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Topic: Logical link control


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  ANSDIT - The letter "L"
Cohesion in which the activities of a module are logically similar; for example, the processing of data from different input media in one module.
In text processing, an element of the specific logical structure of a document, which may have a meaning that is significant to the application or user; for example: a chapter, section, a paragraph.
Portions of one logical record may be located in different physical records, or several logical records or parts of logical records may be located in one physical record.
www.incits.org /tc_home/k5htm/l2.htm   (1604 words)

  
  Logical link control
Logical Link Control (LLC) is the upper portion of the data link layer of a local area network, as defined in IEEE 802.2.
The LLC sublayer presents a uniform interface to the user of the data link service, usually the network layer.
As part of the encapsulation chain the the LLC is used to enable layer 2 to talk to the higher layers in a standardized way, regardless of which lower-level technology is used.
www.ebroadcast.com.au /lookup/encyclopedia/ll/LLC.html   (409 words)

  
 Logical Link Control - Wikipedia, the free encyclopedia
According to the IEEE 802 family of standards, Logical Link Control (LLC) is the upper sublayer of the OSI data link layer.
The LLC is the same for the various physical media (such as Ethernet, token ring, WLAN).
For example, while HDLC specifies both MAC functions (framing of packets) and LLC functions (protocol multiplexing, flow control, and detection and retransmission of dropped packets), some protocols such as Cisco HDLC can use HDLC-like packet framing and their own LLC protocol.
en.wikipedia.org /wiki/Logical_link_control   (191 words)

  
 Logical link control: Facts and details from Encyclopedia Topic   (Site not responding. Last check: )
Logical Link Control (LLC) is the upper portion of the data link layer data link layer quick summary:
Ieee 802.2 is the ieee standard defining logical link control (llc), which is the upper portion of the data link layer for local area networks....
Transmit flow control: in data communications systems, control of the rate at which data are transmitted from a terminal so that the data can be received by...
www.absoluteastronomy.com /encyclopedia/l/lo/logical_link_control.htm   (1165 words)

  
 ANSDIT - The letter "L"   (Site not responding. Last check: )
Cohesion in which the activities of a module are logically similar; for example, the processing of data from different input media in one module.
In text processing, an element of the specific logical structure of a document, which may have a meaning that is significant to the application or user; for example: a chapter, section, a paragraph.
Portions of one logical record may be located in different physical records, or several logical records or parts of logical records may be located in one physical record.
www.ncits.org /tc_home/k5htm/l2.htm   (1604 words)

  
 [No title]   (Site not responding. Last check: )
LLC is independent of the lower layers so that the changing of the air interface would affect the network part of the mobile network as little as possible.
LLC data is transmitted between the Um and Gb interfaces by a logical link control protocol relay LLC RELAY.
logical link control protocol is similar to the logical link control protocol between a mobile station and a support node belonging to the core network of the radio system in a public packet radio service.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/91385.011129&ELEMENT_SET=DECL   (5373 words)

  
 Synchronous Data Link Control (SDLC)and Derivatives
Qualified Logical Link Control (QLLC) is a link-layer protocol defined by IBM that enables SNA data to be transported across X.25 networks.
LLC Type 2 (often called LLC2) service establishes logical connections between sender and receiver and is therefore connection oriented.
QLLC provides the data link control capabilities that are required to transport SNA data across X.25 networks.
elqui.dcsc.utfsm.cl /util/redes/www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/sdlcetc.htm   (1467 words)

  
 Communications Programming Concepts - Qualified Logical Link Control (DLCQLLC) Overview
Qualified logical link control (QLLC) data link control (DLCQLLC) is one of the generic data link controls.
The data link control and device handler components are jointly responsible for:
The actual number of possible link stations may be less than 255, based on the number of virtual circuits available from the X.25 device.
www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/aixprggd/progcomc/qllc_ovw.htm   (1430 words)

  
 IEEE 802.3 Logical Link Control
When the LLC protocol is used, the MAC layer SDU (the payload data) is further encapsulated, adding two additional headers.
The LLC protocol is based on the HDLC link protocol and uses an extended 2-byte address.
A control field is also provided which may support a number of HDLC modes.
www.erg.abdn.ac.uk /users/gorry/course/lan-pages/llc.html   (241 words)

  
 Packaging Guide for LPP Installation - Data Link Controls Package Information
The Data Link Controls package contains communications layer-2 data link controls that support the AIX Generic Data Link Control (GDLC) interface for wide area and local area networks.
The data link controls can be installed into the system at any time.
These data link controls become usable, however, when the desired hardware communications adapters and software device drivers are also installed.
www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/aixins/inslppkg/DataLinkCtrl.htm   (411 words)

