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I'm pretty new to networking and I've just got started into using cisco packet tracer (a network simulator program).

My topology is basically a router, two switches connected to this router and per switch there are two computers.

one switch is connected on fastethernet0/0 ( the other is connected on fastethernet0/1 (

Now if I use one of the computers on one switch to ping to one on the other switch it fails... however, computers on the same switch can ping each other and the router...

Like I said... I'm pretty new and I might be missing something here.

Can anyone help me figure this out?

Thanks in advance! Dempsey

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The IP addresses of the two computers, along with the netmasks will be helpful. The computer's default routes as well. Thanks... – Nevin Williams May 14 '13 at 19:22
You have to configure your computers with respective default gateway, which is router's IP address. For example, the PC connected to the switch which is on fa0/0 uses as – Ashtray Nov 26 '13 at 9:11

Just make sure both of your switch and router are in the same gateway. Either or

After changed to the same gateway, then it should work on the ping.

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