Difference between revisions of "Network switch"
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| − | A '''Network Switch''' is a telecommunication device which facilitates communication within networks. It is classified as a layer-two device on the [[OSI model]]. It isolates collision domains, and uses MAC addresses to communicate. | + | A '''Network Switch''' is a telecommunication device which facilitates communication within networks. It is classified as a layer-two device on the [[OSI model]]. It isolates collision domains (each port is a separate collision domain), and uses MAC addresses to communicate. However, broadcasts are not isolated by standard switches, meaning they offer less network security than [[Router (computing)|routers]]. Some switches can be configured aftermarket with VLANs to serve this function, but it is not a default function. (This requires a layer 3 switch to enable the VLANs to communicate.) |
[[Category:Networking]] | [[Category:Networking]] | ||
Latest revision as of 20:33, April 10, 2017
A Network Switch is a telecommunication device which facilitates communication within networks. It is classified as a layer-two device on the OSI model. It isolates collision domains (each port is a separate collision domain), and uses MAC addresses to communicate. However, broadcasts are not isolated by standard switches, meaning they offer less network security than routers. Some switches can be configured aftermarket with VLANs to serve this function, but it is not a default function. (This requires a layer 3 switch to enable the VLANs to communicate.)