  
 LAN Data Link Layer Protocols - CIF | Ethernet | FDDI | GARP | GMRP | GVRP | LLC | Multiprotocol over ATM | SNAP | SRP ...
In the 802.3 protocol, the value (46-1500 Dec) is the length of the inner protocol, which is the LLC encapsulated inner protocol.
LLC type I service provides a datalink connectionless mode service, while LLC type II provides a connection-oriented service at the datalink layer.
In this instance, the LLC and SNAP headers within the AAL5 PDU are used to identify the encapsulated protocol.
www.protocols.com /pbook/lan.htm   (1957 words)

  
 LAN Logical Link Control (LAN LLC)   (Site not responding. Last check: )
The upper portion of the data link layer.
Beneath the LLC sublayer is the Media Access Control (MAC) sublayer (CSMA/CD).
LLC specifies the mechanisms for addressing stations across the medium and for controlling the exchange of data between two users.
www.dsg.cs.tcd.ie /CHI/lecture2/3_intro_lans/sld036.htm   (59 words)

  
 LLC (Logical Link Control) (Linktionary term)
The LLC is part of the data link layer in a protocol stack.
The data link layer controls access to the network medium and defines how upper-layer data in the form of packets or datagrams is inserted into frames for delivery on a particular network.
Note that LLC resides on the upper half of the data link layer.
www.linktionary.com /l/llc.html   (355 words)

  
 CCNA Study Notes - OSI - Data Link Layer
Finally, flow control moderates the transmission of data so that the receiving device is not overwhelmed with more traffic than it can handle at one time.
The Data Link layer is divided into two sublayer by the 802 standards: the Logical Link Control (LLC) and Media Access Control (MAC) sublayers.
The LLC sublayer is defined in 802.1 and 802.2.
defoenet.com /ccna/osi_l2.html   (1380 words)

  
 [No title]
Common to the above is the 802.2 standard that defines the logical link control common to many 802 networks.
A link control protocol to establish, configure, and test the data-link connection, allowing for option negotiation between the ends.
H. Since PPP, like SLIP is used across serial links, it is desirable to reduce the frame size; using link control protocol most implementations negotiate to omit the constant flag and address fields and to reduce the protocol field from 2 bytes to 1.
www.ship.edu /~jcthom/schedule/csc431/Notes/LinkLayer.html   (1421 words)

  
 Media Access Control - Wikipedia, the free encyclopedia
The Media Access Control (MAC) sublayer is the part of the OSI network model data link layer that determines who is allowed to access the physical media at any one time.
It acts as an interface between the Logical Link Control sublayer and the network's physical layer.
the control of access to the physical transmission medium (i.e.
en.wikipedia.org /wiki/Media_Access_Control   (255 words)

  
 Introduction to Mobile Scaleable Link (MSL) Technology   (Site not responding. Last check: )
The LLC is independent of the characteristics of the physical link.
Logical connections are established between client and server components on the AS and CS, respectively.
Thus, one logical connection may be used for packet-based communication between the Cellular client and server, while another logical connection may be used for voice streaming between audio client and server components.
www.intel.com /cd/ids/developer/asmo-na/eng/65767.htm?page=4   (618 words)

  
 [No title]   (Site not responding. Last check: )
A SGSN LLC layer 30E is logically coupled to the MS 100 LLC layer 265 (shown as the dashed line 266A).
On the MS 100 side, and since the interface between the LLC 265 and the RLC 260 is internal the MS 100, the LLC 265 may pass mapping information to the RLC 260 using internal signaling, without requiring a modification to the specifications governing transfer over the air interface.
For example, LLC PDUs may carry a new flow identifier and each flow/group of flows is mapped to a particular TBF based on the value of the identifier.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/81817.031002&ELEMENT_SET=DECL   (4795 words)

  
 Computer Networks : What is logical link control
Using the Winsock Control in Client/Server Applications: By S.S. Ahmed Rating: 3.9 out of 5 Rate this article email this article to a colleague Overview The Internet Transfer Control (ITC) is a handy control for Internet programming, but there is another control that is even more robust and helps programmers to create more flexible applications.
The link to....[Read More] Posted by Pete On 24/11/05 At 06:49 PM Microsoft and Yahoo in messaging link-up (India Daily): Microsoft and Yahoo have added each other to their ?buddy lists?, announcing a landmark agreement on Wednesday to link two of the world?s biggest instant-messaging (IM) services.
Which Solaris 9 command should be used as a substitute for all the /dev logical link generation.
www.geekinterview.com /question_details/3237   (576 words)

