Title : What Is A Network Switch
link : What Is A Network Switch
What Is A Network Switch
to in contrast, switches perform some amount of traffic isolation so that the entire lan doesn't become one broadcast medium. but instead, we can partition the lan into separate broadcast domains or collision domains. now a
What Is A Network Switch, switch might break the subnet into multiple lan segments. typically a frame that is bound for a host in the same part or segment of the lan is not forwarded to other segments. so, for example if we had a
network with three hubs, all connected by a switch, then each of these would be its own broadcast domain. and if a host here wanted to send a frame to another destination in the same segment, well that frame would be broadcast within that domain. but the switch would recognize that the destination was in the same segment. and would not for the packet on output ports, destined for other lan segments where the destination was not. now enforcing this kind of isolation,
requires constructing some kind of switch table, or state at the switch, which maps destination mac addresses to output ports.
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