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I can't ping the lower pc from the server on each switch. The upper pc on each switch can be pinged from the server but the other one won't ping. What's wrong here?
if i use L3 switch, do i still need to include a router? and all of my PCs and servers are on the same subnet (255.255.255.0) so what do you mean by my lower pc is on other subnet? and what does the default gateway have to do with it?
