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Topic: IEEE 802.1Q

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IEEE 802.1Q - Wikipedia, the free encyclopedia IEEE 802.1Q is also the name of the standard issued by this process, and in common usage the name of the encapsulation protocol used to implement this mechanism over Ethernet networks. IEEE 802.1Q also defines the meaning of a virtual LAN or VLAN with respect to the specific conceptual model underpinning bridging at the MAC layer and to the IEEE 802.1D spanning tree protocol. IEEE 802.1Q was a project in the IEEE 802 standards process to develop a mechanism to allow multiple bridged networks to transparently share the same physical network link without leakage of information between networks (i.e. en.wikipedia.org /wiki/IEEE_802.1Q   (469 words)

IEEE 802.11 - Wikipedia, the free encyclopedia The original version of the standard IEEE 802.11 released in 1997 specifies two raw data rates of 1 and 2 megabits per second (Mbit/s) to be transmitted via infrared (IR) signals or in the Industrial Scientific Medical frequency band at 2.4 GHz. The IEEE set up a dedicated task group to create a replacement security solution, 802.11i (previously this work was handled as part of a broader 802.11e effort to enhance the MAC layer). This standard is continuously updated by means of amendments such as IEEE 802.11a, IEEE 802.11b etc. Periodically a new version of the IEEE 802.11 standard is produced combining the previous version of the standard and all amendments published up to that date. en.wikipedia.org /wiki/WiFi,_802.11   (3512 words)

Switch 4007 Implementation Guide Tagged IEEE 802.1Q data frames that are received on the system are assigned to the VLAN that corresponds to both the VID contained in the tag and the protocol type. IEEE 802.1Q defines the bridging rules for VLANs (ingress and egress rules, as described in detail in "Rules of VLAN Operation" later in this chapter). Use this mode for VLANs in an IEEE 802.1Q environment. support.3com.com /infodeli/tools/switches/4000/4007/13673/9i3vla3a.htm   (1175 words)

rfc2674.txt IEEE 802.1Q defines port-based Virtual LANs where membership is determined by the bridge port on which data frames are received. The original IEEE 802.1D is augmented by IEEE 802.1Q-1998 [802.1Q] to provide support for 'virtual bridged LANs' where a single bridged physical LAN network may be used to support multiple logical bridged LANs, each of which offers a service approximately the same as that defined by IEEE 802.1D. Such VLANs are outside the scope of IEEE 802.1Q but it is convenient to be able to manage them in the same way using this MIB." SYNTAX Unsigned32 Bell, et al. www.ietf.org /rfc/rfc2674.txt   (8005 words)

Category:IEEE 802 - Wikipedia, the free encyclopedia The main article for this category is IEEE 802. en.wikipedia.org /wiki/Category:IEEE_802   (55 words)

IEEE 802.1 IEEE Standards runs a Get IEEE802 programme which allows anyone to download the standards for free, 6 months after publication. The IEEE 802.1 Working Group is chartered to concern itself with and develop standards and recommended practices in the following areas: 802 LAN/MAN architecture, internetworking among 802 LANs, MANs and other wide area networks, 802 Security, 802 overall network management, and protocol layers above the MAC and LLC layers. Project naming: 802.1 projects are identified using project names such as 802.1Q and 802.1ad. grouper.ieee.org /groups/802/1   (409 words)

LAN/MAN Standards Resource Page Amendment to IEEE Std 802.1Q, 1998 Edition describes enhancements to allow for classification of incoming packets by methods other than source port. IEEE 802.3z-1998 is now published as part of the latest edition of 802.3. IEEE 802.3ac-1998 is now published as part of the latest edition of 802.3. webpages.charter.net /jeffkoehler/jeffkoehler_com/Standards/Standards_resource_page.html   (1525 words)

