the global level, leaving each region with a relatively small pool of addresses remaining to be allocated.
		This is because addresses are distributed in a co-ordinated fashion from a single global pool, and there is no system whereby that pool is exclusively divided among, or pre-allocated to, different countries or regions.
		Through the current system of address administration, IP addresses are allocated according to immediate need wherever that need is demonstrated and it is simply not possible for isolated "shortages" to exist.
	ripe.net /ripe/maillists/archives/address-policy-wg/2003/msg00218.html (614 words)

	IP address - Webopedia.com (Site not responding. Last check: 2007-10-25)
		The format of an IP address is a 32-bit numeric address written as four numbers separated by periods.
		The four numbers in an IP address are used in different ways to identify a particular network and a host on that network.
		The number of unassigned Internet addresses is running out, so a new classless scheme called CIDR is gradually replacing the system based on classes A, B, and C and is tied to adoption of IPv6.
	www.koolpages.com /michael1/IP_address[1].html (450 words)

	A hitchhiker's guide to domain names
		Despite the fact that an IP address is a 32-bit number, an IP address shortage is occurring.
		It knows whom to ask, since the IP address of a DNS node is globally known to all nodes.
		Having a way to convert a name to an IP address is fundamental, but converting an IP address to a name involves security issues that need to be addressed.
	www.melbpc.org.au /pcupdate/9906/9906article7.htm (2324 words)

	DriverHeaven.net - There's more to Web addresses than IPv6 (Site not responding. Last check: 2007-10-25)
		If the address shortage were a correct characterisation of the problem, I'd lament the insularity of the US, which also opted out of the metric system.
		The real problem is that an address gives systems (desktops, servers, handhelds, phones, etc.) the public presence necessary to be a full participant on the Internet -- it allows one to be reached or "addressed" by others.
		Even though the basic model had changed, the idea that the IP address was a precious limited resource was accepted and tolerated because we could work around the problem as long as we were browsing.
	www.driverheaven.net /printthread.php?t=23330 (268 words)

	Compatible Systems Corporation Network Address Translation Configuration Guide
		It is not the address or addresses to which the processes inside the NAT Network are communicating, as the name might imply.
		The External Range(s) is (are) the IP address(es) the NAT algorithm is using to allow outside processes to communicate with the IP addresses in the NAT Network through the External NAT Port.
		The NAT Network packets, from the "private" IP address range of 10.0.0.0/8, are translated as they travel through the NAT Router and appear on the External Network to originate from the IP source address of 198.41.9.214.
	www.cisco.com /warp/public/707/cscsupport/setup_guides/nat.html (8683 words)

	MindTree Consulting
		Further the addresses are divided as Class A, B, C and D. This has given rise to inefficient usage and wastage of addresses (Class A, B).
		There is a rapid growth of the applications/protocols that need IP addresses globally scoped, unique and routable e.g.
		The shortage of addresses is not so acute in North America as it is in other parts of the world, particularly developing countries like China, parts of Asia, Africa and European countries.
	www.mindtree.com /kc/view_art.php?wid=13 (1342 words)

	ip address
		For hosts that don't need the Internet connection outside of an enterprise, their IP addresses donn't have to be globally unique.
		IP addresses are allocated to ISPs by regional registries to assign to its customer base.
		To conserve IP address space, new IP addresses are not assigned according to class boundarires.
	www.csusm.edu /hylin/cs537s00/ip_address.html (610 words)

	Relieving the IP address shortage
		The IP address allocation agencies have put in place policies to make good use of the comparatively small amount of IP address space that currently remains unallocated.
		This new regime, coupled with the fact that the addresses administered by the Computing Service are becoming exhausted, is forcing the Computing Service to apply a more stringent regime to the use of IP addresses within the University.
		Private (RFC1918) IP addresses within the University of Cambridge and the CUDN, for all those devices that need to be visible only within the institution (printers, hubs and switches are common examples).
	www.cam.ac.uk /cs/netdiv/addressshortage.html (762 words)

	U.S. shrugs off world's address shortage \| Tech News on ZDNet (Site not responding. Last check: 2007-10-25)
		Global momentum is growing for a new address system, known as IPv6, which promises to vastly expand the pool of unique numbers available for connecting PCs and other devices to the Net.
		Since fear of an address shortage is the single biggest argument in favor of a switch, the United States could stay on the sidelines as the rest of the world wrestles with the upgrade over the coming years, networking experts said.
		Some of these new technologies include voice over IP (VoIP), which requires that home phones have IP addresses, and radio ID tags that retailers are experimenting with to monitor their store shelves.
	news.zdnet.com /2100-3513_22-5055803.html (1793 words)

	The net address shortage rumour - silicon.com
		The idea that there is an internet address shortage looming in Asia or any part of the world is "misinformation," according to a senior executive at the body responsible for internet addresses in the Asia-Pacific region.
		Wilson cites several reasons for the birth of the myth of the IP address shortage and the related idea that Asia is a latecomer to the IP address buffet.
		Today, any organisation applying for addresses plays by the same rules, regardless of which country it is from, he said.
	www.silicon.com /research/specialreports/ip/0,39025013,10004838,00.htm (859 words)

