networking - ARP & layer 3 switch -


the following based on understanding of network, if there's wrong, please point out.

considering following scenario. host (sender) send ip packet:

  1. sender fills in destination ip address
  2. sender fills in destination mac address (may use arp)
  3. switch forwards packet based on mac address.

here's question:

can rid of arp, if using layer 3 switch? because layer 3 switch forwarding packets based on ip address.

switches don't use arp in meaning don't send out out arps utilise functions when pc sends out arp.

switches ip interfaces's use arp in same way other device uses arp communicate. can on l2 switch management interface, or layer 3 switch ip vlan interfaces.

an arp broadcasted, , switches flood out ports. once device arp intended reach see's arp, replies directly device sent arp it's mac address. original device sends traffic (which caused send arp) directly mac of responder. it's @ point switch uses it's mac table forward frames out correct port.

source techexams.


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