Switch-Vlans - Switches, VLans Ethernet Switches An...

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Switches, VLans Ethernet Switches An Ether-switch has a buffer area for each port. In this buffer, a number of frames are stored. The bits are not repeated on all ports; instead all of the bits of the frame are received and stored. Whenever the entire frame is received, the switch will make a decision as to which port to forward it to. Once it discovers the port to send it to, it will only to that port. While Ethernet hub is a layer 1 or physical layer device, Ether-switch is a layer 2 or Data Link device because it deals with frames. Its function is frame-switching. Inside each switch there is a table known as the “Switching Table.” This table contains the MAC addresses and the Port Number each MAC address resides. It works similar to ARP cache. These entries are temporary and kept there for a certain time. The general amount of time the cache is kept is in hours. Multiple conversations can be carried on an Ethernet switch, which was not possible on a hub. This provides significant performance improvement over hubs (Order(s) of magnitude. An order
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Switch-Vlans - Switches, VLans Ethernet Switches An...

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