![]() For this, it maintains a table containing the physical(MAC) addresses of all the devices in the network. Also, it can check the destination MAC address of a frame and decides the port from which the frame should be sent out. It means that it can discard the faulty data frames and will allow only the errorless data frames in the network. It has two collision domains, so there is still a chance of collision and traffic in the data transmission channel. It uses the incoming port to receive the data frames and outgoing port to send the data frames to other devices. It has two types of port - incoming and outgoing. It is mainly used to segment a network to allow a large network size. In the physical layer, the bridge acts as a Repeater which regenerates the weak signals, while in the data-link layer, it checks the MAC(Media Access Control) address of the data frames for its transmission.Ī bridge connects the devices which are present in the same network. It interprets data in the form of data frames. ![]() It can be used in a limited network size only.īroadcasting induces unnecessary traffic on the channel.Ī bridge is a layer-2 network connecting device, i.e., it works on the physical and data-link layer of the OSI model. It is less secure, as it broadcasts the data packets. It uses a half-duplex mode of communication. It can connect devices of the same network only. We can just plug and play it.įollowing are the disadvantages of using a Hub: It does not require any special system administration configuration. In other words, it just forwards the data as it is.įollowing are the advantages of using a Hub: It only provides communication between the networking devices and does not amplify the transmission signals. Thus, it can analyze the data packets and can amplify the transmission signals, if needed.Ī passive hub does not need any power supply to operate. It requires a power supply and can work as a repeater. There are mainly two types of Hub, they are:Īn Active hub is also known as Concentrator. Also, a hub can only connect the devices in the same network with the same data rates and format only. If the network size is increased, the speed of the network will slow down. A hub is connected in limited network size. It has only one collision domain, so there are more chances of collision and traffic on the channel. It shares the bandwidth of its channel with the connecting devices. Broadcasting also leads to unnecessary data traffic on the channel.Ī Hub uses a half-duplex mode of communication. Due to this, there are various security issues in the hub. In other words, a hub broadcasts the incoming data packets in the network. ![]() When a data packet arrives at one of the ports of a Hub, it simply copies the data to every port. It only knows that a device is connected to one of its ports. It does not maintain any address table for connected devices. A Hub is mainly used to create a network and connect devices on the same network only.Ī Hub is not an intelligent device, it forwards the incoming messages to other devices without checking for any errors or processing it. Since it works in the physical layer, it mainly deals with the data in the form of bits or electrical signals. It is also known as aĪ Hub is a layer-1 device and operates only in the physical network of the OSI Model. ![]() In Star/hierarchical topology, a Repeater is called Hub. Hub is a very simple network connecting device. Now let us learn about these network connecting devices one-by-one. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |