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Topic: Locally Administered Address

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Organisational Unique Identifier

MAC address

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	Burned-in address - Wikipedia, the free encyclopedia
		In some cases this address can be overridden by the user, in these cases the second bit of the most significant byte of the Organisationally Unique Identifier (OUI) is changed to a binary 1.
		In this case the NIC is said to be using as a Locally Administered Address (LAA) as its MAC address.
		In this case the NIC is said to be using a Universally Administered Address (UAA) as its MAC address.
	en.wikipedia.org /wiki/Locally_Administered_Address (176 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Local policies or the requirements of applications or other network components may impose additional structure, for example a hierarchical structure.
		It is the address consisting of all one bits, and by convention denotes all stations on the LAN.
		Note that the Broadcast Address is effectively a universal assignment, even though it has the format of a locally administered group address.
	www.syskonnect.de /syskonnect/support/info/doc/canonic.txt (2024 words)

	MAC address - Wikipedia, the free encyclopedia
		MAC addresses permanently attached to a product by the manufacturer are known as "burned-in addresses" (BIA) or sometimes as "Universally Administered Addresses" (UAA).
		The broadcast address, all one bits, is received by all stations on a local area network.
		As a MAC address can be changed, it can be unwise to rely on this as a single method of authentication.
	en.wikipedia.org /wiki/MAC_address (1348 words)

	Standard Group MAC Addresses Tutorial
		A Universally Administered Address Block has been allocated for the assignment of Group MAC Addresses for use in Standards.
		The 48-bit address (universal or local) is represented as a string of six octets.
		Potential users of these addresses should be aware that, since these addresses are derived from the locally administered address space, there are no guarantees that the addresses will be used only for the listed purposes.
	standards.ieee.org /regauth/groupmac/tutorial.html (900 words)

	[No title]
		The driver parameters that may be set are: I/O Address This is the I/O base address being used by an ISA adapter.
		Locally Administered Address This is the 6 byte IEEE address that the adapter should use.
		That is a 6 byte address whose first byte is in the range 40 (hexidecimal) to 7f (hexidecimal).
	www.madge.com /_assets/downloads/software/readme-sco7.txt (3054 words)

	IBM Networking \| IBM Token-Ring PCI Family Adapter
		Use this parameter to specify a locally administered address for the adapter.
		The adapter can be known on the network by its universally administered address (the address encoded in the adapter's memory at the factory) or a locally administered address (a unique, user-assigned address).
		You may need to contact your local network administrator to ensure that the cabling in the building is intact and that the network concentrator to which you are attached is operational.
	www.networking.ibm.com /nhd/webnav.nsf/pages/tra:fej0cn10.htm (3959 words)

	Programmed LAA - Locally Administered Address (Site not responding. Last check: 2007-10-14)
		This option allows you to specify the LAA for the adapter to use as a station address instead of the unique node address provided during manufacture.
		The LAA must be 12 hexadecimal digits long and it is up to the user to ensure that a unique address is used for each node.
		In addition, the first bit of the address must be clear, and the second bit set (setting the first character to '4', '5', '6', or '7' satisfies this requirement).
	www.madge.com /_assets/downloads/lsshelp8.0/UTILS/DOS/ASSIST/HTML/SMART/PROGLAA.HTM (169 words)

	LAN IOA addresses (Site not responding. Last check: 2007-10-14)
		The manufacturer-assigned address that is otherwise known as the burned-in address, preset address, or universally-administered address.
		Using a locally administered address minimizes the reconfiguration work when you replace the adapter.
		You can avoid the reconfiguration work by associating a locally administered address with the adapter and using this address in all devices that communicate with the adapter.
	www.redbooks.ibm.com /pubs/html/as400/v4r5/ic2924/info/RZAJUCHOOSINGLANPHYSICALADDRESS.HTM (188 words)

	Documentation (Site not responding. Last check: 2007-10-14)
		This is the MAC address that was encoded in the adapter memory at the factory.
		In Figure 1, the universally administered address is X'00 06 2E 00 00 01' in non-canonical format, with the most significant bit (MSB) first.
		The universally administered address is unique and is used by network software to distinguish the adapter from others in the network.
	support.dell.com /support/edocs/network/540cf/laa.htm (164 words)

	Zvon - RFC 1469 [IP Multicast over Token-Ring Local Area Networks] - Destination Address Format
		Addresses supplied to or received from token ring interfaces are usually laid out in memory with the bits of each octet in the opposite order from that illustrated, i.e., with bit 0 in the high-order (leftmost) position within the octet.
		Universally administered addresses are those specified by a standards organization such as the IEEE.
		Different functional addresses are made by setting one of the remaining 31 bits in the address field.
	www.zvon.org /tmRFC/RFC1469/Output/chapter3.html (544 words)

