How does L3 Switch deal with broadcast communication such as ARP,DHCP or Broadcast storm? Is it the same that router deal with such as blocking a broadcast communication or ip address ""?

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    May 20, 2015 at 19:33
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1 Answer 1


By default, a layer 3 switch will treat broadcasts like a layer 2 switch at the layer 2 level. IOW, it will forward the broadcast throughout the VLAN. By default, it will treat broadcasts like a router at the layer 3 level. IOW, it will not forward broadcasts across layer 3 boundaries.

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