  
 Understanding Logical Link Control - Cisco Systems
The V bit indicates that the NS number carried by the control field in bytes 0 and 1 is invalid.
The Z bit indicates that the NR that the control field carries indicated in bytes 0 and 1 does not refer to either the next I frame or an I frame that has already been transmitted but not acknowledged.
A link station uses the XID command to convey characteristics of the sending node and to cause the remote link station to respond with an XID response.
www.cisco.com /en/US/tech/tk331/tk336/technologies_tech_note09186a0080094777.shtml   (3545 words)

  
 Networking Technology - Questy's study guide
The Data Link layer deals with issues on a single segment of the network, the Network layer deals with issues spanning networks.
The upper sub-layer of the Data Link layer, the Logical Link Control (LLC), performs Data Link layer functions related to the Network layer, such as providing and maintaining the link to the network.
The portion of the frame for which LLC is responsible is called a Protocol Data Unit (LLC PDU or PDU).
www.computerguru.net /tech/netw31.htm   (532 words)

  
 What is Logical Link Control layer? - a definition from Whatis.com - see also: LLC
- The Logical Link Control (LCL) layer is one of two sublayers of the
The LCL layer is concerned with managing traffic (flow and error control) over the physical medium.
The other Data-Link sublayer is the Media Access Control layer.
searchnetworking.techtarget.com /sDefinition/0,,sid7_gci756009,00.html   (303 words)

  
 Bluetooth Technology
A Synchronous Connection-Oriented (SCO) link is a point-to-point link between the master and specific slave.
A master can support up to 3 SCO links to one or multiple slaves, while a slave can support up to three SCO links to one master or up to two SCO links to different masters.
LC channel carries low-level link control information such as ARQ and flow control; LM channel carries messages for the Link Manager layer, UA, UI and US channel carries asynchronous, isochronous and synchronous user data respectively.
progtutorials.tripod.com /Bluetooth_Technology.htm   (1192 words)

  
 Logical Link Control
The Logical Link Control is an IEEE 802.x protocol loosely based on HDLC that provides the upper layer networking software (Novell IPX or Internet IP) access to the MAC sublayer and the unde rlying physical hardware.
LLC 2 - Connection oriented, Uses HDLC Asynchronous Balanced Mode for transfer.
LLC1 is the most common type however as it is used to transmit IP datagrams as well as ARP/RARP packets.
www.inetdaemon.com /tutorials/lan/ethernet/llc.shtml   (102 words)

  
 What is Logical link control of LDAP? - Blurtit
According to the IEEE 802 family members of standards, Logical Link Control (LLC) is the higher associate layer of the OSI data link layer.
The LLC is the similar for the various physical medium (such as Ethernet, token ring, and WLAN).
An LLC subtitle tells the Data Link layer what to do with a small package once a border is received.
www.blurtit.com /q999996.html   (280 words)

  
 CHAPTER —   (Site not responding. Last check: )
It is an essential part of a LAN because all the LANs work on a shared medium and there must be a method to control the access to the medium and to resolve contention if many nodes try to access the network at the same time.
The Logical Link Control (LLC) Layer essentially does the function of interfacing the MAC layer with the higher layers.
In ADHOC type of networks, where there is an absence of a control coordinator, no PCF access method is specified in the IEEE 802.11 draft standard(it actually involves the function of a point coordinator incorporated inside the access point).
www.ittc.ku.edu /~rvc/projects/wirelan/datalink.htm   (2092 words)

  
 Ventus Networks: Glossary
A protocol that operates at the data link layer 2 of the OSI architecture.
Link-state algorithms creates a consistent view of the network and are therefore not very prone to routing loops, but they achieve this at the cost of relatively greater computational difficulty and somewhat more widespread traffic - compared with distance vector routing algorithms.
A connection-oriented OSI logical link control sub-layer protocol.
www.ventusnetworks.com /glossary/l.html   (368 words)

  
 Implementing the New DUAL Link Layer in FreeBSD
This is achieved by using link layer addresses tailored to the network protocol used, minimising the link layer overheads, and by incorporating a modified IP header compression scheme adapted for use in a multi-point environment.
On a broadcast link, such as DUAL, the connection number in the compressed header is not sufficient to identify the TCP connection.
As DUAL is a Link Layer (or more strictly, a LLC layer), it was implemented as an `interface' in the network stack, which handles KISS (Chepponis & Karn 1985) frames, a close relative of SLIP, to interface with KISS-mode packet radio hardware.
www.csu.edu.au /special/auugwww96/proceedings/freebsd/freebsd.html   (3831 words)

  
 Continuous Computing | Products | Trillium | Logical Link Control (LLC)
LLC provides logical links between an MS and SGSN using the services of the Radio Link Control/Media Access Control (RLC/MAC).
An SGSN uses LLC to provide logical links to the MSs within its area.
Negotiates and renegotiates the LLC layer and upper layer parameters.
www.trillium.com /products/trillium/technical/llc.html   (443 words)

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