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added a switch to my router/network, cant see other pc's anymore (pic)

post #1 of 27
Thread Starter 
so before i had 2 pc's on my router and when i share folders in w7, they can see each other's

but now that i added a switch, they seem to be on seperate networks.. i added a wireless router too, and now i have 3 separate networks apparently.. i.e. the pc's connected to the wireless router can see each other, but not the ones on the switch, and vice versa

hope this makes sense, anyone know what's wrong? they are all connected to the internet.. just cant see each other in my home network


Edited by koven - 3/10/11 at 1:02pm
post #2 of 27
that is because you have it setup wrong. the way you want it setup is this.

Modem -> wifi router -> switch -> rest of the computers. this way the switch will act as an extension of the routers network.

also here is a picture.
post #3 of 27
from what i can see, you need to add ACL's to enable the devices to communicate with each other. In addition you may need to add routes so the wired and wireless can communicate.

Personally I would have set it up slightly different, but you may need it set like you have if you want the device not connected to the switch to be DMZ'ed off.

PC
v
Easiest would have been modem>wireless router>switch>pc
^
wireless PC

Yeah i know i didn't pull out Visio. Regardless you would need the wireless router to be dd-wrt so you have some of the advanced routing options.

EDIT
Like Thrasherht did in his diagram.
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post #4 of 27
Quote:
Originally Posted by bratas View Post
from what i can see, you need to add ACL's to enable the devices to communicate with each other. In addition you may need to add routes so the wired and wireless can communicate.

Personally I would have set it up slightly different, but you may need it set like you have if you want the device not connected to the switch to be DMZ'ed off.

PC
v
Easiest would have been modem>wireless router>switch>pc
^
wireless PC

Yeah i know i didn't pull out Visio. Regardless you would need the wireless router to be dd-wrt so you have some of the advanced routing options.

EDIT
Like Thrasherht did in his diagram.
what you put is a terrible way to setup network. the idea is you want a single DHCP server hosting all of your computers, so in turn you don't want to use the one from the modem if it has one, so all of your network sits behind the router. that has the DHCP server, the switch just expands the network to allow more ports, and all the computer connected to it and the wireless WILL see eachother. I promise.

I am a networking major, on top of I have tested said method on a network. switches only router data, routers on the other had actually split up the network, so you have a separate network behind and in front of the WAN port.
post #5 of 27
Quote:
Originally Posted by thrasherht View Post
what you put is a terrible way to setup network. the idea is you want a single DHCP server hosting all of your computers, so in turn you don't want to use the one from the modem if it has one, so all of your network sits behind the router. that has the DHCP server, the switch just expands the network to allow more ports, and all the computer connected to it and the wireless WILL see eachother. I promise.

I am a networking major, on top of I have tested said method on a network. switches only router data, routers on the other had actually split up the network, so you have a separate network behind and in front of the WAN port.
*** are you talking about, it's literally the exact same design as you put up. I just didn't have the time to open a diagram.
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post #6 of 27
here does this help for the ones that can't read, a nice pretty little picture.
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post #7 of 27
Hey, Bratas..



Seriously dude, that's just sloppy..
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post #8 of 27
yeah i know, i had very limited time to get it all set and pretty.
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post #9 of 27
Thread Starter 
Quote:
Originally Posted by thrasherht View Post
that is because you have it setup wrong. the way you want it setup is this.

Modem -> wifi router -> switch -> rest of the computers. this way the switch will act as an extension of the routers network.

also here is a picture.
that's exactly how i have it setup tho

ignore my wifi router for a sec, and consider that my modem/router is an all-in-one unit

if i connect 2 pc's to the all-in-one, they can see each other

when i add a switch in between one of the pc's, they cant see each other anymore
post #10 of 27
you stated you have 3 separate networks. How are they separated? where are they separated? It could also be a VLAN issue as the switch you put in is probably a home grade Layer 2 device, so it can't determine port 1 need to be in VLAN 1 and port 2 needs to be in VLAN 2. It assigns all ports to VLAN 1 and forwards the traffic to the router. If everything is connected in the router, the router will see that hey this needs to go to VLAN 2 or VLAN 3.

So to sum it up, does the switch support 802.1q tagging?

*EDIT*
try moving all pc's that hang off the switch to the same subnet. example
192.168.0.0 255.255.255.0

That should fix your issue.
Edited by bratas - 3/10/11 at 3:25pm
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