	Understanding the token-ring address format
		0: The destination address is an individual address (an address that is associated with a device on the network).
		1: The administrator defined the address (it is a locally administered address).
		A source address is always an individual address (that is, an address that is associated with a device on the network).
	www.redbooks.ibm.com /pubs/html/as400/v4r5/ic2924/info/RZAJUTOKENRINGADDRESSFORMAT.HTM (307 words)

	IBM Networking \| IBM Token-Ring PCI Family Adapter
		The local address must contain 12 hexadecimal characters and can be specified in either most-significant bit (MSB), which is the default, or least-significant bit (LSB) format.
		To specify a node address in MSB format, append an "M" to the end of the address (for example, 400000000001M).
		If you do not assign a locally administered address, the adapter uses the universally administered address (the address encoded in the adapter memory at the factory).
	www.networking.ibm.com /nhd/webnav.nsf/pages/tra:fej0cn13.htm (371 words)

	NC Exchange - Articles What is a MAC Address
		A MAC address is an identifier physically stored inside a network card or similar network interface and used to assign globally unique addresses in some OSI model Layer 2 networks, and in the physical layer of the Internet protocol suite.
		Ethernet MAC addresses are typically given as a string of 12 hexadecimal digits.
		This a group of addresses in the 0x0100.5Enn.nnnn range (where n is any hexadecimal number) that allows a subset of NICs in a LAN to be addressed.
	www.ncexchange.org /48_Articles_What_is_a_MAC_Address.html (327 words)

	Frame Formats
		The Destination Address field indicates the address of the device or devices for which the frame is intended.
		The addresses advertised are the ones assigned to the interface on which the CDP message is sent.
		Address of the interface, or the address of the system if addresses are not assigned to the interface.
	www.cisco.com /univercd/cc/td/doc/product/lan/trsrb/frames.htm (4101 words)

	IEEE MAC Address (Site not responding. Last check: 2007-10-14)
		If logical addresses are set via the adapter's LAN driver, the second bit of the first byte of the source address is set to '1' (U/L bit).
		Group address: the destination is a group of LAN nodes (multicast or broadcast address).
		Locally administered address: the adapter uses a logical address (assigned by network administrator).
	www.synapse.de /ban/HTML/P_LAYER2/Eng/P_lay207.html (444 words)

	L
		Local Area VAXclusters use Ethernet as the common interconnect, and offer the advantages of shared resources, high data availability, and abundant, expandable data-storage capacity for local work groups.
		This is the process of checking the local loop distance-the distance between the customer's telephone equipment and the central office switch.
		The login address is used by IPX, routers, and NetWare file servers to determine exactly where each node is located on a NetWare network or internetwork.
	www.35pickup.com /mulligan/l.htm (2438 words)

	Changing MAC Address
		A Locally administered address (LAA) can be implemented to ensure a unique HW address.
		Setting the LAA bit can be done by using a 0A hex (second bit set 1010, add 2) as the first digit instead of 08 (1000).
		A sometimes crude method is to ping the broadcast address and randomly choose a number that is not being used on the network.
	www.barbary.com /cookbooks/macaddress.html (727 words)

	Token Ring Secrets
		In previous versions of the standard, the least significant 14 bits of the first two bytes of the address were defined as the ring ID, allowing hierarchical addressing (a practice that is now discouraged).
		Therefore, the following sets of locally administered addresses should be used with care: X'40 00 xx xx xx xx', X'7F FF xx xx xx xx', X'C0 00 xx xx xx xx', and X'FF FF xx xx xx xx' (where x is any hexadecimal value).
		Here's the rub: When using locally administered addresses in these ranges, it is possible for the Duplicate Address Test to fail when another station is using an address that only differs by the first bytes.
	www.pmg.com /otw_nwsl/past_tokn.htm (750 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Locally administered addresses (LAA) are MAC addresses which have the second least significant bit (LSB) of the first octect is set to '1' (for example, 'xxxxxx1x'.
		When an LAA is assigned, it overrides the in-memory copy of the Global address during driver initialization.
		Broadcast address is a special case where all bits of the MAC address are set to '1' (e.g.
	www.mynetwatchman.com /pckidiot/chap04.htm (1650 words)

	TokenLink Velocity XL PCI Network Interface Card User Guide
		Universal address (UAA)-A default address for the NIC.
		Locally administered address (LAA)-A user-assigned address that overrides the NIC's universal address.
		This address must consist of 12 hexadecimal digits and must be unique throughout the network.
	infodeli.3com.com /infodeli/tools/nic/3c359/docs/ugb/chap3a3.htm (782 words)