	Knowledge Center: Whitepapers and Articles
		The current version of the IP protocol in use is IPv4 (IP Version 4).
		The most important problem with IPv4 today is the Acute IP address Shortage due to increasing number of devices (computers, mobile devices, home appliances etc.) connected to the Internet.
		Further the addresses are divided as Class A, B, C & D. This has given rise to inefficient usage and wastage of addresses (Class A, B).
	www.mindtree.com /kc/ipv6.html (2684 words)

	The 'Security Digest' Archives (TM) : TCP-IP Distribution List for September 1993 (Site not responding. Last check: 2007-10-25)
		The addresses x.y.z.32, x.y.z.64, x.y.z.96, x.y.z.128, x.y.z.160 and x.y.z.192 are not accepted because, according to the subnet mask, appear to have zero network portion (a general subnetted ip address consists of: ..), and continuous zeros mean "this"!
		Similarly the addresses x.y.z.63, x.y.z.95, x.y.z.127, x.y.z.159, x.y.z.191 and x.y.z.223 represent the broadcast addresses for the corresponding subnets, provided that the broadcast format is "all ones".
		I know that in general on an IP network the forward and reverse paths may be very different and thus the arrival times and rates of the IP packets that carry TCP could arrive at quite arbitrary times.
	securitydigest.org /tcp-ip/archive/1993/09 (14921 words)

	IP Address Shortage Spurs Black Market
		People ask for an IP address for their machine, and I give it to them.
		Dealing IP Just as with other fl markets of the twentieth century, students involved with selling and trading IP addresses, or ``dealing IP'' as it is called in the dark basements and dangerous streets of M.I.T., turn to other crimes, such as fraud and prostitution.
		I already have IP addresses reserved for when the lights in my office are IP addressible.
	web.mit.edu /voodoo/www/is771/ip.html (1395 words)

	IPv6 isn’t just about more addresses - TechUpdate - ZDNet (Site not responding. Last check: 2007-10-25)
		The real problem is that an address gives systems (desktops, servers, handhelds, phones, etc.) the public presence necessary to be a full participant on the Internet-it allows one to be reached or “addressed” by others.
		For every device to have the opportunity of becoming a participant, a unique IP address is indeed required (though it can and must be dynamic with the DNS providing stable handles).
		The problem is not just a lack of addresses outside the U.S. The problem is a lack of addresses everywhere, including the U.S. If the lack of addresses weren’t a problem in the U.S., then NAT wouldn’t be nearly as prevalent as it is today.
	techupdate.zdnet.com /techupdate/stories/main/0,14179,2914431,00.html (1544 words)

	ACM News Service
		ICANN has reserved a number of the 256 possible /8s, which are measures of IP address space that comprise roughly 16.7 million individual addresses with the first eight bits in common.
		IP Flow Information Export (IPFIX) is expected to reach final-draft stage early next year and would be included in equipment from Cisco, Nortel, and other vendors.
		Data packets are labeled with seven fields in IPFIX: Source IP address, destination IP address, source port, destination port, type of Layer 3 protocol, type-of-service byte, and input logical interface.
	technews.acm.org /articles/2003-5/1103m.html (3989 words)

	STAM Multimedia Inc.
		The first number set is used to specify the network address, while remaining three number sets specify the device.
		In this case the first 3 number sets specify the network address, while the remaining number set indicates the device address.
		One solution to overcome the IP address shortage is to provide temporary address to devices as and when the device connects to the Internet.
	www.stamweb.com /issue2.html (996 words)

	American surplus blocks Web overhaul - ZDNet UK News
		Since fear of an address shortage is the single biggest argument in favour of a switch, the United States could stay on the sidelines as the rest of the world wrestles with the upgrade over the coming years, networking experts said.
		The $30bn (£18.49bn) a year agency plans to move all its networks to the new Net address standard by 2008, fuelling speculation that the switch -- already under way in Japan and other parts of the world -- may at last be at hand in the United States.
		Makers of operating systems for various types of devices are also beginning to address the issue of IP address depletion.
	news.zdnet.co.uk /internet/0,39020369,39115297,00.htm (1636 words)

	The net address shortage rumour - IP - Breaking Business and Technology News at silicon.com
		He said that around five blocks of "slash eight," or /8, addresses are consumed worldwide each year.
		There are 100 blocks still available in the current IPv4 (IP version 4) system - enough for 20 years, perhaps fewer when 3G (third generation) phones take off, but certainly more than the two years predicted by doomsayers, he said.
		When addresses are not available, there will be no more addresses left for the whole world," he said.
	www.silicon.com /research/specialreports/ip/0,39025017,10004838,00.htm (785 words)

	U.S. shrugs off world's address shortage \| CNET News.com
		Doubts about the need for an Internet address upgrade persist despite increasing pressure on companies seeking to build online services in regions with larger populations than the United States but with fewer available IP addresses.
		To change to a new pool of IP addresses requires an industry overhaul even greater than that IT professionals went through to keep Y2K just a scare at the dawn of 2000.
		While the limited number of available IP addresses is a primary concern for IPv6 advocates, they have other arguments for migrating from IPv4.
	news.com.com /2100-1033-5055803.html (1834 words)

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