VLAN: Virtual Local Area Network (Virtual LAN) and IEEE 802.1Q The IEEE 802.1Q standard defines the operation of VLAN Bridges that permit the definition, operation and administration of Virtual LAN topologies within a Bridged LAN infrastructure. The key for the IEEE 802.1Q to perform the above functions is in its tags. VLAN: Virtual Local Area Network and IEEE 802.1Q www.javvin.com /protocolVLAN.html   (788 words)

Are VLANs on the comeback trail? IEEE 802.1Q is even taking some of the steam out of ATM in the campus, according to Mike Myrick, manager of technology services at the University of Mississippi. IEEE 802.1Q specifies how VLANs can be created by grouping switch ports into virtual LANs, but vendors have also enabled customers to create VLANs based on the protocol - such as IP or IPX - being carried. The advancements - which build on the standardization of VLAN tagging in IEEE 802.1Q last year - are renewing interest in the technology, even if some analysts say Layer 3 switches do away with the need for VLANs. www.networkworld.com /news/1999/1025vlan.html   (842 words)

Transcend Network Administration Guide IEEE 802.1Q VLANs are based on the IEEE 802.1Q Virtual Bridged Local Area Networks standard, which proposes a standardized format for MAC-Layer frame tagging. 802.1Q Mode - This means that the port is a tagged member of the VLAN, and inherits the IEEE 802.1Q tag that you assign to the VLAN. IEEE 802.1Q frame tagging enables ports to be assigned to more than one VLAN. support.3com.com /infodeli/tools/netmgt/temwin/tem6.2/netadmin/11vlana4.htm   (1620 words)

Chapter 1. Introduction to Data Communications When the IEEE 802.1q packet reaches its destination switch, its header is stripped off and the Ethernet packet inside is sent to its destination computer. The IEEE 802.1q standard adds 16 bytes of overhead onto the IEEE 802.3 Ethernet packet. When an Ethernet packet reaches a VLAN switch, it is set inside an IEEE 802.1q packet. www.csulb.edu /~hparedes/chapter7_files/slide0148.htm   (133 words)

Force10 Networks: Service Providers In addition to IEEE 802.1p/Q, which includes the specification for both 802.1Q for tagged VLANs and 802.1p for Quality of Service (QoS) marking/signaling, a number of other enhancements to the Ethernet standards have made to improve the robustness of bridged Ethernet networks. Because of their simplicity, flexibility, cost/effectiveness, scalability, and resiliency, 802.1Q Ethernet Layer 2 backbones are currently the technology of choice for Ethernet MANs. If this prediction proves to be correct, near term investments in 802.1Q Layer 2 Metros can be expected to have very long service lifetimes spanning both current and next generation architectures. www.force10networks.com /applications/metro_ethernet.asp?content=3   (608 words)

jeya-vlan-8021q-mib-01.txt The mapping of IEEE 802.1q management objects is also included. In particular it describes objects used for managing bridges based on the IEEE 802.1q draft standard between Local Area Network (LAN) segments. The definitions presented here are based on Section 7, "VLAN Bridge management" of IEEE Draft 802.1q-1997 [7]. ietfreport.isoc.org /idref/draft-jeya-vlan-8021q-mib   (2008 words)

IP routers support for IEEE 802.1Q VLAN tagging Approaching each of the leading router manufacturers separately is time consuming and not easy because most of them show some kind of bias toward or against IEEE 802.1Q effort and try to apply a proprietary approach to combining leyer 2 switching with routing. In other words, using IEEE 802.1Q terminology, the switch would have to implement Shared VLAN Learning as opposed to Independent VLAN Learning. Let's assume the pure port-based VLAN model is used (the port based model is the only official model really covered in the most recent draft D10 of the IEEE 802.1Q proposal). www.cctec.com /maillists/ietf/msg00073.html   (581 words)

IEEE 802.1 P,Q - QoS on the MAC level IEEE standard 802.1p is a part of the IEEE standard 802.1D. IEEE 802.1p standard has a prioritation scheme, which is in fact quite good. IEEE 802.1p standard itself does not limit the amount of resouces one application uses, but many implementations do. www.tml.tkk.fi /Opinnot/Tik-110.551/1999/papers/08IEEE802.1QosInMAC/qos.html   (2958 words)

