how can a network switch block unnecessary ip packets' traffic?

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how can a network switch block unnecessary ip packets' traffic?

i know that a network switch can filter unnecessary IP TRAFFIC , that is, it doesn't send IP PACKETS to the computer which hasn't the IP ADDRESS of the destination. but you know, an ethernet switch works at physical layer and data link layer, not NETWORK LAYER. so i suppose filtering unnecessary IP TRAFFIC is a router's capability. how can an ethernet switch achieve this? what's its principle?
GREATLY APPRECIATE YOUR EXPLANATION.

2006-10-16 03:11:15 · 2 answers · asked by samurai 1 in Computers & Internet ➔ Security

no crap, please!

2006-10-17 04:49:14 · update #1

did i say something wrong? if yes, please point it out for me, thank you. sincerely.

2006-10-18 22:13:19 · update #2

2 answers

Switches don't do this.

See the answer from Dr. House!!!

2006-10-16 03:14:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋

Youre absolutely right! Buy a router!

2006-10-16 03:12:59 · answer #2 · answered by Anonymous · 1⤊ 0⤋