VG-AnyLan (VG =Voice Grade) is a joint development of AT&T Microelectronics, Hewlett-Packard, and IBM and is standardized by the newly created IEEE. VG-AnyLAN is a star topology. The maximum amount of repeaters (HUBs) in one network is five. The maximum length of a complete network depends on the. Overview. VG-AnyLAN is a new network technology, defined by the IEEE standard, for transmitting Ethernet/IEEE and token ring/IEEE

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Ethernet Expansion What is Ethernet Frame? Please help improve this article by adding citations to reliable sources.

That way, high priority traffic can’t “hog” the available speed of the network. All high-priority requests will be serviced before the normal priority requests. It is not that simple as it appears.

After being recognized, this person says his piece and then sits back down. It is compatible with both Ethernet and Token Ring frame types, which is a feature designed into it to allow easy migration from either type of network to the new VG-AnyLAN standard. Transmission System — What is an Transmission System?

VG-AnyLAN MIB (vgmib) –

The first faction argued that, since IEEE Fast Ethernet switches were not commonplace at first because of high cost and limited availability so, initially, 100bg had a significant performance advantage. The maximum amount of repeaters HUBs in one network is five. Except when there is so much high-priority data that needs to be transported that it would be impossible for a normal-priority packet to get on the network.


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See Figure Two for an example of how this is done. This article needs additional citations for verification.

Flooding — What is flooding? Thus, the IEEE The HUB scans its ports in a round-robin fasioned way. This saves the customer the expense of rewiring the building – which in many cases can be far higher than the cost of the equipment used to make a VG-AnyLAN network.

This makes BaseVG an inherently half-duplex medium like e. All of the hubs in the network negotiate among themselves and schedule a time when they will allow the transmission to take place. Any device wishing to transmit first sends a request to its hub. The request has two possible priorities; normal and high.

This way 3 levels can be made. The hubs are intelligent devices and act as a “traffic cop” for devices wishing to transmit data to the network.

Characteristics of Digital Signal Optical Fibers: When this is the case there is time-out timer that keeps track of that the normal-priority request is raised to a high-priority request and gets into the same round-robin schedule and is send.

The high-priority is used for time critical applications. Returning to our meeting example, let’s say that the House is discussing a mundane topic such as farm subsidies and all of a sudden the Navy is attacked by aliens from Space. What is Twisted-Pair Cable?


Because the token stayed within the hub, it did not have to traverse long cables going to every node as in ARCNET and Token Amy therefore becoming faster than those other deterministic networking standards and being less susceptible to cabling problems, network card failures, and line interference.

When the hub gets such a request, it will 100vy the “High Priority” traffic to be sent before any of the lower priority traffic. The top level HUB root is called level 1 and every step down adds a level. This network topology is very useful in cases where individual users don’t require a lot of bandwidth, but segmenting the network is needed to prevent a large number of users from causing congestion.

Type of bound transmission media Explain Unbound transmission media – What is Unbound transmission media. Bridges — What is Bridges? The reason for this is clock synchronization for the receiver circuitry, and it adds an easy way for error checking.

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A good real-world example of DPA in action would be a formal meeting, such as a Congressional hearing. Bluetooth – What is Bluetooth? What is transmission media?