IEEE Standards Online Local and Metropolitan Area Networks (LAN/MAN) Plus Drafts Standards Subscription IEEE Std 802b-2004 (Amendment to IEEE Std 802 ® -2001,as amended by IEEE Std 802a-2003) IEEE Std 802.16e™-2005 and IEEE Std 802.16™-2004/Cor 1-2005 5 IEEE 802.5r and IEEE 802.5j, 1998 Edition (R2003) (ISO/IEC 8802-5:1998/Amd.1), IEEE Standard for Information technology--Telecommunications and information exchange between systems--Local and metropolitan area networks--Specific Requirements--Part 5 Token ring access method and physical layer specifications--Amendment 1: Dedicated Token Ring Operation and Fibre Optic Media standards.ieee.org /catalog/olis/lanman.html   (1679 words)

Connectionless QoS, Part 2 The new application introduced by IEEE 802.1Q defined a VLAN registration protocol for propagating registration across the network by tagging frames with a VLAN ID, allowing the tags to be sent to multiple switches. IEEE 802.1Q established a new method for setting up virtual LANs across shared media by defining a new frame type called a " tagged frame. With IEEE 802.1p and 802.1Q, we saw the introduction of some important concepts that have been carried forward for further QoS development. www.networkworld.com /newsletters/converg/2001/01114280.html   (555 words)

79830.001228&ELEMENT_SET=DECL The standard IEEE 802.1Q, which has been adapted as industrial standard for VLAN, is based on standard LAN switches according to IEEE 802.2 standards. In the embodiment it is specified that the switched domain 5 operates according to the standards IEEE 802.1D, IEEE 802.1Q and IEEE 802.1p, which is a substandard to IEEE 802.1D. If the link board in the user device supports the standards 802.1Q and 802.1p, this board can directly label the CoS bits 22 in the packets which is to be transmitted from the user device via the switched domain 5 to a receiver. www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/79830.001228&ELEMENT_SET=DECL   (5485 words)

IEEE 802 Perspectives In the present IEEE 802.1Q standard, all untagged frames received on a given port are identified with the same VLAN. This issue will consider the standard for Virtual Bridged Local Area Networks, which was developed in the IEEE 802.1Q project, part of the IEEE 802.1 Higher Layers Working Group. These perspectives, which will appear in each issue of IEEE Network, are aimed to provide the reader with highlights of IEEE 802 activities to enable better dissemination of these standards into marketable products as well as seek new ideas to be brought into the IEEE 802 arena. www.comsoc.org /ni/public/2000/jul/ni802.html   (796 words)

Bridging Between IEEE 802.1Q VLANs The BPDU of the CST and BPDU of the VLAN equal to the PVID of the 802.1Q trunk are sent untagged. The VID is the identification of the VLAN, which is basically used by the standard 802.1Q and, being on 12 bits, it allows the identification of 4096 VLANs. PVST+ provides support for 802.1Q trunks and the mapping of multiple spanning trees to the single spanning tree of 802.1Q switches. www.cisco.com /univercd/cc/td/doc/product/software/ios121/121newft/121t/121t3/dtbridge.htm   (2205 words)

IEEE 802.1Q overcomes the restrictions on router-based networks As ever, it was deemed necessary to introduce standards for VLan products, and the IEEE 802.1Q is the result. IEEE 802.1Q overcomes the restrictions on router-based networks This means that network managers who want to implement VLans are able to do so without having to purchase all the equipment needed from the same vendor. www.itweek.co.uk /articles/print/2055082   (507 words)

Intel® Express 460T Standalone Switch - Virtual Local Area Networks (VLANs) The third type of VLAN supported by the Express 460T switch is based on the IEEE 802.1Q specification. Because IEEE 802.1Q VLANs can span networks, managing changes to the VLAN poses a challenge for network administrators. GARP (Generic Attribute Registration Protocol) is defined by the IEEE 802.1D (1998 Edition) specification and is the mechanism used by switches and end nodes to propagate VLAN configurations across the network domain. support.intel.com /support/express/switches/460/sb/cs-020922.htm   (1823 words)