	Freedom from IP address overload
		Many of these same companies added to the paperwork hell by mandating the manual assignment of a locally administered address for each network adapter, which overrode the burned-in network adapter ID. The resulting workload was a millstone around network administrators' necks.
		We asked that the tools support the DNS and DHCP specifications, be able to assign IP addresses across multiple routed subnet domains, track and report on address assignments, and work in a heterogeneous platform environment (see "How we did it").
		Whether it's a Class A, B or C address, an IP address should be relevant to the computer or network device to which it's assigned.
	www.networkworld.com /reviews/2000/0501rev.html (3612 words)

	Changing the Locally Administered Address
		When you connect to an IBM host, it is possible that a locally administered address (LAA) has been associated with the IBM host resources for connection to a Windows 2000 Professional–based computer.
		On the IBM host side of the connection, LAAs usually are configured on either a Cluster Controlleror on the computer that is running SNA Server.
		An LAA rather than a burned-in Universally Administered Address (UAA) on the network adapter is used so that neither the Cluster Controller nor the computer that is running SNA Server has to be reconfigured every time a network interface card card must be replaced on a workstation that is running Windows 2000 Professional.
	www.microsoft.com /resources/documentation/Windows/2000/server/reskit/en-us/prork/prcj_ibm_qwdx.asp?frame=true (233 words)

	MAC Addresses (Site not responding. Last check: 2007-10-14)
		Certified Software Corporation tried to offer small blocks of MAC addresses for use on prototype and low quantity hardware where the expense of buying a "Organizationally Unique Identifier" is not warranted.
		The LSB bit is set to one to indicate that this is a group address instead of an individual address.
		If this bit is one then the entire 48 bit address is locally administrated and no OUI is used.
	www.certsoft.com /mac.htm (190 words)

	MAC address - free-definition (Site not responding. Last check: 2007-10-14)
		In computer networking a media access control address (MAC address) is a code on most forms of networking equipment that allows for that device to be uniquely identified.
		Some ISPs bind their service to a specific MAC address; if the user then changes their network card or intends to install a router, the service won't work anymore.
		Under Windows XP, the MAC address can be changed in the Ethernet adapter's Properties menu, in the Advanced tab, as "MAC Address", "Locally Administered Address", or "Ethernet Address".
	www.free-definition.com /MAC-address.html (714 words)

	TokenExpress PRO LAN Adapter - How to Configure Locally Administered Addresses (LAA)
		A locally administered address is a node or network address you define for your adapter.
		Intel assigns an address to the adapter at the factory.
		A locally administered address consists of a 12-digit hexadecimal number.
	www.intel.com /support/tokenexpress/pro/sb/cs-016295.htm (435 words)

	Microsoft Windows XP - Changing the Locally Administered Address (Site not responding. Last check: 2007-10-14)
		When you connect to an IBM host, it is possible that a locally administered address (LAA) is associated with the IBM host resources for connection to a computer running Windows XP Professional.
		On the IBM host side of the connection, LAAs are usually configured on a cluster controller on the computer that is running Host Integration Server 2000.
		An LAA is used so that neither the cluster controller nor the computer that is running Host Integration Server 2000 requires reconfiguration every time a network interface card is replaced on a workstation running Windows XP Professional.
	www.microsoft.com /resources/documentation/Windows/XP/all/reskit/en-us/prcj_ibm_ziaf.asp?frame=true (245 words)

	Token Ring Adapters - Using Client 32, Workstations are Unable to Join the Ring in Windows 95* OSR2
		Bytes 0-3 of the MAC address are used as bytes 2-5 of the functional address.
		Another method, which we recommend, is to configure the TokenExpress™ adapter driver to use a Locally Administered Address instead of the adapter's burned-in address.
		Under "Advanced", select the "network address" variable, and enter a locally administered address of the form 4000xxx0xxxx.
	support.intel.com /support/tokenexpress/sb/CS-012024.htm (619 words)

	Notes on Installing and Use of the Madge (Site not responding. Last check: 2007-10-14)
		This is the 6 byte IEEE address that the adapter should use.
		A valid locally administered address must be specified for mirroring.
		A request has been made to set the adaper's node address to a value that is not a valid locally administered address.
	www.fsc-pc.de /server/BIMs/General/madge/mk3/uw7readme.htm (2814 words)

	ID 16733 - Why do all my ethernet interfaces have the same ethernet MAC address?
		The intel (i.e.), lance (le) ethernet interfaces along with the SunSwift[TM] (hme) and SunFastEthernet[TM] 1.0 (be) and 2.0 Adapters (hme) use the host assigned address of the CPU OpenBoot PROM.
		To manually change the ether address, use the ifconfig "ether" option if this is needed on a NIC that does not implement local-mac-address.
		A crude method that is sometimes used to select a address is to ping the broadcast address and randomly choose a number that is not being used on the network in the form of 8:0:20:XX:XX:XX.
	www.filibeto.org /sun/sunray-users/lib/sunsolve/16733.html (894 words)

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