IEEE 802.1: 802.1z - 802.1Q Maintenance This amendment to IEEE Std 802.1Q is intended to document maintenance items identified in the text of IEEE Std 802.1Q-1998. These are documented in the usual form for amendments to 802 standards; i.e., as an explicit set of editing instructions that, if correctly applied to the text of 802.1Q, will create a corrected document. The document identifies any proposed changes to the text that have arisen as a consequence of maintenance activity. www.ieee802.org /1/pages/802.1z.html   (118 words)

TEG-PCISX (64-bit 1000Base-SX Gigabit Ethernet Adapter with SC Connector) One of the advanced features includes IEEE 802.1Q VLAN tagging and works with any switch that complies with IEEE 802.1Q specifications. With IEEE 802.1Q multiple VLAN support, it enables flexible and secure network configuration. Complies with IEEE 802.3 for 10/100Mbps Ethernet and the IEEE 802.3z for 1000Mbps Ethernet www.trendware.com /products/TEG-PCISX.htm   (358 words)

Product Detail This IEEE Standards product is part of the 802 Family on LAN/MAN. Abstract: This standard defines an architecture for Virtual Bridged LANs, the services provided in Virtual Bridged LANs, and the protocols and algorithms involved in the provision of those services. The "Get IEEE 802" pilot program grants public access to view and download individual electronic (PDF) IEEE Local and Metropolitan Area Network (802) standards at no charge. IEEE 802 standards will be added to the "Get IEEE 802" program in PDF format six months after publication.-- shop.ieee.org /ieeestore/product.aspx?product_no=SS95124   (159 words)

IEEE 802.15 and Bluetooth: WPAN Communications IEEE 802.15/Bluetooth, IEEE 802.11/WLAN and IEEE 802.16/WiMAX technologies are complementary to each other and each play a unique role in today’s wireless communications. The IEEE 802.15 Working Groups are making progress to improve the Bluetooth standards. 802.15 is a wireless specification defined by IEEE for wireless personal area networks (WPANs), which has characters such as short-range, low power, low cost, small networks and communication of devices within a Personal Operating Space. www.networkdictionary.com /protocols/80215.php   (433 words)

IEEE 802.1q Unauthorized VLAN Traversal Weakness The 802.1q standard is susceptible to issues that allow attackers to send and receive packets from one VLAN to another without authorization. By spoofing various Ethernet frame fields such as the source or destination MAC addresses, IP addresses, and VLAN tags, attackers may cause packets to traverse from one VLAN to another, and possibly back again. www.securityfocus.com /bid/615/discuss   (140 words)

IEEE 802.1: 802.1Q - Virtual LANs IEEE 802 Local Area Networks (LANs) of all types may be connected together with Media Access Control (MAC) Bridges, as specified in ISO/IEC 15802-3. This standard defines the operation of Virtual LAN (VLAN) Bridges that permit the definition, operation and administration of Virtual LAN topologies within a Bridged LAN infrastructure. Last modified by njarvis, at 4:06pm on Wed, 8 Aug 2001 grouper.ieee.org /groups/802/1/pages/802.1Q.html   (96 words)

[Bridge] IEEE 802.1Q (VLAN-) Bridge incl. GARP, GMRP, GVRP, MSTP and LMMS I'm trying to build a fully IEEE 802.1Q-2003-standard compliant bridge. 802.1Q) and the LMMS (LAN/MAN Management Services, used for remote-management (incl. I was delighted about your bridge implementation in the Linux kernel which takes most of the low-layer work from me. (Thanks!) For the higher layer stuff I found (google, your docs) only your STP implementation, so what's missing is GARP(Generic Attribute Registration Protocol, acc. lists.osdl.org /pipermail/bridge/2004-April/000292.html   (190 words)

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